You've already forked lazarus-ccr
LazStats: Inherit BinomialUnit from TBasicStatsReportAndChartFrame
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7817 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
wp_xxyyzz
@ -785,7 +785,7 @@
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<Unit85>
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<Filename Value="forms\analysis\nonparametric\binomialunit.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="BinomialFrm"/>
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<ComponentName Value="BinomialForm"/>
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<HasResources Value="True"/>
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<ResourceBaseClass Value="Form"/>
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<UnitName Value="BinomialUnit"/>
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@ -1,109 +1,46 @@
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object BinomialFrm: TBinomialFrm
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inherited BinomialForm: TBinomialForm
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Left = 802
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Height = 175
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Height = 409
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Top = 338
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Width = 340
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Width = 657
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HelpType = htKeyword
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HelpKeyword = 'html/ProbabilityofaBinomialEvent.htm'
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AutoSize = True
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BorderStyle = bsSingle
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Caption = 'Binomial Probability Calculator'
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ClientHeight = 175
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ClientWidth = 340
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OnActivate = FormActivate
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OnCreate = FormCreate
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OnShow = FormShow
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Position = poMainFormCenter
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LCLVersion = '2.1.0.0'
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object ResetBtn: TButton
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AnchorSideTop.Control = Bevel1
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = ComputeBtn
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Left = 127
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Height = 25
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Top = 145
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Width = 54
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Anchors = [akTop, akRight]
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AutoSize = True
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BorderSpacing.Left = 12
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BorderSpacing.Top = 8
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 8
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Caption = 'Reset'
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OnClick = ResetBtnClick
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TabOrder = 0
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end
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object ComputeBtn: TButton
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AnchorSideTop.Control = Bevel1
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = CloseBtn
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Left = 189
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Height = 25
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Top = 145
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Width = 76
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Anchors = [akTop, akRight]
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AutoSize = True
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BorderSpacing.Left = 8
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BorderSpacing.Top = 8
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BorderSpacing.Right = 8
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BorderSpacing.Bottom = 8
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Caption = 'Compute'
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OnClick = ComputeBtnClick
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TabOrder = 1
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end
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object CloseBtn: TButton
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AnchorSideTop.Control = Bevel1
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Owner
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AnchorSideRight.Side = asrBottom
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Left = 273
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Height = 25
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Top = 145
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Width = 55
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Anchors = [akTop, akRight]
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AutoSize = True
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BorderSpacing.Left = 8
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BorderSpacing.Top = 8
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BorderSpacing.Right = 12
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BorderSpacing.Bottom = 8
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Caption = 'Close'
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ModalResult = 11
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TabOrder = 2
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end
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object Bevel1: TBevel
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AnchorSideLeft.Control = Owner
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AnchorSideTop.Control = Panel1
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Owner
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AnchorSideRight.Side = asrBottom
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Left = 0
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Height = 9
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Top = 128
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Width = 340
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Anchors = [akTop, akLeft, akRight]
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Shape = bsBottomLine
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end
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object Panel1: TPanel
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AnchorSideLeft.Control = Owner
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AnchorSideTop.Control = Owner
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Left = 12
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Height = 120
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Top = 8
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Width = 292
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Alignment = taRightJustify
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AutoSize = True
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BorderSpacing.Left = 12
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BorderSpacing.Top = 8
