How to Define a new Color Palette?

From: Frederic FAURE (faure@labs.polycnrs-gre.fr)
Date: Wed May 19 1999 - 10:42:22 MEST 

Hello,
i would like to use a colour palette of grey (from white to black).

Following an exemple, I try the following code.
It works with :  Draw("col");
but doesn't work with: Draw("cont")  (and i want to use this option).

Do you know how to correct this?
Thanks,
Fred

//-----------------------------------

 const int colNum=10; // nombre de couleurs
 const int colPoint=3;   // numero de la couleur de depart
 
  TSeqCollection *colorList=gROOT->GetListOfColors();
 while(colorList->LastIndex()>0)
    colorList->RemoveLast();
 
 int mypalette[colNum]; // numero des couleurs 
 for ( int i=0; i< colNum; i++)
   {
    
TColor(i+colPoint,1-(i/((colNum)*1.0)),1-(i/((colNum)*1.0)),1-(i/((colNum)*1.0)),"
"); // gris
     if((i+colPoint)<100) 
       {
	 colorList->RemoveLast(); //TColor *light
	 colorList->RemoveLast(); //TColor *dark
       }
     mypalette[i]=i+colPoint;
   }

 gStyle->SetPalette(colNum,mypalette);
 
 TF2 *f2 = new TF2("f2","exp(-(x^2) - (y^2))",-3,3,-3,3);
 f2->SetContour(colNum);
 f2->SetFillColor(0);

 f2->Draw("cont");
//--------------------------------------





-- 
Frederic Faure
LPMMC (Maison des Magisteres Jean Perrin, CNRS)
BP 166 38042 Grenoble Cedex 9 France
email: faure@labs.polycnrs-gre.fr
tel: 04 76 88 74 98
fax: 04 76 88 79 81

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