Hello,
I'm running Sage Version 3.4.1 on ubuntu 8.04.
I'm trying to implement latex(G) for a graph G. After creating my own
branch to work in I executed the command
sage -b
to build the library and got no errors.
Within the latex(G) procedure I have this fragment of code
for u in self:
# then specify the color of the label
s = s + '\color{' + color_names[ color_names[ u ] ] +
'}{'
if vertex_math:
s = s+'$'
s = s+str(latex(u))
if vertex_math:
s = s+'$'
s = s+'},\n'
As you can observe, the function latex(u) is used, where u is a
vertex, and this is what I get in sage
sage: G=graphs.PetersenGraph()
sage: latex(G)
---------------------------------------------------------------------------
NameError Traceback (most recent call
last)
/home/fidel/<ipython console> in <module>()
/opt/sage-3.4.1/local/lib/python2.5/site-packages/sage/misc/latex.pyc
in latex(x)
138 def latex(x):
139 if hasattr(x, '_latex_'):
--> 140 return LatexExpr(x._latex_())
141
142 for k, f in latex_table.iteritems():
/opt/sage-3.4.1/local/lib/python2.5/site-packages/sage/graphs/
graph.pyc in _latex_(self, layout, bb, units, prefix, vertex_math,
style, vertex_color, edge_color, label_color, labels)
778 if vertex_math:
779 s = s+'$'
--> 780 s = s+str(latex(u))
781 if vertex_math:
782 s = s+'$'
NameError: global name 'latex' is not defined
Is there a package I should import to avoid getting this message?
Please let me know if you would like to see the whole graph.py file or
if you need more information about this.
Greetings,
Fidel
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