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LazStats: Refactor tTestUnit.
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7845 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
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@ -1,7 +1,7 @@
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inherited TtestForm: TTtestForm
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Left = 947
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Left = 740
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Height = 546
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Top = 176
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Top = 175
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Width = 889
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HelpType = htKeyword
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HelpKeyword = 'html/tTests.htm'
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@ -40,7 +40,7 @@ inherited TtestForm: TTtestForm
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end
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object Label1: TLabel[5]
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AnchorSideLeft.Control = ParamsPanel
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AnchorSideTop.Control = CInterval
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AnchorSideTop.Control = CIntervalEdit
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AnchorSideTop.Side = asrCenter
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Left = 0
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Height = 15
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@ -49,7 +49,7 @@ inherited TtestForm: TTtestForm
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Caption = 'Percent Confidence Interval:'
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ParentColor = False
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end
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object CInterval: TEdit[6]
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object CIntervalEdit: TEdit[6]
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AnchorSideLeft.Control = Label1
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = TailCombo
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@ -76,12 +76,12 @@ inherited TtestForm: TTtestForm
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Height = 335
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Top = 154
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Width = 368
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PageIndex = 0
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PageIndex = 1
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Anchors = [akTop, akLeft, akRight, akBottom]
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TabOrder = 4
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object Page1: TPage
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object Mean1Label: TLabel
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AnchorSideLeft.Control = Mean1
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AnchorSideLeft.Control = Mean1Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Page1
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Left = 83
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@ -93,7 +93,7 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object Mean2Label: TLabel
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AnchorSideTop.Control = Mean1
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AnchorSideTop.Control = Mean1Edit
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Mean1Label
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AnchorSideRight.Side = asrBottom
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@ -107,7 +107,7 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object SD1Label: TLabel
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AnchorSideLeft.Control = SD1
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AnchorSideLeft.Control = SD1Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Mean1Label
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Left = 157
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@ -119,7 +119,7 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object SD2Label: TLabel
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AnchorSideLeft.Control = SD2
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AnchorSideLeft.Control = SD2Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Mean2Label
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Left = 157
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@ -131,7 +131,7 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object SampSize1Label: TLabel
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AnchorSideLeft.Control = N1
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AnchorSideLeft.Control = N1Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Mean1Label
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Left = 231
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@ -143,7 +143,7 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object SampSize2Label: TLabel
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AnchorSideLeft.Control = N2
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AnchorSideLeft.Control = N2Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Mean2Label
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Left = 231
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@ -155,9 +155,9 @@ inherited TtestForm: TTtestForm
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ParentColor = False
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end
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object Cor12Label: TLabel
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AnchorSideLeft.Control = Cor12
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AnchorSideLeft.Control = Cor12Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = SD2
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AnchorSideTop.Control = SD2Edit