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BorderSpacing.Right = 12
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BevelOuter = bvNone
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ClientHeight = 120
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ClientWidth = 292
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TabOrder = 3
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object Label1: TLabel
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ClientHeight = 409
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ClientWidth = 657
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inherited ParamsPanel: TPanel
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Height = 393
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Width = 299
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ClientHeight = 393
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ClientWidth = 299
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inherited CloseBtn: TButton
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Left = 244
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Top = 368
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TabOrder = 6
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end
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inherited ComputeBtn: TButton
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Left = 160
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Top = 368
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TabOrder = 5
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end
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inherited ResetBtn: TButton
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Left = 98
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Top = 368
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TabOrder = 4
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end
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inherited HelpBtn: TButton
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Left = 39
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Top = 368
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end
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inherited ButtonBevel: TBevel
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Top = 352
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Width = 299
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end
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object FreqALabel: TLabel[5]
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AnchorSideTop.Control = FreqAEdit
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AnchorSideTop.Side = asrCenter
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AnchorSideRight.Control = FreqAEdit
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Left = 2
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Left = -3
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Height = 15
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Top = 12
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Width = 239
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@ -112,85 +49,87 @@ object BinomialFrm: TBinomialFrm
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Caption = 'Frequency of events observed in category ''A'':'
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ParentColor = False
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end
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object Label2: TLabel
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object FreqBLabel: TLabel[6]
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AnchorSideTop.Control = FreqBEdit
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AnchorSideTop.Side = asrCenter
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AnchorSideRight.Control = FreqBEdit
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Left = 3
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Left = -2
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Height = 15
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Top = 39
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Top = 43
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Width = 238
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Anchors = [akTop, akRight]
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BorderSpacing.Right = 8
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Caption = 'Frequency of events observed in category ''B'':'
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ParentColor = False
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end
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object Label3: TLabel
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AnchorSideLeft.Control = Panel1
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object PropALabel: TLabel[7]
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AnchorSideTop.Control = PropAEdit
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AnchorSideTop.Side = asrCenter
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Left = 0
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AnchorSideRight.Control = PropAEdit
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Left = -5
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Height = 15
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Top = 66
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Top = 74
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Width = 241
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Anchors = [akTop, akRight]
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Caption = 'Proportion of events expected in category ''A'':'
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ParentColor = False
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end
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object FreqAEdit: TEdit
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object FreqAEdit: TEdit[8]
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AnchorSideLeft.Control = PropAEdit
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AnchorSideTop.Control = Panel1
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Left = 249
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AnchorSideTop.Control = ParamsPanel
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AnchorSideRight.Control = PropAEdit
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AnchorSideRight.Side = asrBottom
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Left = 244
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Height = 23
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Top = 8
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Width = 43
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Width = 55
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Alignment = taRightJustify
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Anchors = [akTop, akLeft, akRight]
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BorderSpacing.Top = 8
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TabOrder = 0
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Text = 'FreqAEdit'
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end
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object FreqBEdit: TEdit
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object FreqBEdit: TEdit[9]
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AnchorSideLeft.Control = PropAEdit
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AnchorSideTop.Control = FreqAEdit
