From 9b8548ed14ef4dce647c88ac39d2c5ef593ee881 Mon Sep 17 00:00:00 2001
From: Olivier Couet <Olivier.Couet@cern.ch>
Date: Fri, 19 Dec 2008 13:37:15 +0000
Subject: [PATCH] - New function TPaletteAxis::GetValueColor. Fix typo (in
the help) in TPaletteAxis.cxx.
git-svn-id: http://root.cern.ch/svn/root/trunk@27031 27541ba8-7e3a-0410-8455-c3a389f83636
---
hist/doc/v524/index.html | 26 ++++++++++++++++++++++++++
hist/histpainter/src/TPaletteAxis.cxx | 4 ++--
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/hist/doc/v524/index.html b/hist/doc/v524/index.html
index 2a8655fd623..65a56271c4c 100644
--- a/hist/doc/v524/index.html
+++ b/hist/doc/v524/index.html
@@ -2,3 +2,29 @@
<hr>
<a name="hist"></a>
<h3>Histogram package</h3>
+
+
+<h4>TPaletteAxis</h4>
+<ul>
+<li> New method <tt>Int_t TPaletteAxis::GetValueColor(z)</tt> to
+ return the color index of the given z value.
+ <br>
+ This funtion should be used after an histogram has been plotted with the
+ option COL or COLZ like in the following example:
+ <pre>
+ h2->Draw("COLZ");
+ gPad->Update();
+ TPaletteAxis *palette =
+ (TPaletteAxis*)h2->GetListOfFunctions()->FindObject("palette");
+ Int_t ci = palette->GetValueColor(30.);
+ </pre>
+ Then it is possible to retrieve the RGB components in the following way:
+ <pre>
+ TColor *c = gROOT->GetColor(ci);
+ float x,y,z;
+ c->GetRGB(x,y,z);
+ </pre>
+ This function is used by <tt>TPaletteAxis::GetBinColor()</tt>.
+</li>
+</ul>
+
diff --git a/hist/histpainter/src/TPaletteAxis.cxx b/hist/histpainter/src/TPaletteAxis.cxx
index 1ac82ecc58e..003df79544d 100644
--- a/hist/histpainter/src/TPaletteAxis.cxx
+++ b/hist/histpainter/src/TPaletteAxis.cxx
@@ -245,7 +245,7 @@ Int_t TPaletteAxis::GetBinColor(Int_t i, Int_t j)
{
// Returns the color index of the bin (i,j).
//
- // This funtion should be used after an histogram has been plotted with the
+ // This function should be used after an histogram has been plotted with the
// option COL or COLZ like in the following example:
//
// h2->Draw("COLZ");
@@ -300,7 +300,7 @@ Int_t TPaletteAxis::GetValueColor(Double_t zc)
{
// Returns the color index of the given z value
//
- // This funtion should be used after an histogram has been plotted with the
+ // This function should be used after an histogram has been plotted with the
// option COL or COLZ like in the following example:
//
// h2->Draw("COLZ");
--
GitLab