The PS driver has support for unicode, though it relies on the fonts installed
in the postscript device that is rendering the file. There is no reliable
method for plplot to know which fonts are available to the postscript device.
When the PLplot ps driver was converted to unicode, I think the default use of
Hershey fonts for symbols was ended.
The behavior of postscript files can be unexpected under Windows. Depending on
whether you are viewing (third-party viewer or Windows provided) or printing
the files, there could be differences in the output due to available fonts.
There is an option that will enable Hershey symbols in the PS driver, so you
can set that if you do not have the fonts available.
> On Nov 27, 2015, at 11:57 AM, Peter Williams <peter.williams...@ntlworld.com>
> wrote:
>
> Hi Alan & Arjen
>
> Thanks for your attention. Hope I am posting this correctly. One of the
> first things I did when I built Plplot5.11.1 was to run the c code
> examples. Example x07c.c runs fine and displays the character #(855) –
> an arrow head in a Postscript file. All very jolly! So, the fonts must
> be built into the library. My program shows nothing. But maybe the
> comparison is false because I plot using plptex while x07c.c uses a
> different method, which I confess I am not clear about. It does print
> some characters correctly e.g. #(766) - the infinity symbol.
>
> I have been using Plplot for a long time starting with an ARM Acorn
> Archimedes. I built Plplot5.00 back in the 90's using a collection of
> .bat files. I still have it and it plots #(855) fine. I thought it was
> time to upgrade... I build using CMAKE 3.4.0-rc2 in its GUI form. It
> didn't seem to want to left me build a pdf device. Maybe I am not using
> it correctly.
>
> A simplified version of my program is:
>
> /*
> FontTest
> */
> #include <math.h>
> #include <plplot.h>
>
> int main()
> {
> int i;
> PLFLT x,y,dx,dy,theta,dTheta,xMin,xMax,yMin,yMax;
>
> xMin = -4.0; xMax = 1.0; yMin = -2.0; yMax = 2.0;
>
> /* Set up viewport and window, but do not draw box */
>
> plinit();
> plenv( xMin, xMax, yMin, yMax, 0, 0 );
> plfontld(1);plfont(1);
>
> x = -2.0; y = 2.0*exp(-x*x/4.0); dy = -x*exp(-x*x/4.0); /* Find
> arrow slope */
> plptex(x, y,1.0,dy,0.5,"#(855)"); /* C2 Arrow */
> plptex(x,-y,dx,dy,0.5,"#(855)"); /* C1 Arrow */
> plptex(x,0,-1.0,0.0,0.5,"#(855)"); /* Gamma Arrow */
>
> plend();
> return 1;
> }
>
> Best Wishes, Peter
>
>
>
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