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AnchorSideTop.Side = asrBottom
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Left = 111
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Height = 15
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@ -168,11 +168,11 @@ inherited TtestForm: TTtestForm
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Caption = 'Correlation Between Scores:'
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ParentColor = False
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end
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object Mean1: TEdit
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object Mean1Edit: TEdit
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = Mean1Label
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = SD1
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AnchorSideRight.Control = SD1Edit
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Left = 77
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Height = 23
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Top = 49
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@ -183,13 +183,13 @@ inherited TtestForm: TTtestForm
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BorderSpacing.Top = 2
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BorderSpacing.Right = 32
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TabOrder = 0
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Text = 'Mean1'
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Text = 'Mean1Edit'
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end
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object Mean2: TEdit
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AnchorSideLeft.Control = Mean1
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object Mean2Edit: TEdit
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AnchorSideLeft.Control = Mean1Edit
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AnchorSideTop.Control = Mean2Label
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Mean1
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AnchorSideRight.Control = Mean1Edit
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AnchorSideRight.Side = asrBottom
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Left = 77
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Height = 23
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@ -199,12 +199,12 @@ inherited TtestForm: TTtestForm
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Anchors = [akTop, akRight]
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BorderSpacing.Top = 2
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TabOrder = 1
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Text = 'Mean2'
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Text = 'Mean2Edit'
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end
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object SD1: TEdit
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object SD1Edit: TEdit
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AnchorSideLeft.Control = Page1
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Mean1
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AnchorSideTop.Control = Mean1Edit
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Left = 159
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Height = 23
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Top = 49
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@ -212,12 +212,12 @@ inherited TtestForm: TTtestForm
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Alignment = taRightJustify
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BorderSpacing.Left = 6
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TabOrder = 2
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Text = 'SD1'
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Text = 'SD1Edit'
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end
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object SD2: TEdit
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AnchorSideLeft.Control = SD1
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AnchorSideTop.Control = Mean2
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AnchorSideRight.Control = SD1
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object SD2Edit: TEdit
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AnchorSideLeft.Control = SD1Edit
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AnchorSideTop.Control = Mean2Edit
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AnchorSideRight.Control = SD1Edit
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AnchorSideRight.Side = asrBottom
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Left = 159
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Height = 23
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@ -226,12 +226,12 @@ inherited TtestForm: TTtestForm
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Alignment = taRightJustify
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Anchors = [akTop, akRight]
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TabOrder = 3
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Text = 'SD2'
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Text = 'SD2Edit'
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end
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object N1: TEdit
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AnchorSideLeft.Control = SD1
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object N1Edit: TEdit
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AnchorSideLeft.Control = SD1Edit
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = Mean1
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AnchorSideTop.Control = Mean1Edit
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Left = 241
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Height = 23
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Top = 49
