octave gnuplot interaction for the purpose of using a different font

[Matt Funk]

Hi,

i am trying to use a different than default font for plotting to a png file. I 
can change the title and axis fairly easily but the tickmarks and legend 
still use the default font.

Now, i tried setting GNUPLOT_DEFAULT_GDFONT first from the script (via the 
system command) and also by hand in the shell from which i call my script. 
Neither seem to work. 

Now i think i need to set the gnuplot setting straight via __gnuplot_set__ . 
Is this the preferred way? Is there any other way i am not seeing.

thanks
matt