I have not tried your suggestions yet, but have traced the problem to the default font gnuplot is trying to use. I created the '.gnuplot' file in my user directory, and set a default font that I know exists in the /Library/Fonts/ directory on MacOS X. This eliminated those pesky messages.
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On Jul 28, 2011, at 3:47 PM, Mario Rodriguez <biomates at telefonica.net> wrote:
> On 07/27/2011 07:38 PM, Mark Brethen wrote:
>> Hello,
>>
>> I'm using the wxMaxima.app on Mac OS X 10.6.8 and when plotting I see the following 2 lines above the plot:
>>
>> Could not find/open font when opening font "arial", using internal non-scalable font
>> Could not find/open font when opening font "arial", using internal non-scalable font
>>
>> I set the environment variable GDFONTPATH in '.bashrc', however the warning persists. What terminal is maxima running in wxMaxima?
>
> Hello,
>
> I suspect this is a Gnuplot problem. Try to execute directly the Gnuplot script generated by Maxima (maxout.gnuplot):
>
> $ gnuplot -persist 'maxout.gnuplot'
>
> (Note that if you have used a 'plot' command, perhaps you have to run
>
> set_plot_option ([plot_format, gnuplot]);
>
> and create 'maxout.gnuplot' again)
>
>
> If yo get the same warning messages, something should be fixed in your local Gnuplot configuration.
>
> Sorry, I don't have any idea on the Mac OS installation.
>
> --
> Mario