Re: direction field in gnuplot

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Leo wrote:
> I learned from Maxima mailing list that direction field can't be done
> in Gnuplot. 

If you describe what exactly "direction field" is supposed to mean, odds 
are you'll find out that's untrue.

I suspect that what you mean is a plain and simple vector field, which 
gnuplot can do quite fine.  For starters, have a look at 'vector.dem' 
and supporting documentation (--> help vectors)