A problem with fonts and/or printing PNG files?

[Petr Mikulik]

> >  | >      x = 1:10 ;
> >  | >      plot (x);
> >  | >      title ('My plot');
> >  | >      print myplot.png -dpng
> >  | >
> >  | >      gdImageStringFT: Could not find/open font while printing string My plot
> >  | > with font Helvetica
> >  | >
> >  | >    It only seems to happen when I try to print PNG.  JPG, GIF and SVG
> >  | >    formats all print fine.
> >
> >  so what package do I need to get Arial?

> 
> This is GD library issue. You need to set GDFONTPATH to the
> directory where it can find Arial.ttf.
> Also if the file name is arial.ttf you need to say to gnuplot:
> 
> set title "foobar" font "arial,10"

You are right; and the file is really called arial.ttf, so "arial,10" is 
correct. For filenames, see e.g. the directory /usr/share/fonts/truetype

> Alternatively you can specify entire path:
> 
> gnuplot> set title "foobar" font "/usr/share/fonts/msttcorefonts/arial.ttf,14"
> 
> This all looks ugly and perhaps there is a better way, but I do not know it.

The GDFONTPATH should be set, if the gd library cannot find the fonts by 
default (e.g. %WINDIR%/FONTS or /usr/share/fonts/truetype/)


>| Output to GIF or JPG does not work either. It seems to me that gnuplot's
>| "set term gif|jpeg" is not used as
>|       print('myplot.jpg', '-djpg', '-S800,600')
>|       print('myplot.gif', '-dgif', '-S800,600')
>| does not work. I propose Octave uses gnuplot for this output, not a
>| conversion via postscript.
>
> I'd consider a patch.

The same code as for "print('x.png', '-dpng')" can be used, just with 
replaced "set term png" by "set term jpeg" or "set term gif".

I'm just looking to Matlab, and it seems that it does not have '-Sn,n' 
option, but '-rn' option for resolution ... but I don't see for which page 
size.

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PM