LazStats: Minor improvements in XVsMultYUnit and PlotXYUnit. Input validation in SmoothDataUnit. Add hyperlinks to Analysis topic in chm file.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7380 8e941d3f-bd1b-0410-a28a-d453659cc2b4

applications/lazstats/source/forms/analysis/descriptive/plotxyunit.pas

@@ -50,7 +50,7 @@ type
   private
     { private declarations }
     FAutoSized: Boolean;
-    procedure plotxy(VAR Xpoints : DblDyneVec;
+    procedure PlotXY(VAR Xpoints : DblDyneVec;
                      VAR Ypoints : DblDyneVec;
                      VAR UpConf : DblDyneVec;
                      VAR LowConf : DblDyneVec;
@@ -112,19 +112,22 @@ var
   index: integer;
 begin
   index := VarList.ItemIndex;
-  if index > -1 then
+  if (index > -1) and (XEdit.Text = '') then
   begin
     XEdit.Text := VarList.Items[index];
     VarList.Items.Delete(index);
-  end;
     UpdateBtnStates;
+  end;
 end;
 
 procedure TPlotXYFrm.XOutBtnClick(Sender: TObject);
 begin
+  if XEdit.Text <> '' then
+  begin
     VarList.Items.Add(XEdit.Text);
     XEdit.Text := '';
     UpdateBtnStates;
+  end;
 end;
 
 procedure TPlotXYFrm.YInBtnClick(Sender: TObject);
@@ -132,19 +135,22 @@ var
   index: integer;
 begin
   index := VarList.ItemIndex;
-  if index > -1 then
+  if (index > -1) and (YEdit.Text = '') then
   begin
     YEdit.Text := VarList.Items[index];
     VarList.Items.Delete(index);
-  end;
     UpdateBtnStates;
+  end;
 end;
 
 procedure TPlotXYFrm.YOutBtnClick(Sender: TObject);
 begin
+  if YEdit.Text <> '' then
+  begin
     VarList.Items.Add(YEdit.Text);
     YEdit.Text := '';
     UpdateBtnStates;
+  end;
 end;
 
 procedure TPlotXYFrm.FormShow(Sender: TObject);
@@ -454,7 +460,7 @@ begin
           BlankFrm.Image1.Canvas.MoveTo(xpos,ypos);
           ypos := ypos + 10;
           BlankFrm.Image1.Canvas.LineTo(xpos,ypos);
-          Title := format('%6.2f',[Xvalue]);
+          Title := format('%.2f',[Xvalue]);
           offset := BlankFrm.Image1.Canvas.TextWidth(Title) div 2;
           xpos := xpos - offset;
           BlankFrm.Image1.Canvas.Pen.Color := clBlack;

applications/lazstats/source/forms/analysis/descriptive/smoothdataunit.lfm

@@ -160,12 +160,12 @@ object DataSmoothingForm: TDataSmoothingForm
     Left = 8
     Height = 19
     Top = 316
-    Width = 188
+    Width = 122
     Anchors = [akLeft, akBottom]
     BorderSpacing.Left = 8
     BorderSpacing.Top = 8
     BorderSpacing.Bottom = 4
-    Caption = 'Repeat Smoothing No. Times = '
+    Caption = 'Execute smoothing'
     TabOrder = 7
   end
   object RepeatEdit: TEdit
@@ -173,7 +173,7 @@ object DataSmoothingForm: TDataSmoothingForm
     AnchorSideLeft.Side = asrBottom
     AnchorSideTop.Control = RepeatChk
     AnchorSideTop.Side = asrCenter
-    Left = 204
+    Left = 138
     Height = 23
     Top = 314
     Width = 32
@@ -212,4 +212,17 @@ object DataSmoothingForm: TDataSmoothingForm
     ParentColor = False
     WordWrap = True
   end
+  object Label3: TLabel
+    AnchorSideLeft.Control = RepeatEdit
+    AnchorSideLeft.Side = asrBottom
+    AnchorSideTop.Control = RepeatEdit
+    AnchorSideTop.Side = asrCenter
+    Left = 178
+    Height = 15
+    Top = 318
+    Width = 29
+    BorderSpacing.Left = 8
+    Caption = 'times'
+    ParentColor = False
+  end
 end