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@ -239,12 +239,12 @@ inherited TtestForm: TTtestForm
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Alignment = taRightJustify
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BorderSpacing.Left = 32
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TabOrder = 4
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Text = 'N1'
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Text = 'N1Edit'
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end
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object N2: TEdit
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AnchorSideLeft.Control = N1
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AnchorSideTop.Control = Mean2
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AnchorSideRight.Control = N1
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object N2Edit: TEdit
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AnchorSideLeft.Control = N1Edit
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AnchorSideTop.Control = Mean2Edit
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AnchorSideRight.Control = N1Edit
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AnchorSideRight.Side = asrBottom
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Left = 241
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Height = 23
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@ -253,10 +253,10 @@ inherited TtestForm: TTtestForm
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Alignment = taRightJustify
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Anchors = [akTop, akRight]
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TabOrder = 5
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Text = 'N2'
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Text = 'N2Edit'
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end
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object Cor12: TEdit
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AnchorSideLeft.Control = SD1
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object Cor12Edit: TEdit
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AnchorSideLeft.Control = SD1Edit
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AnchorSideLeft.Side = asrCenter
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AnchorSideTop.Control = Cor12Label
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AnchorSideTop.Side = asrBottom
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@ -267,7 +267,7 @@ inherited TtestForm: TTtestForm
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Alignment = taRightJustify
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BorderSpacing.Top = 2
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TabOrder = 6
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Text = 'Cor12'
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Text = 'Cor12Edit'
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end
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end
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object Page2: TPage
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@ -277,8 +277,8 @@ inherited TtestForm: TTtestForm
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Left = 0
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Height = 15
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Top = 0
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Width = 83
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Caption = 'Select Variables:'
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Width = 97
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Caption = 'Available Variables'
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ParentColor = False
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end
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object VarList: TListBox
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@ -307,12 +307,12 @@ inherited TtestForm: TTtestForm
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Left = 203
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Height = 15
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Top = 25
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Width = 62
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Width = 59
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Alignment = taRightJustify
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Anchors = [akLeft, akBottom]
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 2
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Caption = '1st Variable:'
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Caption = '1st Variable'
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ParentColor = False
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end
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object Var2Label: TLabel
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@ -321,11 +321,11 @@ inherited TtestForm: TTtestForm
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Left = 203
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Height = 15
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Top = 101
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Width = 67
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Width = 64
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Alignment = taRightJustify
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Anchors = [akLeft, akBottom]
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BorderSpacing.Right = 8
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Caption = '2nd Variable:'
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Caption = '2nd Variable'
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ParentColor = False
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end
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object GrpLabel: TLabel
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@ -335,12 +335,12 @@ inherited TtestForm: TTtestForm
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Left = 203
