Hi I would like to draw a 2-d histogram in contour format showing the levels with lines of different colours. I get the lines as expected, but then I would also like to draw a legend. To this aim I need to retrieve in some way the colours id of the lines. On the user's guide 3.02 at page 42 it is explained how to access the TGraph objects that are created when drawing a contour plot, however when I tried it everything happened (sometimes crashes, sometimes wrong results and almost always running the same code gave different results). I was then obliged to guess the colours and set them by hand. Does anyone have an idea on how to solve this problem? Thanks in advance cheers Giacomo ----------------------------------------- | Giacomo BRUNO | | | | CERN | | EP Division | | | | mail: 40-2-B20 | | C.E.R.N. | | CH - 1211 Geneva 23 | | Switzerland | | e-mail: Giacomo.Bruno@cern.ch | | phone: +41 22 76 71624 | -----------------------------------------
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