Strange plot behavior : I would like to just plot a Bessel function
Am I doing anything wrong ?
(I tried to plot it through an iterator and a list plot... works ok
but unhandy with sagetex)
sage: plot(bessel_J(1,x),(x,0,10))
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/usr/local/src/sage-4.3.2/<ipython console> in <module>()
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
functions/special.pyc in bessel_J(nu, z, algorithm, prec)
771 C = ComplexField(prec)
772 nu = C(nu)
--> 773 z = C(z)
774 K = C
775 if nu == 0:
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/rings/
complex_field.pyc in __call__(self, x, im)
265 if im is not None:
266 x = x, im
--> 267 return Parent.__call__(self, x)
268
269 def _element_constructor_(self, x):
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
structure/parent.so in sage.structure.parent.Parent.__call__ (sage/
structure/parent.c:6206)()
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3142)()
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_ (sage/
structure/coerce_maps.c:3040)()
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/rings/
complex_field.pyc in _element_constructor_(self, x)
289
290 try:
--> 291 return x._complex_mpfr_field_( self )
292 except AttributeError:
293 pass
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
symbolic/expression.so in
sage.symbolic.expression.Expression._complex_mpfr_field_ (sage/
symbolic/expression.cpp:4981)()
/usr/local/src/sage-4.3.2/local/lib/python2.6/site-packages/sage/
symbolic/expression.so in
sage.symbolic.expression.Expression._eval_self (sage/symbolic/
expression.cpp:4469)()
TypeError: Cannot evaluate symbolic expression to a numeric value.
sage:
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