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AnchorSideTop.Side = asrBottom
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Left = 249
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AnchorSideRight.Control = PropAEdit
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AnchorSideRight.Side = asrBottom
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Left = 244
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Height = 23
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Top = 35
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Width = 43
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Top = 39
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Width = 55
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Alignment = taRightJustify
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BorderSpacing.Top = 4
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Anchors = [akTop, akLeft, akRight]
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BorderSpacing.Top = 8
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TabOrder = 1
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Text = 'FreqBEdit'
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end
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object PropAEdit: TEdit
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AnchorSideLeft.Control = Label3
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object PropAEdit: TEdit[10]
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AnchorSideLeft.Side = asrBottom
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AnchorSideTop.Control = FreqBEdit
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AnchorSideTop.Side = asrBottom
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Left = 249
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AnchorSideRight.Control = ParamsPanel
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AnchorSideRight.Side = asrBottom
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Left = 244
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Height = 23
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Top = 62
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Width = 43
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Top = 70
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Width = 55
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Alignment = taRightJustify
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Anchors = [akTop, akRight]
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BorderSpacing.Left = 8
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BorderSpacing.Top = 4
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BorderSpacing.Top = 8
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TabOrder = 2
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Text = 'ProbAEdit'
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end
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object PlotChk: TCheckBox
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AnchorSideLeft.Control = Panel1
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AnchorSideTop.Control = PropAEdit
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AnchorSideTop.Side = asrBottom
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AnchorSideRight.Control = Panel1
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AnchorSideRight.Side = asrBottom
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Left = 167
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Height = 19
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Top = 101
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Width = 125
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Alignment = taLeftJustify
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Anchors = [akTop, akRight]
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BorderSpacing.Top = 16
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Caption = 'Plot the distribution'
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TabOrder = 3
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end
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end
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inherited ParamsSplitter: TSplitter
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Left = 311
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Height = 409
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end
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inherited PageControl: TPageControl
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Left = 320
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Height = 393
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Width = 329
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end
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end
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@ -5,174 +5,173 @@ unit BinomialUnit;
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interface
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uses
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Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
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StdCtrls, ExtCtrls,
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OutputUnit, FunctionsLib, GraphLib;
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Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls, ExtCtrls,
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FunctionsLib, GraphLib, BasicStatsReportAndChartFormUnit;
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type
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{ TBinomialFrm }
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{ TBinomialForm }
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TBinomialFrm = class(TForm)
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Bevel1: TBevel;
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Panel1: TPanel;
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PlotChk: TCheckBox;
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ResetBtn: TButton;
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ComputeBtn: TButton;
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CloseBtn: TButton;
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TBinomialForm = class(TBasicStatsReportAndChartForm)
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FreqAEdit: TEdit;
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FreqBEdit: TEdit;
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PropAEdit: TEdit;
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Label1: TLabel;
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Label2: TLabel;
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Label3: TLabel;
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procedure ComputeBtnClick(Sender: TObject);
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procedure FormActivate(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure ResetBtnClick(Sender: TObject);
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FreqALabel: TLabel;
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FreqBLabel: TLabel;
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PropALabel: TLabel;
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private
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function Validate(out AMsg: String; out AControl: TWinControl): Boolean;
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{ private declarations }
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protected
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procedure AdjustConstraints; override;
