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359 lines
10 KiB
ObjectPascal
359 lines
10 KiB
ObjectPascal
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unit LSMRunit;
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{$mode objfpc}{$H+}
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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, Buttons, Globals, MainUnit, MatrixLib, OutPutUnit,
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FunctionsLib, DataProcs, DictionaryUnit;
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type
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{ TLSMregForm }
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TLSMregForm = class(TForm)
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AllBtn: TBitBtn;
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IndepVars: TListBox;
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CancelBtn: TButton;
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ComputeBtn: TButton;
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CorrsChkBox: TCheckBox;
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CovChkBox: TCheckBox;
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CPChkBox: TCheckBox;
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DepInBtn: TBitBtn;
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DepOutBtn: TBitBtn;
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DepVar: TEdit;
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GroupBox1: TGroupBox;
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InBtn: TBitBtn;
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InProb: TEdit;
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Label1: TLabel;
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Label2: TLabel;
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Label3: TLabel;
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Label5: TLabel;
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MatSaveChkBox: TCheckBox;
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MeansChkBox: TCheckBox;
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SaveDialog1: TSaveDialog;
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OutBtn: TBitBtn;
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PredictChkBox: TCheckBox;
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ResetBtn: TButton;
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ReturnBtn: TButton;
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SDChkBox: TCheckBox;
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VarChkBox: TCheckBox;
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VarList: TListBox;
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procedure AllBtnClick(Sender: TObject);
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procedure CancelBtnClick(Sender: TObject);
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procedure ComputeBtnClick(Sender: TObject);
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procedure DepInBtnClick(Sender: TObject);
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procedure DepOutBtnClick(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure InBtnClick(Sender: TObject);
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procedure OutBtnClick(Sender: TObject);
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procedure ResetBtnClick(Sender: TObject);
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procedure ReturnBtnClick(Sender: TObject);
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private
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{ private declarations }
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IndepVarsCols : IntDyneVec;
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NoVars : integer;
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NoBlocks : integer;
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public
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{ public declarations }
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end;
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var
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LSMregForm: TLSMregForm;
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implementation
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procedure TLSMregForm.ResetBtnClick(Sender: TObject);
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VAR i : integer;
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begin
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IndepVars.Items.Clear;
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VarList.Items.Clear;
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NoBlocks := 1;
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for i := 1 to NoVariables do
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begin
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VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
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end;
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InBtn.Enabled := true;
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OutBtn.Enabled := false;
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DepInBtn.Enabled := true;
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DepOutBtn.Enabled := false;
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CPChkBox.Checked := false;
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CovChkBox.Checked := false;
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CorrsChkBox.Checked := true;
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MeansChkBox.Checked := true;
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VarChkBox.Checked := false;
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SDChkBox.Checked := true;
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MatSaveChkBox.Checked := false;
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PredictChkBox.Checked := false;
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// HeteroChk.Checked := false;
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NoVars := 0;
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DepVar.Text := '';
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InProb.Text := '0.05';
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SetLength(IndepVarsCols,NoVariables+1);
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end;
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procedure TLSMregForm.ReturnBtnClick(Sender: TObject);
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begin
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LSMregForm.Hide;
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end;
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procedure TLSMregForm.FormShow(Sender: TObject);
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begin
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ResetBtnClick(self);
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end;
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procedure TLSMregForm.AllBtnClick(Sender: TObject);
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VAR count, index : integer;
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begin
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count := VarList.Items.Count;
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for index := 0 to count-1 do
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begin
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IndepVars.Items.Add(VarList.Items.Strings[index]);
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end;
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VarList.Clear;
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end;
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procedure TLSMregForm.CancelBtnClick(Sender: TObject);
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begin
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if IndepVarsCols <> nil then IndepVarsCols := nil;
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LSMregForm.Hide;
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end;
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procedure TLSMregForm.ComputeBtnClick(Sender: TObject);
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Label CleanUp;
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var
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i, j, k, col, mattype, NCases, anerror : integer;
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NoIndepVars, DepVarCol, NEntered, StepNo : integer;
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R2, df1, df2, Y, z, BPG, chiprob : double;
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StdErrEst, F, FProbF, OldR2 : double;
