[Maxima-bugs] [ maxima-Bugs-3064087 ] 2dplot doesn't recognise internal form for pi etc

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Bugs item #3064087, was opened at 2010-09-11 05:51
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Category: Lisp Core - Plotting
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Nobody/Anonymous (nobody)
Summary: 2dplot doesn't recognise internal form for pi etc

Initial Comment:
seems like gnuplot wants to see %pi instead of \pi - so
wxplot2d(sin(%pi*x), [a,-5,5])$        works, but
wxplot2d(sin(\pi*x), [a,-5,5])$        fails with
plot2d: expression evaluates to non-numeric value somewhere in plotting range.
as does
sin(%pi*x); wxplot2d([%], [a,-5,5])$
(i.e. macsyma is converting %pi to some internal representation which is shown as the greek letter pi, and pastes into notepad as \pi)

Maxima version: 5.22.1
Maxima build date: 11:48 8/13/2010
Host type: i686-pc-mingw32
Lisp implementation type: GNU Common Lisp (GCL)
Lisp implementation version: GCL 2.6.8

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3064087&group_id=4933