Hi,
-if you save as canvas.ps or eps
outside Root, use a Postscript viewver, eg
gv c1.ps
-if you save as a gif file, you can use gif viewers like xv,
any web browser, etc
-if you save it as a C++ macro, eg c1.C, you can regenerate the canvas
in a new session by executing
root . .x c1.C
-if you save it as a canvas.root file, eg c1.root, in a new session you can do
root > TFile f("c1.root");
root > c1->Draw()
see Users Guide for more information.
Rene Brun
tcli wrote:
>
> Dear root experts,
> I have problems in saving and reading a canvas. In a root session,
> after plotting histograms in a canvas with data from a root-tuple, I
> tried to save it in a directory (under which I opened the root session).
> But there are many different types of files: ROOT files (.root), Macro
> files (.C), PostScript (.ps), Encapsulated PostScript (.eps), SVG (.svg)
> and Gif file (.gif). So what kind of file I should choose to save the
> canvas? And how to read that file after saving? I tried saving it as a
> ROOT file as xx.root, but I don't know how to read the file (to view it
> as a canvas of histograms, I mean) in my directory.
>
> Thanks in advances,
> Lesley
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