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procedure Compute; override;
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function Validate(out AMsg: String; out AControl: TWinControl): Boolean; override;
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public
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{ public declarations }
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constructor Create(AOwner: TComponent); override;
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procedure Reset; override;
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end;
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var
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BinomialFrm: TBinomialFrm;
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BinomialForm: TBinomialForm;
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implementation
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{$R *.lfm}
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uses
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Math;
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Math,
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TACustomSeries,
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Globals, MathUnit, ChartFrameUnit;
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{ TBinomialFrm }
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{ TBinomialForm }
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procedure TBinomialFrm.ResetBtnClick(Sender: TObject);
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constructor TBinomialForm.Create(AOwner: TComponent);
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begin
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FreqAEdit.Text := '';
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FreqBEdit.Text := '';
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PropAEdit.Text := '';
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FreqAEdit.SetFocus;
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inherited;
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FChartFrame.Chart.Margins.Bottom := 0;
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FChartFrame.Chart.BottomAxis.AxisPen.Visible := true;
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FChartFrame.Chart.BottomAxis.ZPosition := 1;
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end;
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procedure TBinomialFrm.FormActivate(Sender: TObject);
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procedure TBinomialForm.AdjustConstraints;
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begin
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inherited;
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ParamsPanel.Constraints.MinWidth := Max(
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PropALabel.Width + PropAEdit.Width + PropAEdit.BorderSpacing.Left,
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4*CloseBtn.Width + 3*CloseBtn.BorderSpacing.Left
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);
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ParamsPanel.Constraints.MinHeight := PropAEdit.Top + PropAEdit.Height
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end;
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procedure TBinomialForm.Reset;
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begin
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inherited;
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FreqAEdit.Clear;
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FreqBEdit.Clear;
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PropAEdit.Clear;
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end;
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procedure TBinomialForm.Compute;
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const
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N_MAX = 35;
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var
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w: Integer;
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begin
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w := MaxValue([ResetBtn.Width, ComputeBtn.Width, CloseBtn.Width]);
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ResetBtn.Constraints.MinWidth := w;
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ComputeBtn.Constraints.MinWidth := w;
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CloseBtn.Constraints.MinWidth := w;
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end;
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procedure TBinomialFrm.FormCreate(Sender: TObject);
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begin
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if GraphFrm = nil then
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Application.CreateForm(TGraphFrm, GraphFrm);
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end;
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procedure TBinomialFrm.FormShow(Sender: TObject);
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begin
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ResetBtnClick(self);
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end;
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procedure TBinomialFrm.ComputeBtnClick(Sender: TObject);
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var
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p, Q, Probability, z, CorrectedA, SumProb : double;
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A, b, N, X, i: integer;
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P, Q, probability, z, correctedA, SumProb, mean, sigma: double;
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A, B, N, i: integer;
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xPts: DblDyneVec = nil;
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yPts: DblDyneVec = nil;
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lReport: TStrings;
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msg: String;
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C: TWinControl;
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ser: TChartSeries;
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begin
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if not Validate(msg, C) then begin
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C.SetFocus;
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MessageDlg(msg, mtError,[mbOK], 0);
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ModalResult := mrNone;
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exit;
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end;
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SumProb := 0.0;
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A := round(StrToFloat(FreqAEdit.Text));
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b := round(StrToFloat(FreqBEdit.Text));
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p := StrToFloat(PropAEdit.Text);
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N := A + b;
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Q := 1.0 - p;
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B := round(StrToFloat(FreqBEdit.Text));
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P := StrToFloat(PropAEdit.Text);
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N := A + B;
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Q := 1.0 - P;
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lReport := TStringList.Create;
