Neither of the examples in doc/live/numerical_sage/plotting.html work
on my sage-4.0.alpha0. I get the following results when they are run
from a notebook:
The first three examples all fail with the same traceback:
{{{id=16|
import numpy
from scitools import easyviz
x = numpy.arange(-8,8,.2,dtype=float)
xx,yy = numpy.meshgrid(x,x)
r = numpy.sqrt(xx**2+yy**2) + 0.01
zz = numpy.sin(r)/r
easyviz.surfc(x,x,zz)
///
Traceback (most recent call last): r = numpy.sqrt(xx**2+yy**2) + 0.01
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/
scitools/easyviz/__init__.py", line 1506, in <module>
exec(cmd)
File "<string>", line 1, in <module>
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/
scitools/easyviz/vtk_.py", line 1, in <module>
from common import *
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/
scitools/easyviz/common.py", line 3, in <module>
from scitools.numpytools import seq, iseq, asarray, NewAxis,
ones, zeros, \
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/
scitools/numpytools.py", line 247, in <module>
(e, __name__)
ImportError: No module named ma
numpy import failed!
see doc of scitools.numpytools module for how to choose Numeric instead
}}}
The last example fails like this:
{{{id=18|
import numpy
from mayavi.tools import imv
x=numpy.arange(-8,8,.2,dtype=float)
def f(x,y):
r=numpy.sqrt(x**2+y**2)+.01
return numpy.sin(r)/r
imv.surf(x,x,f)
///
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/kwh/.sage/sage_notebook/worksheets/KevinHorton/11/code/
6.py", line 15, in <module>
exec compile(ur'imv.surf(x,x,f)' + '\n', '', 'single')
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/
Jinja-1.2-py2.5-linux-i686.egg/", line 1, in <module>
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/mayavi/
tools/imv.py", line 256, in surf
zval = Numeric.ravel(sampler(x, y, z, f_args=f_args,
f_keyw=f_keyw))
File "/opt/sage-4.0.alpha0/local/lib/python2.5/site-packages/mayavi/
tools/imv.py", line 185, in sampler
Numeric.zeros(len(ya), ya.typecode()),
AttributeError: 'numpy.ndarray' object has no attribute 'typecode'
}}}
I'm running sage-4.0.alpha0 on ubuntu 8.10 server. I suspect the
first failure is possibly due to an scitools++ spkg that is not
compatible with the latest numpy and matplotlib.
Are these examples truly broken, or is there possibly a problem with
sage-4.0.alpha0?
--
Kevin Horton
Ottawa, Canada
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