Pi symbol on TLatex

ROOT
1

Hi, people!

I have a problem with TLaTeX and I don’t know if it is about my installation or what, but when I use the greek leter pi, I get the unequal symbol instead of pi. On my installation of LaTeX (I use Scientific Linux 5, but i’m not the admin), I solved this issue in LaTeX adding \usepackage{lmodern} but I think that’s not to be done with root

I attach a pdf showing the problem. The figure was made with root with a simple TH1F. The instructions were

rhoTrackPlusPt = new TH1F("rhoTrackPlusPt", "#pi^{+} candidate P_{T}", 100, 0, 2000);
rhoTrackPlusPt->SetXTitle("#pi^{+} P_{T} [MeV]");

No big science on it, and no further configuration.

thanks!
cheers,
Javier
problem.pdf (63.1 KB)

2

ROOT uses the symbol font to draw greek characters. The attached macro displays them all. The symbol fonts is present in $ROOTSYS/fonts. May be you have a symbol fonts installed elsewhere ? is your ROOTSYS variable defined ?

greek.gif596×672 11.6 KB


greek.C (5.36 KB)

3

I’ve just checked it, and $ROOTSYS is defined, and the fonts are well. Maybe I should add that I save the plots with c->Print("name.pdf") since I use mainly pdflatex. Should I try with another format before going any further?

4

Is it ok on screen ?
Pdf works too for me (see attached file)
greek.pdf (13 KB)

5

Yep, on the screen it works fine. I just realize it’s a problem with my LaTeX installation, not with ROOT. I saved them as jpg and it works fine, but the final pdf looks ugly :stuck_out_tongue:

I will have to search for a sollution with LaTeX.
¡thanks!

6

A ok… you have a problem in the latex translation. So, yes, thats a latex matter in that case.

7

Did you ever find a solution for this? I’m having the same issue but haven’t been able to find any solutions with Google.

Thanks,
James

8

The problem was that my Evince installation was primitive (I don’t have sudoer’s permission), so I cannot upgrade it. The solution is to include lmodern fonts, but I don’t know how to do that on ROOT, so I cannot help with more than “use Acrobat or an updated version of Evince”…