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Height = 15
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Top = 177
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Width = 67
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Width = 77
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Alignment = taRightJustify
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Anchors = [akLeft, akBottom]
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 2
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Caption = 'Group Code:'
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Caption = 'Group Variable'
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ParentColor = False
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end
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object Bevel5: TBevel
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@ -651,7 +651,7 @@ inherited TtestForm: TTtestForm
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end
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object Bevel3: TBevel[10]
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AnchorSideLeft.Control = ParamsPanel
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AnchorSideTop.Control = CInterval
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AnchorSideTop.Control = CIntervalEdit
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = ParamsPanel
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AnchorSideRight.Side = asrBottom
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@ -31,8 +31,8 @@ type
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Page1: TPage;
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Page2: TPage;
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Cor12Label: TLabel;
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Cor12: TEdit;
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CInterval: TEdit;
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Cor12Edit: TEdit;
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CIntervalEdit: TEdit;
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GrpEdit: TEdit;
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Label1: TLabel;
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Var1In: TBitBtn;
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@ -44,16 +44,16 @@ type
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Var2Label: TLabel;
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VarList: TListBox;
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SelVarLabel: TLabel;
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N2: TEdit;
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N1: TEdit;
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N2Edit: TEdit;
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N1Edit: TEdit;
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SampSize2Label: TLabel;
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SampSize1Label: TLabel;
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SD2: TEdit;
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SD1: TEdit;
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SD2Edit: TEdit;
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SD1Edit: TEdit;
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SD2Label: TLabel;
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SD1Label: TLabel;
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Mean2: TEdit;
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Mean1: TEdit;
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Mean2Edit: TEdit;
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Mean1Edit: TEdit;
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Mean2Label: TLabel;
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Mean1Label: TLabel;
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DataEntryGroup: TRadioGroup;
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@ -75,7 +75,13 @@ type
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private
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independent: boolean;
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griddata: boolean;
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function Eval_DependentGridData(out AMean1, AMean2, AVariance1, AVariance2,
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AStdDev1, AStdDev2, ACovar12, r12: Double; out ANumCases1, ANumCases2: Integer): Boolean;
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function Eval_IndependentGridData(out AMean1, AMean2, AVariance1, AVariance2,
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AStdDev1, AStdDev2: Double; out ANumCases1, ANumCases2: Integer;
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out ALabel1Str, ALabel2Str: String): Boolean;
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protected
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procedure AdjustConstraints; override;
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procedure Compute; override;
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@ -97,7 +103,7 @@ implementation
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uses
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Math,
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MathUnit, GridProcs;
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Utils, MathUnit, MatrixUnit, GridProcs;
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{ TTtestForm }
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@ -105,7 +111,7 @@ uses
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constructor TTtestForm.Create(AOwner: TComponent);
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begin
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inherited;
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CInterval.Text := FormatFloat('0.0', DEFAULT_CONFIDENCE_LEVEL_PERCENT);
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CIntervalEdit.Text := FormatFloat('0.0', DEFAULT_CONFIDENCE_LEVEL_PERCENT);
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end;
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@ -119,7 +125,7 @@ begin
