[visionegg] Re: fixation viewport

Darren
Please read:
http://www.visionegg.org/reference/VisionEgg.Core.Viewport-class.html
Mark
On Mar 18, 2005, at 1:49 PM, Darren Weber wrote:

So I was confused by the reference documentation that indicates the
FixationSpot is a subclass of Stimulus, but to instantiate it, it
seems we need VisionEgg.Core.FixationSpot.

BTW, it's curious that the following fails:

fixation = VisionEgg.Core.FixationSpot()
fixation_view = Viewport( screen = screen, stimuli = fixation )

but this works:

fixation = VisionEgg.Core.FixationSpot()
fixation_view = Viewport( screen = screen, stimuli = [ fixation ] )

It seems that the stimuli parameter for Viewport must be a list.


On Fri, 18 Mar 2005 10:15:26 -0800, Darren Weber
<darrenleeweber@xxxxxxxxx> wrote:

Not to mention the problem with Stimulus.FixationSpot...


On Fri, 18 Mar 2005 10:12:52 -0800, Darren Weber
<darrenleeweber@xxxxxxxxx> wrote:
Yes, that would be nice, but how about answering my question? Do I
have to search all over the python world to find this too? I have
started using python, after many years of working with perl and
recently matlab. I have some idea of object oriented programming and
I realise that this particular problem seems so simple to solve. I
expected to read the class documentation, find the right
variable/parameter to set and then just set it. However, it was not
solved in 5 minutes and I'm not sure what the next step is. Maybe I
need to learn more about the python class and parameter setting
process. I was wondering if I have to use create_screen() rather than
get_default_screen() just so I can set the screen background color. I
figure that screen background color should be a dynamic variable, so I
was hoping that screen.bgcolor was something I could set. Not so
simple, Mr Magoo :-o


On Fri, 18 Mar 2005 17:58:27 +0000, Gabriel Nevarez
<nevarezg@xxxxxxxxxxxxx> wrote:

Hi, Andrew and all,

It might be a good idea to add a section to the VisionEgg web site with actual implemented studies (contributed by volunteers), in addition to the standard demos. This would aid with some of these questions, in addition to lowering the bar for newbies wanting to try out VisionEgg. At the very least, the addition of code templates for common psychophysical study-types, such as RSVP or multiple-object tracking, might be useful.

As a research programmer, I have the luxury of dedicating myself to scowering the related python newgroups and lists and trying things out on my own, but many of my psychologist colleagues don't have either the time or programming knowledge to do this... in effect, the very reason tools like VisionEgg exist (to make psychophysical studies easier to implement!)

I know I've had many of these same questions when I first started coding in python/VisionEgg, and I learned as everybody else does... by example.

cheers,
-=Gabriel Nevarez
Research Programmer
Psychology Department
Cardiff University
http://www.cf.ac.uk/psych

darrenleeweber@xxxxxxxxx 18/03/05 5:42 PM >>> 
Hi,

the construct

screen = get_default_screen()

creates a gray screen. The reference documentation for the screen
class indicates that it has a bgcolor parameter. I've tried a number
of ways to set it, without success. How do we set this parameter? I
want, bgcolor = (0.0, 0.0, 0.0), rather than the default gray.

Best, Darren
======================================
The Vision Egg mailing list
Archives: http://www.freelists.org/archives/visionegg
Website: http://www.visionegg.org/mailinglist.html
The Vision Egg mailing list
Archives: http://www.freelists.org/archives/visionegg
Website: http://www.visionegg.org/mailinglist.html



======================================
The Vision Egg mailing list
Archives: http://www.freelists.org/archives/visionegg
Website: http://www.visionegg.org/mailinglist.html


======================================
The Vision Egg mailing list
Archives: http://www.freelists.org/archives/visionegg
Website: http://www.visionegg.org/mailinglist.html

Other related posts: