[visionegg] Re: map singratings on cylinder

Hi Andrew
Thanks a lot for your quick and great support. The sreenshot looks exactly the way I would like to have my stimulus. Unfortunately, the script doesn't work for me, I get the following error message: 

File "/project_linear_grating_on_cylinder.py", line 103, in -toplevel-
    size=(width,height))
File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/site-packages/VisionEgg/Core.py", line 1305, in __init__ 
    VisionEgg.ClassWithParameters.__init__(self,**kw)
File "/Library/Frameworks/Python.framework/Versions/2.4/lib/ python2.4/site-packages/VisionEgg/__init__.py", line 349, in __init__ raise TypeError("Parameter '%s' value %s is type %s (not type %s) in %s"%(parameter_name,value_str,type(value),tipe,self)) TypeError: Parameter 'position' value (760.0, 0) is type <type 'tuple'> (not type Sequence2 of Real) in <VisionEgg.Core.Viewport object at 0x2c90a30>
Do you have an idea why it doesn't work for me? I already tried to install python 2.5 and all the packages, including reinstall of visionegg, but that didn't help. 

Thanks again for your help!

Kaspar



On 21.12.2007, at 02:13, Andrew Straw wrote:


Kaspar Müller wrote:
I would like to project singratings on a round screen, therefore I need to correct the distortion in such a way that the grating-bars have the same width everywhere.
I just added a demo that, as far as I understand what you'd like to do, should do it: 

http://visionegg.org/trac/browser/trunk/visionegg/demo/project_linear_grating_on_cylinder.py?rev=1408

I'm also attaching a screenshot.

-Andrew
<project_linear_grating_on_cylinder.png>


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