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);
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ParamsPanel.Constraints.MinHeight := DataEntryGroup.Height +
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TailCombo.BorderSpacing.Top + TailCombo.Height +
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CInterval.BorderSpacing.Top + CInterval.Height + CInterval.BorderSpacing.Bottom +
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CIntervalEdit.BorderSpacing.Top + CIntervalEdit.Height + CIntervalEdit.BorderSpacing.Bottom +
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Bevel3.Height + Bevel3.BorderSpacing.Bottom +
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GrpIn.Top + GroupCodeGroup.Height +
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ButtonBevel.Height + CloseBtn.BorderSpacing.Top + CloseBtn.Height;
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@ -128,154 +134,58 @@ end;
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procedure TTtestForm.Compute;
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var
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M1, M2, Dif, stddev1, stddev2, r12, stderr1, stderr2: double;
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mean1, mean2, Dif, stddev1, stddev2, r12, stderr1, stderr2: double;
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tequal, tunequal, cov12, lowci, hici, F, Fp, df1, df2: double;
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tprobability, value1, value2: double;
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variance1, variance2, pooled, sedif, df, ConfInt, tconfint: double;
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i, nCases1, nCases2: integer;
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group, min, max: integer;
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minf, maxf: Double;
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ColNoSelected: IntDyneVec = nil;
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label1Str, label2Str: string;
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lReport: TStrings;
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begin
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SetLength(ColNoSelected,NoVariables);
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ncases1 := 0;
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ncases2 := 0;
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variance1 := 0.0;
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variance2 := 0.0;
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M1 := 0.0;
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M2 := 0.0;
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Dif := 0.0;
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r12 := 0.0;
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stddev1 := 0.0;
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stddev2 := 0.0;
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ConfInt := (100.0 - StrToFloat(CInterval.Text)) / 2.0 ;
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ConfInt := (100.0 - StrToFloat(CIntervalEdit.Text)) / 2.0 ;
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ConfInt := (100.0 - ConfInt) / 100.0; // one tail
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if independent then
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Var2Edit.Text := GrpEdit.Text;
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// data read from grid
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if griddata then
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begin
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SetLength(ColNoSelected, 2);
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ColNoSelected[0] := GetVariableIndex(OS3MainFrm.DataGrid, Var1Edit.Text);
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ColNoSelected[1] := GetVariableIndex(OS3MainFrm.DataGrid, Var2Edit.Text);
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ncases1 := 0;
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ncases2 := 0;
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M1 := 0.0;
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M2 := 0.0;
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variance1 := 0.0;
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variance2 := 0.0;
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r12 := 0.0;
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if not independent then // correlated data
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begin
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for i := 1 to NoCases do
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begin
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if not GoodRecord(OS3MainFrm.DataGrid, i, ColNoSelected) then continue;
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ncases1 := ncases1 + 1;
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value1 := StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[ColNoSelected[0], i]));
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value2 := StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[ColNoSelected[1], i]));
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M1 := M1 + value1;
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M2 := M2 + value2;
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variance1 := variance1 + value1 * value1;
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variance2 := variance2 + value2 * value2;
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r12 := r12 + value1 * value2;
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end;
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ncases2 := ncases1;
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variance1 := variance1 - (M1 * M1 / ncases1);
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variance1 := variance1 / (ncases1 - 1);
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stddev1 := sqrt(variance1);
