[pstricks] Unable to successfully include PostScript code in PSTricks code

[Herbert Voss]

R (Chandra) Chandrasekhar wrote:

> I am making diagrams for teaching geometric vectors using PSTricks and 
> LaTeX.  I use a Debian teTeX distribution on an i386 machine and can 
> provide further details of my setup if necessary.
> 
> I went through the excellent PSTricks tutorial at
> 
> http://sarovar.org/projects/pstricks/
> 
> and realized that I could use PostScript code within PSTricks commands 
> to compute dimensions of geometric objects.  I value this as it would 
> save me calculating separately, say, the square root of 6, and entering it.
> 
> I attach herewith a file, <Circle.tex> and a bash shell script, 
> <makegraphics> which works on <Circle.tex> to successfully produce .eps 
> and .pdf file outputs.
> 
> However, if I change the line
> 
> \pscircle[linecolor=Mahogany](-1, 7){2.4495}
> 
> to
> 
> \pscircle[linecolor=Mahogany](-1, 7){!6 sqrt}


this is only possible for the coordinates, not for the radius.
The radius is a length and pstricks has to build the right
unit, which can not be done by PostScript.

Herbert


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