applications/lazstats/source/forms/analysis/descriptive/smoothdataunit.pas

@@ -15,6 +15,7 @@ type
 
   TDataSmoothingForm = class(TForm)
     Bevel1: TBevel;
+    Label3: TLabel;
     Memo1: TLabel;
     RepeatEdit: TEdit;
     RepeatChk: TCheckBox;
@@ -66,23 +67,40 @@ end;
 
 procedure TDataSmoothingForm.ComputeBtnClick(Sender: TObject);
 var
-   DataPts, OutPts : DblDyneVec;
-   avalue, avg : double;
-   N, Reps, i, j, VarCol : integer;
-   VarLabel, strvalue : string;
+  DataPts, OutPts: DblDyneVec;
+  N, Reps, i, j, VarCol: integer;
+  VarLabel, strValue: string;
 begin
+  if SelectedEdit.Text = '' then
+  begin
+    MessageDlg('No variable selected.', mtError, [mbOk], 0);
+    exit;
+  end;
+
+  if RepeatChk.Checked then
+  begin
+    if RepeatEdit.Text = '' then
+    begin
+      MessageDlg('Repeat count not specified.', mtError, [mbOK], 0);
+      exit;
+    end;
+    if not TryStrToInt(RepeatEdit.Text, Reps) and (Reps < 1) then
+    begin
+      MessageDlg('Repeat count must be >= 1.', mtError, [mbOK], 0);
+      exit;
+    end;
+  end else
+    Reps := 1;
+
   N := NoCases;
   SetLength(DataPts,N);
   SetLength(OutPts,N);
-     Reps := StrToInt(RepeatEdit.Text);
+
   Varlabel := SelectedEdit.Text;
   for i := 1 to NoVariables do
     if VarLabel = OS3MainFrm.DataGrid.Cells[i,0] then VarCol := i;
   for i := 0 to N - 1 do
-     begin
-       avalue := StrToFloat(OS3MainFrm.DataGrid.Cells[VarCol,i+1]);
-       DataPts[i] := avalue;
-     end;
+    DataPts[i] := StrToFloat(OS3MainFrm.DataGrid.Cells[VarCol,i+1]);
 
   // repeat smoothing for number of times elected
   OutPts[0] := DataPts[0];
@@ -90,23 +108,21 @@ begin
   for j := 1 to Reps do
   begin
     for i := 1 to N - 2 do
-       begin
-         avg := (DataPts[i-1] + DataPts[i] + DataPts[i+1]) / 3.0;
-         OutPts[i] := avg;
-       end;
+      OutPts[i] := (DataPts[i-1] + DataPts[i] + DataPts[i+1]) / 3.0;
     if j < reps then
       for i := 0 to N - 1 do DataPts[i] := OutPts[i];
   end;
+
   // create a new variable and copy smoothed data into it
-     strvalue := 'Smoothed' + VarLabel;
+  if Reps = 1 then
+    strvalue := Format('%s_Smoothed', [VarLabel])
+  else
+    strvalue := Format('%s_Smoothed_%dx', [VarLabel, Reps]);
   DictionaryFrm.NewVar(NoVariables+1);
   DictionaryFrm.DictGrid.Cells[1,NoVariables] := strvalue;
   OS3MainFrm.DataGrid.Cells[NoVariables,0] := strvalue;
   for i := 0 to N - 1 do
-     begin
-         strvalue := format('%9.3f',[OutPts[i]]);
-         OS3MainFrm.DataGrid.Cells[NoVariables,i+1] := strvalue;
-     end;
+    OS3MainFrm.DataGrid.Cells[NoVariables,i+1] := Format('%0.3f', [OutPts[i]]);
 
   // clean up
   OutPts := nil;

applications/lazstats/source/forms/analysis/descriptive/xvsmultyunit.pas

@@ -64,7 +64,7 @@ var
 implementation
 
 uses
-  Math;
+  Math, Utils;
 
 { TXvsMultYForm }
 
@@ -439,7 +439,14 @@ begin
 end;
 
 procedure TXvsMultYForm.UpdateBtnStates;
+var
+  lSelected: Boolean;
 begin
+  lSelected := AnySelected(VarList);
+  XInBtn.Enabled := lSelected and (XEdit.Text = '');
+  YInBtn.Enabled := lSelected;
+  xOutBtn.Enabled := (XEdit.Text <> '');
+  YOutBtn.Enabled := AnySelected(YBox);
 end;
 
 initialization