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variance2 := variance2 - (M2 * M2 / ncases2);
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variance2 := variance2 / (ncases2 - 1);
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stddev2 := sqrt(variance2);
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r12 := r12 - (M1 * M2 / ncases1);
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r12 := r12 / (ncases1 - 1);
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cov12 := r12;
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r12 := r12 / (stddev1 * stddev2);
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M1 := M1 / ncases1;
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M2 := M2 / ncases2;
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Dif := M1 - M2;
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end; //if not independent
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// Read and analyze data from grid
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if independent then
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begin
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if GroupCodeChk.Checked then
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begin
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min := StrToInt(Grp1CodeEdit.Text);
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max := StrToInt(Grp2CodeEdit.Text);
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end else
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begin
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min := MaxInt;
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max := min;
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end;
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for i := 1 to NoCases do
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begin
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if not GoodRecord(OS3MainFrm.DataGrid, i, ColNoSelected) then continue;
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group := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[ColNoSelected[1], i])));
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if not GroupCodeChk.Checked then
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begin
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if group < min then min := group;
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if group > max then max := group;
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end;
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end;
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for i := 1 to NoCases do
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begin
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if not GoodRecord(OS3MainFrm.DataGrid, i, ColNoSelected) then continue;
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value1 := StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[ColNoSelected[0], i]));
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value2 := StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[ColNoSelected[1], i]));
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group := round(value2);
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if group = min then
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begin
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M1 := M1 + value1;
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variance1 := variance1 + (value1 * value1);
|
||||
ncases1 := ncases1 + 1;
|
||||
end else if group = max then
|
||||
begin
|
||||
M2 := M2 + value1;
|
||||
variance2 := variance2 + (value1 * value1);
|
||||
ncases2 := Ncases2 + 1;
|
||||
end;
|
||||
end; // next case
|
||||
|
||||
variance1 := variance1 - ((M1 * M1) / ncases1);
|
||||
variance1 := variance1 / (ncases1 - 1);
|
||||
stddev1 := sqrt(variance1);
|
||||
variance2 := variance2 - ((M2 * M2) / ncases2);
|
||||
variance2 := variance2 / (ncases2 - 1);
|
||||
stddev2 := sqrt(variance2);
|
||||
M1 := M1 / ncases1;
|
||||
M2 := M2 / ncases2;
|
||||
Dif := M1 - M2;
|
||||
Label1Str := format('Group %d',[min]);
|
||||
Label2Str := format('Group %d',[max]);
|
||||
end; // if independent data
|
||||
end; // if reading grid data
|
||||
|
||||
if not griddata then // data read from form
|
||||
if not Eval_IndependentGridData(
|
||||
mean1, mean2, variance1, variance2, stddev1, stddev2,
|
||||
nCases1, nCases2, Label1Str, Label2Str)
|
||||
then
|
||||
exit;
|
||||
end else
|
||||
begin
|
||||
if not Eval_DependentGridData(
|
||||
mean1, mean2, variance1, variance2, stddev1, stddev2,
|
||||
cov12, r12, nCases1, nCases2)
|
||||
then
|
||||
exit;
|
||||
end;
|
||||
end else
|
||||
begin
|
||||
M1 := StrToFloat(Mean1.Text);
|
||||
M2 := StrToFloat(Mean2.Text);
|
||||
stddev1 := StrToFloat(SD1.Text);
|
||||
stddev2 := StrToFloat(SD2.Text);
|
||||
ncases1 := round(StrToFloat(N1.Text));
|
||||
ncases2 := round(StrToFloat(N2.Text));
|
||||
// Read data from form
|
||||
mean1 := StrToFloat(mean1Edit.Text);
|
||||
mean2 := StrToFloat(mean2Edit.Text);
|
||||
stddev1 := StrToFloat(SD1Edit.Text);
|
||||
stddev2 := StrToFloat(SD2Edit.Text);
|
||||
ncases1 := round(StrToFloat(N1Edit.Text));
|
||||
ncases2 := round(StrToFloat(N2Edit.Text));
|
||||
variance1 := stddev1 * stddev1;
|
||||
variance2 := stddev2 * stddev2;
|
||||
Label1Str := 'Group 1';
|
||||
Label2Str := 'Group 2';
|
||||
Dif := M1 - M2;
|
||||
if not independent then
|
||||
begin
|
||||
r12 := StrToFloat(Cor12.Text);
|
||||
r12 := StrToFloat(Cor12Edit.Text);
|
||||
cov12 := r12 * stddev1 * stddev2;
|
||||
end;
|
||||
end;
|
||||
dif := mean1 - mean2;
|
||||
|
||||
// Initialize output form
|
||||
lReport := TStringList.Create;
|
||||
@ -289,8 +199,8 @@ begin
|
||||
stderr1 := sqrt(variance1 / ncases1);
|
||||
Stderr2 := sqrt(variance2 / ncases2);
|
||||
lReport.Add('Variable Mean Variance Std.Dev. S.E.Mean N');
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label1Str, M1, variance1, stddev1, stderr1, ncases1]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label2Str, M2, variance2, stddev2, stderr2, ncases2]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label1Str, mean1, variance1, stddev1, stderr1, ncases1]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label2Str, mean2, variance2, stddev2, stderr2, ncases2]);
