Matt,
The size of the error bar tick marks is proportional to the size
of the marker. Increase the marker size via graph->SetMarkerSize(xxx); with
eg xxx=2
If this solution does not work, you can always make two Draws, eg
mygraph.SetMarkerStyle(1); //a small dot
mygraph.SetMarkerSize(3); //to get large tick marks (3 times the default)
mygraph.DrawCopy("a"); //will draw the graph with the error bars
mygraph.SetMarkerStyle(21);//choose the real marker
mygraph.SetMarkerSize(1); //with the right size
mygraph.Draw("pX"); //draw the marker only
The default size should be good in principle. Could you send a small script (or
canvas.root) where the default is not good?
Rene Brun
"Matthew S. Lightwood" wrote:
>
> Hello Rooters
>
> I'm using the TGraphAssymErrors class to put some sytematics errors
> onto a plot and want to make the tick marks at the end of the error bars
> larger, since the default doesn't look very good. I can't find the
> appropriate method anywhere, except in PAW where it seems to be possible
> with "set ksiz" and in microsoft excel. Any ideas on how to achieve this
> anyone?
>
> Thanks very much.
>
> Matt Lightwood.
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