[Maxima] Plots of complex functions
biomates at telefonica.net
Sat May 12 11:00:00 CDT 2007
> Thanks a lot for posting the examples. For each one a picture
> is rendered but I also get this message:
> gnuplot> splot '/home/robert/maxout.gnuplot_pipes' index 0 t '' w l lt
> 1 lc rgb 'green'
> line 0: ';' expected
> The Gnuplot version is gnuplot 4.0 patchlevel 0.
This is just the problem, you need version 4.2. Code "lc rgb 'green'" is
not recognized by gnuplot 4.0. In the first versions of 'draw', colors
were controlled by numeric indices, but I think it's more friendly to
allow color names (things like color="#325af7" are also possible).
Type ? color
> About cabs, it is not a simplifying operator (although I'm pretty
> sure we have raised the idea of making it simplify).
> float(abs(gamma(5+%i*7))) returns a noun, %CABS, so it
> is not evaluated to a number.
> float(abs(gamma(5+%i*7))), nouns;
> does return a number. In the past I've considered putting code
> into into COERCE-FLOAT-FUN to cause nouns to be evaluated.
> That would help this particular problem and also prevent the same
> problem with other nouns that happen to be generated.
I understand. That would be of great help.
Mario Rodriguez Riotorto
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