|
||||
lReport.Add('');
|
||||
|
||||
pooled := ((ncases1-1) * variance1) + ((ncases2-1) * variance2);
|
||||
@ -349,8 +259,8 @@ begin
|
||||
stderr1 := sqrt(variance1 / ncases1);
|
||||
Stderr2 := sqrt(variance2 / ncases2);
|
||||
lReport.Add('Variable Mean Variance Std.Dev. S.E.Mean N');
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label1Str, M1, variance1, stddev1, stderr1, ncases1]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label2Str,M2, variance2, stddev2, stderr2, ncases2]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label1Str, mean1, variance1, stddev1, stderr1, ncases1]);
|
||||
lReport.Add('%-10s%8.2f %8.2f %8.2f %8.2f %d', [Label2Str, mean2, variance2, stddev2, stderr2, ncases2]);
|
||||
lReport.Add('');
|
||||
sedif := variance1 + variance2 - (2.0 * cov12);
|
||||
sedif := sqrt(sedif / ncases1);
|
||||
@ -399,6 +309,9 @@ begin
|
||||
Var2Edit.Visible := false;
|
||||
end;
|
||||
|
||||
GroupCodeChk.Visible := independent;
|
||||
GroupCodeGroup.Visible := independent;
|
||||
|
||||
Var2Label.Visible := Var2Edit.Visible;
|
||||
Var2In.Visible := Var2Edit.Visible;
|
||||
Var2Out.Visible := Var2Edit.Visible;
|
||||
@ -427,11 +340,109 @@ begin
|
||||
Var2In.Visible := not independent;
|
||||
Var2Out.Visible := not independent;
|
||||
|
||||
Cor12.Visible := not independent;
|
||||
Cor12Edit.Visible := not independent;
|
||||
Cor12Label.Visible := not independent;
|
||||
end;
|
||||
|
||||
|
||||
function TtTestForm.Eval_DependentGridData(out AMean1, AMean2,
|
||||
AVariance1, AVariance2, AStdDev1, AStdDev2, ACovar12, r12: Double;
|
||||
out ANumCases1, ANumCases2: Integer): Boolean;
|
||||
var
|
||||
colNoSelected: IntDyneVec = nil;
|
||||
values1: DblDyneVec = nil;
|
||||
values2: DblDyneVec = nil;
|
||||
begin
|
||||
SetLength(colNoSelected, 2);
|
||||
colNoSelected[0] := GetVariableIndex(OS3MainFrm.DataGrid, Var1Edit.Text);
|
||||
colNoSelected[1] := GetVariableIndex(OS3MainFrm.DataGrid, Var2Edit.Text);
|
||||
|
||||
values1 := CollectVecValues(OS3MainFrm.DataGrid, colNoSelected[0], colNoSelected);
|
||||
values2 := CollectVecValues(OS3MainFrm.DataGrid, colNoSelected[1], colNoSelected);
|
||||
|
||||
ANumCases1 := Length(values1);
|
||||
ANumCases2 := Length(values2);
|
||||
|
||||
if ANumCases1 <> ANumCases2 then
|
||||
begin
|
||||
ErrorMsg('Both variables must have the same count of cases.');
|
||||
Result := false;
|
||||
exit;
|
||||
end;
|
||||
|
||||
if ANumCases1 < 2 then
|
||||
begin
|
||||
ErrorMsg('There must be at least two cases.');
|
||||
Result := false;
|
||||
exit;
|
||||
end;
|
||||
|
||||
VecMeanVarStdDev(values1, AMean1, AVariance1, AStdDev1);
|
||||
VecMeanVarStdDev(values2, AMean2, AVariance2, AStdDev2);
|
||||
|
||||
ACovar12 := (values1 - AMean1) * (values2 - AMean2) / (ANumCases1-1);
|
||||
r12 := ACovar12 / (AStdDev1 * AStdDev2);
|
||||
|
||||
Result := true;
|
||||
end;
|
||||
|
||||
|
||||
function TtTestForm.Eval_IndependentGridData(out AMean1, AMean2,
|
||||
AVariance1, AVariance2, AStdDev1, AStdDev2: Double;
|
||||
out ANumCases1, ANumCases2: Integer; out ALabel1Str, ALabel2Str: String): Boolean;
|
||||
var
|
||||
colNoSelected: IntDyneVec = nil;
|
||||
values1: DblDyneVec = nil;
|
||||
values2: DblDyneVec = nil;
|
||||
grp1, grp2: Integer;
|
||||
minf, maxf: Double;
|
||||
|
||||
begin
|
||||
SetLength(colNoSelected, 2);
|
||||
colNoSelected[0] := GetVariableIndex(OS3MainFrm.DataGrid, Var1Edit.Text);
|
||||
colNoSelected[1] := GetVariableIndex(OS3MainFrm.DataGrid, GrpEdit.Text);
|
||||
|
||||
if GroupCodeChk.Checked then
|
||||
begin
|
||||
grp1 := StrToInt(Grp1CodeEdit.Text);
|
||||
grp2 := StrToInt(Grp2CodeEdit.Text);
|
||||
end else
|
||||
begin
|
||||
GetMinMax(OS3MainFrm.DataGrid, colNoSelected[1], colNoSelected, minf, maxf);
|
||||
grp1 := round(minf);
|
||||
grp2 := round(maxf);
|
||||
end;
|
||||
|
||||
// Values in group with code given by grp1
|
||||
values1 := CollectFilteredVecValues(OS3MainFrm.DataGrid, colNoSelected[0], colNoSelected[1], grp1, colNoSelected);
|
||||
// Values in group with code given by grp2
|
||||
values2 := CollectFilteredVecValues(OS3MainFrm.DataGrid, colNoSelected[0], colNoSelected[1], grp2, colNoSelected);
|
||||
|
||||
ANumCases1 := Length(values1);
|
||||
ANumCases2 := Length(values2);
|
||||
if ANumCases1 <> ANumCases2 then
|
||||
begin
|
||||
ErrorMsg('Both variables must have the same count of cases.');
|
||||
Result := false;
|
||||
exit;
|
||||
end;
|
||||
|
||||
if ANumCases1 < 2 then begin
|
||||
ErrorMsg('There must be at least 2 cases.');
|
||||
Result := false;
|
||||
exit;
|
||||
end;
|
||||
|
||||
VecMeanVarStdDev(values1, AMean1, AVariance1, AStdDev1);
|
||||
VecMeanVarStdDev(values2, AMean2, AVariance2, AStdDev2);
|
||||
|
||||
ALabel1Str := format('Group %d', [grp1]);
|
||||
ALabel2Str := format('Group %d', [grp2]);
|
||||
|
||||
Result := true;
|
||||
end;
|
||||
|
||||
|
||||
procedure TTtestForm.GroupCodeChkChange(Sender: TObject);
|
||||
begin
|
||||
Grp1CodeEdit.Enabled := GroupCodeChk.Checked;
|
||||
@ -482,13 +493,13 @@ begin
|
||||
VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
|
||||
Var1Edit.Clear;
|
||||
Var2Edit.Clear;
|
||||
Mean1.Clear;
|
||||
Mean2.Clear;
|
||||
SD1.Clear;
|
||||
SD2.Clear;
|
||||
N1.Clear;
|
||||
N2.Clear;
|
||||
Cor12.Clear;
|
||||
Mean1Edit.Clear;
|
||||
Mean2Edit.Clear;
|
||||
SD1Edit.Clear;
|
||||
SD2Edit.Clear;
|
||||
N1Edit.Clear;
|
||||
N2Edit.Clear;
|
||||
Cor12Edit.Clear;
|
||||
GroupCodeChk.Checked := false;
|
||||
GrpEdit.Clear;
|
||||
Grp1CodeEdit.Clear;
|
||||
@ -524,39 +535,39 @@ begin
|
||||
AMsg := '';
|
||||
if Notebook.PageIndex = 0 then
|
||||
begin
|
||||
if (Mean1.Text = '') or not TryStrToFloat(Mean1.Text, x) then
|
||||
if (Mean1Edit.Text = '') or not TryStrToFloat(Mean1Edit.Text, x) then
|
||||
begin
|
||||
AControl := Mean1;
|
||||
AControl := Mean1Edit;
|
||||
AMsg := 'Invalid input for the mean of sample 1';
|
||||
exit;
|
||||
end;
|
||||