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try
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lReport.Add('BINOMIAL PROBABILITY TEST');
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lReport.Add('');
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lReport.Add('Frequency of %d out of %d observed', [A, N]);
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lReport.Add('The theoretical proportion expected in category A is %.f', [p]);
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lReport.Add('The theoretical proportion expected in category A is %.3f', [P]);
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||||
lReport.Add('');
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lReport.Add('The test is for the probability of a value in category A as small or smaller');
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lReport.Add('than that observed given the expected proportion.');
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||||
lReport.Add('');
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||||
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||||
//Use normal distribution approximation
|
||||
if (N > 35) then
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||||
if (N > N_MAX) then
|
||||
begin
|
||||
CorrectedA := A;
|
||||
if A < N * p then CorrectedA := A + 0.5;
|
||||
if A > N * p then CorrectedA := A - 0.5;
|
||||
z := (CorrectedA - N * p) / sqrt(N * p * Q);
|
||||
lReport.Add('Z value for Normal Distribution approximation: %.3f', [z]);
|
||||
Probability := probz(z);
|
||||
// Use normal distribution approximation
|
||||
correctedA := A;
|
||||
if A < N * P then correctedA := A + 0.5;
|
||||
if A > N * P then correctedA := A - 0.5;
|
||||
z := (correctedA - N * P) / sqrt(N * P * Q);
|
||||
lReport.Add('Z value for normal nistribution approximation: %.3f', [z]);
|
||||
Probability := NormalDist(z);
|
||||
lReport.Add('Probability: %6.4f', [Probability]);
|
||||
end else
|
||||
//Use binomial fomula
|
||||
begin
|
||||
for X := 0 to A do
|
||||
// Use binomial fomula
|
||||
sumProb := 0;
|
||||
for i := 0 to A do
|
||||
begin
|
||||
Probability := combos(X, N) * Power(p, X) * Power(Q, N - X);
|
||||
lReport.Add('Probability of %2d: %6.4f', [X, Probability]);
|
||||
SumProb := SumProb + Probability;
|
||||
Probability := combos(i, N) * IntPower(P, i) * IntPower(Q, N-i);
|
||||
lReport.Add('Probability of %d: %6.4f', [i, Probability]);
|
||||
sumProb := sumProb + Probability;
|
||||
end;
|
||||
lReport.Add('Binomial Probability of %d or less out of %d: %.4f', [A, N, SumProb]);
|
||||
lReport.Add('');
|
||||
lReport.Add('Binomial Probability of %d or less out of %d: %.4f', [A, N, sumProb]);
|
||||
end;
|
||||
|
||||
DisplayReport(lReport);
|
||||
FReportFrame.DisplayReport(lReport);
|
||||
finally
|
||||
lReport.Free;
|
||||
end;
|
||||
|
||||
if PlotChk.Checked then
|
||||
// Plot the distribution
|
||||
FChartFrame.Clear;
|
||||
FChartFrame.SetXTitle('Values');
|
||||
FChartFrame.SetYTitle('Probability');
|
||||
if N > N_MAX then
|
||||
begin
|
||||
if N <= 35 then
|
||||
FChartFrame.SetTitle('Binomial Distribution' + LineEnding + '(approximated by Normal Distribution)');
|
||||
mean := N*P;
|
||||
sigma := sqrt(N * P * Q);
|
||||
SetLength(xPts, N+1);
|
||||
SetLength(yPts, N+1);
|
||||
for i := 0 to N do
|
||||
begin
|
||||
SetLength(GraphFrm.Xpoints,1,N+1);
|
||||
SetLength(GraphFrm.Ypoints,1,N+1);
|
||||
for i := 0 to N do
|
||||
begin
|
||||
GraphFrm.Xpoints[0,i] := i;
|
||||
Probability := combos(i,N) * power(p,i) * power(Q,(N-i));
|
||||
GraphFrm.Ypoints[0,i] := Probability;
|
||||
end;
|
||||
GraphFrm.GraphType := 2;
|
||||
GraphFrm.nosets := 1;
|
||||
GraphFrm.nbars := N;
|
||||
GraphFrm.BackColor := clCream;
|
||||
GraphFrm.WallColor := clDkGray;
|
||||
GraphFrm.FloorColor := clGray;
|
||||
GraphFrm.Heading := 'Binomial Distribution';
|
||||
GraphFrm.XTitle := 'Values';
|
||||
GraphFrm.YTitle := 'Probability';
|
||||
GraphFrm.barwideprop := 0.5;
|
||||
GraphFrm.AutoScaled := true;
|
||||
GraphFrm.ShowLeftWall := true;
|
||||
GraphFrm.ShowRightWall := true;
|
||||
GraphFrm.ShowBottomWall := true;
|
||||
GraphFrm.ShowModal;
|
||||
GraphFrm.Xpoints := nil;
|
||||
GraphFrm.Ypoints := nil;
|
||||
end else
|
||||
MessageDlg('Cannot plot for N > 35', mtInformation, [mbOK], 0);
|
||||
xPts[i] := i;
|
||||
yPts[i] := NormalDistDensity(i, mean, sigma);
|
||||
end;
|
||||
end else
|
||||
begin
|
||||
FChartFrame.SetTitle('Binomial Distribution');
|
||||
SetLength(xPts, N+1);
|
||||
SetLength(yPts, N+1);
|
||||
for i := 0 to N do
|
||||
begin
|
||||
xPts[i] := i;
|
||||
yPts[i] := Combos(i, N) * IntPower(p, i) * IntPower(Q, N-i);
|
||||
end;
|
||||
end;
|
||||
if N < 50 then
|
||||
ser := FChartFrame.PlotXY(ptBars, xPts, yPts, nil, nil, '', DATA_COLORS[0])
|
||||
else
|
||||
ser := FChartFrame.PlotXY(ptArea, xPts, yPts, nil, nil, '', DATA_COLORS[0]);
|
||||
ser.ZPosition := 2;
|
||||
FChartFrame.Chart.Legend.Visible := false;
|
||||
end;
|
||||
|
||||
function TBinomialFrm.Validate(out AMsg: String; out AControl: TWinControl): Boolean;
|
||||
|
||||
function TBinomialForm.Validate(out AMsg: String; out AControl: TWinControl): Boolean;
|
||||
var
|
||||
x: Double;
|
||||
n: Integer;
|
||||
begin
|
||||
Result := false;
|
||||
if (FreqAEdit.Text = '') or (FreqBEdit.Text = '') or (PropAEdit.Text = '') then
|
||||
@ -183,15 +182,15 @@ begin
|
||||
if PropAEdit.Text = '' then AControl := PropAEdit;
|
||||
exit;
|
||||
end;
|
||||
if not TryStrToFloat(FreqAEdit.Text, x) then
|
||||
if not TryStrToInt(FreqAEdit.Text, n) then
|
||||
begin
|
||||
AMsg := 'No valid number.';
|
||||
AMsg := 'No valid integer.';
|
||||
AControl := FreqAEdit;
|
||||
exit;
|
||||
end;
|
||||
if not TryStrToFloat(FreqBEdit.Text, x) then
|
||||
if not TryStrToInt(FreqBEdit.Text, n) then
|
||||
begin
|
||||
AMsg := 'No valid number.';
|
||||
AMsg := 'No valid integer.';
|
||||
AControl := FreqBEdit;
|
||||
exit;
|
||||
end;
|
||||
@ -201,12 +200,15 @@ begin
|
||||
AControl := PropAEdit;
|
||||
exit;
|
||||
end;
|
||||
if (x < 0) or (x > 1) then
|
||||
begin
|
||||
AMsg := 'Number between 0 and 1 expected.';
|
||||
AControl := PropAEdit;
|
||||
exit;
|
||||
end;
|
||||
|
||||
Result := true;
|
||||
end;
|
||||
|
||||
initialization
|
||||
{$I binomialunit.lrs}
|
||||
|
||||
end.
|
||||
|
||||
|
||||
@ -1896,9 +1896,9 @@ end;
|
||||
// Menu "Analysis" > "Nonparametric" > "Probability of a Binomial Event"
|
||||
procedure TOS3MainFrm.mnuAnalysisNonPar_BinomialClick(Sender: TObject);
|
||||
begin
|
||||
if BinomialFrm = nil then
|
||||
Application.CreateForm(TBinomialFrm, BinomialFrm);
|
||||
BinomialFrm.ShowModal;
|
||||
if BinomialForm = nil then
|
||||
Application.CreateForm(TBinomialForm, BinomialForm);
|
||||
BinomialForm.Show;
|
||||
end;
|
||||
|
||||
// Menu "Analysis" > "Nonparametric" > Kendall's Tau and Partial Tau"
|
||||
|
||||
@ -208,7 +208,11 @@ begin
|
||||
TBarSeries(Result).BarBrush.Color := AColor;
|
||||
end;
|
||||
ptArea:
|
||||
Result := TAreaSeries.Create(self);
|
||||
begin
|
||||
Result := TAreaSeries.Create(self);
|
||||
TAreaSeries(Result).AreaBrush.Color := AColor;
|
||||
TAreaSeries(Result).AreaLinesPen.Style := psClear;
|
||||
end;
|
||||
else
|
||||
raise Exception.Create('Unknown plot type.');
|
||||
end;
|
||||
|
||||
@ -461,6 +461,7 @@ function probz(z : double) : double;
|
||||
|
||||
begin
|
||||
Result := 0.5 + simpsonintegral(0.0,z);
|
||||
// wp: a faster code is in unit MathUnit, NormalDist(z).
|
||||
end;
|
||||
//-----------------------------------------------------------------------
|
||||
|
||||
|
||||
Reference in New Issue
Block a user