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pdf1, pdf2, probin, prout : double;
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errorcode : boolean;
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BetaWeights : DblDyneVec;
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BWeights : DblDyneVec;
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BStdErrs : DblDyneVec;
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Bttests : DblDyneVec;
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tProbs : DblDyneVec;
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cellstring, outline : string;
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corrs : DblDyneMat;
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Means : DblDyneVec;
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Variances : DblDyneVec;
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StdDevs : DblDyneVec;
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title : string;
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IndRowLabels : StrDyneVec;
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IndColLabels : StrDyneVec;
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IndepInverse : DblDyneMat;
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XYCorrs : DblDyneVec;
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Partial : DblDyneVec;
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ColEntered : IntDyneVec;
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filename : string;
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constant : double;
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errcode : boolean;
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begin
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NCases := NoCases;
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SetLength(corrs,NoVariables+1,NoVariables+1);
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SetLength(IndepInverse,NoVariables,NoVariables+1);
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SetLength(IndepVarsCols,NoVariables+1);
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SetLength(BWeights,NoVariables+1);
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SetLength(BStdErrs,NoVariables+1);
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SetLength(Bttests,NoVariables+1);
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SetLength(tProbs,NoVariables+1);
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SetLength(Means,NoVariables+1);
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SetLength(Variances,NoVariables+1);
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SetLength(StdDevs,NoVariables+1);
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SetLength(IndepVarsCols,NoVariables+1);
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SetLength(IndColLabels,NoVariables+1);
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SetLength(IndRowLabels,NoVariables+1);
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SetLength(BetaWeights,NoVariables+1);
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SetLength(ColEntered,NoVariables+2);
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probin := StrToFloat(InProb.Text); // probability to include a block
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prout := 1.0;
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OutPutFrm.RichEdit.Clear;
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OutPutFrm.RichEdit.Lines.Add('Least Squares Multiple Regression by Bill Miller');
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errorcode := false;
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{ get dependendent variable column }
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if DepVar.Text = '' then
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begin
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ShowMessage('ERROR! No Dependent variable selected.');
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goto CleanUp;
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end;
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DepVarCol := 0;
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NoVars := NoVars + 1;
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for j := 1 to NoVariables do
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if DepVar.Text = OS3MainFrm.DataGrid.Cells[j,0] then DepVarCol := j;
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R2 := 0.0;
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OldR2 := 0.0;
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pdf1 := 0.0;
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pdf2 := 0.0;
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NEntered := 0;
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for i := 0 to IndepVars.Count-1 do
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begin
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cellstring := OS3Mainfrm.DataGrid.Cells[i+1,0];
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for j := 1 to NoVariables do
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begin
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if cellstring = OS3MainFrm.DataGrid.Cells[j,0] then
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begin
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IndepVarsCols[i] := j;
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ColEntered[i] := j;
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NEntered := NEntered + 1;
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IndRowLabels[NEntered-1] := cellstring;
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IndColLabels[NEntered-1] := cellstring;
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end;
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end;
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end;
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NEntered := NEntered + 1; // dependent variable last
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ColEntered[NEntered-1] := DepVarCol;
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IndRowLabels[NEntered-1] := OS3MainFrm.DataGrid.Cells[DepVarCol,0];
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IndColLabels[NEntered-1] := OS3MainFrm.DataGrid.Cells[DepVarCol,0];
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OutPutFrm.RichEdit.Lines.Add('');
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if CPChkBox.Checked = true then
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begin
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title := 'Cross-Products Matrix';
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GridXProd(NEntered,ColEntered,Corrs,errcode,NCases);
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MAT_PRINT(Corrs,NEntered,NEntered,title,IndRowLabels,IndColLabels,NCases);
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end;
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if CovChkBox.Checked = true then
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begin
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title := 'Variance-Covariance Matrix';
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GridCovar(NEntered,ColEntered,Corrs,Means,Variances,
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StdDevs,errcode,NCases);
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MAT_PRINT(Corrs,NEntered,NEntered,title,IndRowLabels,IndColLabels,NCases);
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end;
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Correlations(NEntered,ColEntered,Corrs,Means,Variances, StdDevs,errcode,NCases);
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if CorrsChkBox.Checked = true then
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begin
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title := 'Product-Moment Correlations Matrix';
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MAT_PRINT(Corrs,NEntered,NEntered,title,IndRowLabels,IndColLabels,NCases);
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end;
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title := 'Means';
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if MeansChkBox.Checked = true then
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DynVectorPrint(Means,NEntered,title,IndColLabels,NCases);
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title := 'Variances';
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if VarChkBox.Checked = true then
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DynVectorPrint(Variances,NEntered,title,IndColLabels,NCases);
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title := 'Standard Deviations';