if (SD1.Text = '') or not TryStrToFloat(SD1.Text, x) or (x <= 0) then
|
||||
if (SD1Edit.Text = '') or not TryStrToFloat(SD1Edit.Text, x) or (x <= 0) then
|
||||
begin
|
||||
AControl := SD1;
|
||||
AControl := SD1Edit;
|
||||
AMsg := 'Invald input for the standard deviation of sample 1';
|
||||
exit;
|
||||
end;
|
||||
if (N1.Text = '') or not TryStrToInt(N1.Text, n) or (n <= 0) then
|
||||
if (N1Edit.Text = '') or not TryStrToInt(N1Edit.Text, n) or (n <= 0) then
|
||||
begin
|
||||
AControl := N1;
|
||||
AControl := N1Edit;
|
||||
AMsg := 'Invald input for the size of sample 1';
|
||||
exit;
|
||||
end;
|
||||
if (Mean2.Text = '') or not TryStrToFloat(Mean2.Text, x) then
|
||||
if (Mean2Edit.Text = '') or not TryStrToFloat(Mean2Edit.Text, x) then
|
||||
begin
|
||||
AControl := Mean2;
|
||||
AControl := Mean2Edit;
|
||||
AMsg := 'Invalid input for the mean of sample 2';
|
||||
exit;
|
||||
end;
|
||||
if (SD2.Text = '') or not TryStrToFloat(SD2.Text, x) or (x <= 0) then
|
||||
if (SD2Edit.Text = '') or not TryStrToFloat(SD2Edit.Text, x) or (x <= 0) then
|
||||
begin
|
||||
AControl := SD2;
|
||||
AControl := SD2Edit;
|
||||
AMsg := 'Invald input for the standard deviation of sample 2';
|
||||
exit;
|
||||
end;
|
||||
if (N2.Text = '') or not TryStrToInt(N2.Text, n) or (n <= 0) then
|
||||
if (N2Edit.Text = '') or not TryStrToInt(N2Edit.Text, n) or (n <= 0) then
|
||||
begin
|
||||
AControl := N2;
|
||||
AControl := N2Edit;
|
||||
AMsg := 'Invald input for the size of sample 2';
|
||||
exit;
|
||||
end;
|
||||
@ -581,17 +592,22 @@ begin
|
||||
AMsg := 'Group variable not specified.';
|
||||
exit;
|
||||
end;
|
||||
if Grp1CodeEdit.Visible and ((Grp1CodeEdit.Text = '') or not TryStrToInt(Grp1CodeEdit.Text, n))then
|
||||
if GroupCodeChk.Checked then
|
||||
begin
|
||||
AControl := Grp1CodeEdit;
|
||||
AMsg := 'Code for group 1 missing.';
|
||||
exit;
|
||||
end;
|
||||
if Grp2CodeEdit.Visible and ((Grp2CodeEdit.Text = '') or not TryStrToInt(Grp2CodeEdit.Text, n))then
|
||||
begin
|
||||
AControl := Grp2CodeEdit;
|
||||
AMsg := 'Code for group 2 missing.';
|
||||
exit;
|
||||
if Grp1CodeEdit.Visible and
|
||||
((Grp1CodeEdit.Text = '') or not TryStrToInt(Grp1CodeEdit.Text, n)) then
|
||||
begin
|
||||
AControl := Grp1CodeEdit;
|
||||
AMsg := 'Code for group 1 missing.';
|
||||
exit;
|
||||
end;
|
||||
if Grp2CodeEdit.Visible and
|
||||
((Grp2CodeEdit.Text = '') or not TryStrToInt(Grp2CodeEdit.Text, n))then
|
||||
begin
|
||||
AControl := Grp2CodeEdit;
|
||||
AMsg := 'Code for group 2 missing.';
|
||||
exit;
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
Result := true;
|
||||
|
||||
@ -11,6 +11,9 @@ uses
|
||||
function CollectVecValues(AGrid: TStringGrid; AColIndex: Integer;
|
||||
AColCheck: IntDyneVec = nil): DblDyneVec;
|
||||
|
||||
function CollectFilteredVecValues(AGrid: TStringGrid; AColIndex, AFilterColIndex: Integer;
|
||||
AcceptValue: Double; AColCheck: IntDyneVec = nil): DblDyneVec;
|
||||
|
||||
function CollectMatValues(AGrid: TStringGrid; AColIndices: IntDyneVec): DblDyneMat;
|
||||
|
||||
procedure GetMinMax(AGrid: TStringGrid; AColIndex: Integer;
|
||||
@ -73,6 +76,43 @@ begin
|
||||
end;
|
||||
|
||||
|
||||
{ Extracts the grid values from the column with index AColIndex, but only those
|
||||
for which the value in the same row, but column AFilterCalIndex matches the
|
||||
AcceptValue }
|
||||
function CollectFilteredVecValues(AGrid: TStringGrid; AColIndex, AFilterColIndex: Integer;
|
||||
AcceptValue: Double; AColCheck: IntDyneVec = nil): DblDyneVec;
|
||||
var
|
||||
row, n: Integer;
|
||||
val1, val2: Double;
|
||||
begin
|
||||
Result := nil;
|
||||
SetLength(Result, AGrid.RowCount);
|
||||
n := 0;
|
||||
for row := 1 to AGrid.RowCount-1 do
|
||||
begin
|
||||
if Length(AColCheck) = 0 then
|
||||
begin
|
||||
if not ValidValue(AGrid, row, AColIndex) then continue;
|
||||
if not ValidValue(AGrid, row, AFilterColIndex) then continue;
|
||||
end else
|
||||
if not GoodRecord(AGrid, row, AColCheck) then continue;
|
||||
|
||||
if not TryStrToFloat(trim(AGrid.Cells[AColIndex, row]), val1) then
|
||||
raise ELazStats.CreateFmt('Non-numeric string "%s" in column %d, row %d',
|
||||
[AGrid.Cells[AColIndex, row]]);
|
||||
if not TryStrToFloat(trim(AGrid.Cells[AFilterColIndex, row]), val2) then
|
||||
raise ELazStats.CreateFmt('Non-numeric string "%s" in column %d, row %d',
|
||||
[AGrid.Cells[AFilterColIndex, row]]);
|
||||
if val2 = AcceptValue then
|
||||
begin
|
||||
Result[n] := val1;
|
||||
inc(n);
|
||||
end;
|
||||
end;
|
||||
SetLength(Result, n);
|
||||
end;
|
||||
|
||||
|
||||
{ Extracts the grid values from the columns with indices given by AColIndices
|
||||
and puts them into the columns of the result matrix.
|
||||
This means: The result matrix contains the variables as columns and the
|
||||
|
||||
@ -21,7 +21,9 @@ type
|
||||
// Vectors
|
||||
|
||||
operator + (A, B: TDblVector): TDblVector;
|
||||
operator + (A: TDblVector; b: double): TDblVector;
|
||||
operator - (A, B: TDblVector): TDblVector;
|
||||
operator - (A: TDblVector; b: double): TDblVector;
|
||||
operator * (A, B: TDblVector): Double;
|
||||
operator * (A: TDblVector; b: Double): TDblVector;
|
||||
operator * (a: Double; B: TDblVector): TDblVector;
|
||||
@ -129,6 +131,18 @@ begin
|
||||
end;
|
||||
|
||||
|
||||
operator + (A: TDblVector; b: double): TDblVector;
|
||||
var
|
||||
i, n: Integer;
|
||||
begin
|
||||
Result := nil;
|
||||
n := Length(A);
|
||||
Setlength(Result, n);
|
||||
for i := 0 to n-1 do
|
||||
Result[i] := A[i] + b;
|
||||
end;
|
||||
|
||||
|
||||
operator - (A, B: TDblVector): TDblVector;
|
||||
var
|
||||
i, n: Integer;
|
||||
@ -141,6 +155,18 @@ begin
|
||||
end;
|
||||
|
||||
|
||||
operator - (A: TDblVector; b: double): TDblVector;
|
||||
var
|
||||
i, n: Integer;
|
||||
begin
|
||||
Result := nil;
|
||||
n := Length(A);
|
||||
Setlength(Result, n);
|
||||
for i := 0 to n-1 do
|
||||
Result[i] := A[i] - b;
|
||||
end;
|
||||
|
||||
|
||||
// Vector dot product
|
||||
operator * (A, B: TDblVector): Double;
|
||||
var
|
||||
|
||||
Reference in New Issue
Block a user