RE: color palette ID

Hello,
May be you can also take as example what is done in THistPainter::PaintColorLevels :
http://root.cern.ch/root/html/src/THistPainter.cxx.html#YSSJU This will show you how the colors IDs are accessed when an histogram is painted using the option COL.
Cheers,
O.Couet

-----Original Message-----
From: owner-roottalk_at_root.cern.ch [mailto:owner-roottalk_at_root.cern.ch] On Behalf Of John Idarraga
Sent: Wednesday, September 23, 2009 8:34 PM To: Luca Grandi
Cc: roottalk_at_lxbuild091.cern.ch
Subject: Re: [ROOT] color palette ID

Hello Luca,

There is an example here, some code I wrote a long time ago (look at this member --> void MPXViewer::setHistoPalette(Int_t visMode) )  

http://atlaspc4.lps.umontreal.ca/cgi-bin/viewcvs.cgi/idarraga/medipix/Me diPixAnalysisCore/MPXViewer/MPXViewer.cpp?revision=1.25&view=markup

it should be self explanatory ... look specifically at the private member "palette".

cheers,

John Idarraga

On Wed, 2009-09-23 at 19:55 +0200, Luca Grandi wrote:
> Dear Root users,
>
> I am interested in using SetFillColor to set the colors of some
> graphical objects (not COLZ histo) according to a palette going from
> violet to red (in order to be proportional to a variable). Is there a

> way to associate to the color of the palette an increasing color ID?
> Thank you
>
> Luca
>
Received on Thu Sep 24 2009 - 09:38:11 CEST