I have a problem in drawing a graph in ROOT. Actually I have read two .root files and have calculated two sets of parameters. And now I want to plot both sets in a single graph with different colors or with different marker style. So how to proceed. Looking for your kind reply.
See http://root.cern.ch/root/html/TAttLine.html for details.
See http://root.cern.ch/root/html/TAttMarker.html for details.
See also http://root.cern.ch/root/html/TGraphPainter.html and http://root.cern.ch/root/html/THistPainter.html#HP060 for additional details.