limited number of types supported

What steps will reproduce the problem?
>>> import visvis, scipy.misc
>>> l=scipy.misc.lena(); print l.dtype
int64
>>> visvis.imshow(l)
<visvis.wobjects.textures.Texture2D object at 0x27db890>
>>> Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/visvis/backends/qtcommon.py", line 211, in paintEvent
    self.figure.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseFigure.py", line 773, in OnDraw
    self._Draw(mode)
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseFigure.py", line 860, in _Draw
    child._DrawTree(mode, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 123, in _DrawTree
    base.Wibject._DrawTree(self, mode, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 191, in _DrawTree
    item._DrawTree(mode,pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 184, in _DrawTree
    self.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 842, in OnDraw
    self._OnDrawInMode(DRAW_NORMAL, self.bgcolor)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 902, in _OnDrawInMode
    self._OnDrawContent(mode, bgcolor, pos, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 1030, in _OnDrawContent
    item._DrawTree(mode, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 184, in _DrawTree
    self.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/wobjects/textures.py", line 533, in OnDraw
    self._texture1.Enable(-1)
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseTexture.py", line 216, in Enable
    self._SetDataNow()
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseTexture.py", line 322, in _SetDataNow
    raise ValueError("Cannot convert datatype %s." % thetype)
ValueError: Cannot convert datatype int64.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/visvis/backends/qtcommon.py", line 211, in paintEvent
    self.figure.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseFigure.py", line 773, in OnDraw
    self._Draw(mode)
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseFigure.py", line 860, in _Draw
    child._DrawTree(mode, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 123, in _DrawTree
    base.Wibject._DrawTree(self, mode, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 191, in _DrawTree
    item._DrawTree(mode,pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 184, in _DrawTree
    self.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 842, in OnDraw
    self._OnDrawInMode(DRAW_NORMAL, self.bgcolor)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 902, in _OnDrawInMode
    self._OnDrawContent(mode, bgcolor, pos, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/axes.py", line 1030, in _OnDrawContent
    item._DrawTree(mode, pickerHelper)
  File "/usr/lib/python2.7/dist-packages/visvis/core/base.py", line 184, in _DrawTree
    self.OnDraw()
  File "/usr/lib/python2.7/dist-packages/visvis/wobjects/textures.py", line 533, in OnDraw
    self._texture1.Enable(-1)
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseTexture.py", line 216, in Enable
    self._SetDataNow()
  File "/usr/lib/python2.7/dist-packages/visvis/core/baseTexture.py", line 322, in _SetDataNow
    raise ValueError("Cannot convert datatype %s." % thetype)
ValueError: Cannot convert datatype int64.

What is the expected output? What do you see instead?

convert (on the fly) to float or int32

What version of the product are you using? On what operating system?
visvis v 1.8 on debian 7 (wheezy)

Please provide any additional information below.
Original issue reported on code.google.com by goo...@terre-adelie.org on 23 Feb 2013 at 11:14
google-code-export / visvis

limited number of types supported #69
