Hi, I've got some questions concerning the visualization facilities of ROOT (Linux2 version with Motif2.0). First, if a canvas was overlapped by another window or popup, I have to click on it or enter a newline in the command window to have it repaint itself. How can I make it repainting automatically ? Second (and much more important),: How can I use the 2D histogram class to display arrays (i.e. gray scale images)? I tried this using the Fill() function, but this is VERY slow. Any way to acess the memory area holding the histogram data directly, or is there a way to visualize "arrays" directly? Can the lookup table be changed easily (i.e. to apply different colormaps like a spread of gray values, pseudo color, etc.)? Is there a possibility to transparently layer (superimpose)graphical areas (i.e. by marking a color as translucent)? Thanx in advance Jens --------------- Jens Racky racky@e-technik.uni-kl.de
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