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if SDChkBox.Checked = true then
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DynVectorPrint(StdDevs,NEntered,title,IndColLabels,NCases);
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if errorcode = true then
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begin
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ShowMessage('ERROR! A selected variable has no variability-run aborted.');
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goto CleanUp;
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end;
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NoIndepVars := NEntered - 1;
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MReg(NoIndepVars,ColEntered,DepVarCol,IndRowLabels,Means,Variances,
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StdDevs,BWeights,BetaWeights,BStdErrs,Bttests,tProbs,R2,StdErrEst,
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NCases,errorcode,true);
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df1 := NoIndepVars - pdf1;
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df2 := NCases - NoIndepVars - 1;
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F := ((R2 - OldR2) / (1.0 - R2)) * df2 / df1;
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FProbF := probf(F,df1,df2);
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if FProbF < probin then
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begin
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outline := 'Entry requirements met';
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OutPutFrm.RichEdit.Lines.Add(outline);
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end
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else
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begin
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outline := 'Entry requirements not met';
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OutPutFrm.RichEdit.Lines.Add(outline);
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end;
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OutPutFrm.ShowModal;
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OutPutFrm.RichEdit.Clear;
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{ add [predicted scores, residual scores, etc. to grid if options elected }
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if PredictChkBox.Checked = true then
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begin
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prout := 1.0;
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Correlations(NEntered,ColEntered,Corrs,Means,Variances,
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StdDevs,errcode,NCases);
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MReg2(NCases,NEntered,NoIndepVars,ColEntered,corrs,IndepInverse,
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IndRowLabels,R2,BetaWeights,
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Means,Variances,anerror,StdErrEst,constant,prout,true, false,false);
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Predict(ColEntered, NEntered, IndepInverse, Means, StdDevs,
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BetaWeights, StdErrEst, IndepVarsCols, NoIndepVars);
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end;
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// OutPutFrm.ShowModal;
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// OutPutFrm.RichEdit.Clear;
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if MatSaveChkBox.Checked = true then
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begin
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SaveDialog1.Filter := 'FreeStat matrix files (*.MAT)|*.MAT|All files (*.*)|*.*';
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SaveDialog1.FilterIndex := 1;
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if SaveDialog1.Execute then
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begin
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filename := SaveDialog1.FileName;
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MATSAVE(Corrs,NoVars,NoVars,Means,StdDevs,NCases,IndRowLabels,IndColLabels,filename);
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end;
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end;
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// OutPutFrm.ShowModal;
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CleanUp:
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ColEntered := nil;
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BetaWeights := nil;
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IndColLabels := nil;
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IndRowLabels := nil;
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StdDevs := nil;
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Variances := nil;
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Means := nil;
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IndepInverse := nil;
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corrs := nil;
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IndepVarsCols := nil;
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end;
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procedure TLSMregForm.DepInBtnClick(Sender: TObject);
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VAR index : integer;
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begin
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index := VarList.ItemIndex;
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DepVar.Text := VarList.Items.Strings[index];
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VarList.Items.Delete(index);
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DepOutBtn.Enabled := true;
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DepInBtn.Enabled := false;
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end;
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procedure TLSMregForm.DepOutBtnClick(Sender: TObject);
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begin
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VarList.Items.Add(DepVar.Text);
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DepVar.Text := '';
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DepInBtn.Enabled := true;
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end;
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procedure TLSMregForm.InBtnClick(Sender: TObject);
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VAR i, index : integer;
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begin
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index := VarList.Items.Count;
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i := 0;
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while i < index do
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begin
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if (VarList.Selected[i]) then
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begin
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IndepVars.Items.Add(VarList.Items.Strings[i]);
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VarList.Items.Delete(i);
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index := index - 1;
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i := 0;
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end
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else i := i + 1;
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end;
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OutBtn.Enabled := true;
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end;
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procedure TLSMregForm.OutBtnClick(Sender: TObject);
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VAR index : integer;
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begin
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index := IndepVars.ItemIndex;
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VarList.Items.Add(IndepVars.Items.Strings[index]);
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IndepVars.Items.Delete(index);
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InBtn.Enabled := true;
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if IndepVars.Items.Count = 0 then OutBtn.Enabled := false;
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end;
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initialization
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{$I lsmrunit.lrs}
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end.
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