Hi every body. I'm programing a random dot motion pattern and I need a precision higher than a pixel. In others programs I used the GEORGESON, FREEMAN, ...
Andres Martin
andres_mrtn@...
Oct 1, 2007 2:12 pm
7074
Hi, I am running psychtoolbox Beta on Mac OSX. On several macs the script works perfectly, however the sync tests fail repeatedly (but sporadically) on one ...
Kachina Allen
kachina_allen@...
Oct 1, 2007 4:11 pm
7075
Try the DotDemo.m in the PsychDemos subfolder of PTB-3. Change some of the parameters at the top of the script: f_kill = 0.00; dot_speed = 0.07; % speed...
You can enable subpixel rendering using the Screen OpenWindow multisample argument. On the comp I'm using here, 8 samples is the maximum, but you might have...
Did you test if 'beta' still fails when run from the account that you usually use for 'stable'? Could be a difference between the accounts, e.g., some ...
Hi, Thanks for the reply. I actually started collecting the information you needed and stumbled across the solution by accident. To solve the problem it was...
kachina_allen
kachina_allen@...
Oct 2, 2007 9:15 pm
7079
hi all- any idea why the search function for this yahoo group doesn't seem to find relevant results? for instance, i was looking for the thread starting at...
... if i set the CLUT using loadnormalizedgammatable, how are the above numbers interpreted (excluding textures for the moment)? do you interpret the value to...
Hi, I've been writing some scripts for PTB3 to use across several platforms (intel mac using OS X, Win2000, Win XP), and I'm getting up to speed fairly well....
Hi, I am a novice in psychtoolbox and am in urgent need for some stimuli scripts. In this regard, I was wondering if anybody has a script ready for a flashing...
Hi. Every time I call Screen(OpenWindow) on my Mac I get a screen telling me it's testing my graphics driver, and telling me to go to the PTB FAQ to find out...
courtney_lab
joshg@...
Oct 4, 2007 3:43 am
7085
The FAQ... <http://psychtoolbox.org/wikka.php?wakka=FaqWarningPrefs> tells you about 'VisualDebugLevel', which can be lowered to replace the friendly welcome...
Could you tell us which screen settings failed? And the exact error output of 'beta' vs. 'stable' in that case? I'd like to see what check fails in what way at...
Do you install onto a windoze partition on your Mac? The output suggests that. The error means either that the server wasn't available when you tried (did you...
... Strange, worked on MacBook/IntelGMA when i tested it last time. Provide PTB's Matlab output of the failure. I assume you run the *very latest* 'beta'? You...
... Color values are zero-based ie. 0-255, or 0.0 to 1.0 etc., this is the same that old PTB-2 did already. During drawing: YourColor ---> PTB remaps to 0-1...
Hi All- I am trying to read the current LUT so I can do some conversions on the LUT. However, when I run the 'ReadNormalizedGammaTable' the table that is read...
bjstankiewicz
bjstankiewicz@...
Oct 5, 2007 2:01 am
7091
Why? It's probably just a simple identity mapping if you didn't change anything or didn't set different gamma-curves for each color channel in some display ...
Dear friends, I am using Matlab version 7 and PTB version 3 flavor beta on Mac OSX. I have written an experiment in which i present grating flickering at 20...
rishi_rustam
rishi_rustam@...
Oct 6, 2007 7:01 am
7093
Hi, I just started using Matlab and PTB, and mostly just need to learn how to display a series of video clips (about 3 seconds each, with pauses in between)....
leiliew
leiliew@...
Oct 6, 2007 7:04 am
7094
Thanks for the previous help, group. Much appreciated. I'm now trying to have multiple monitors display images (possibly different ones). Here's the premise: ...
bbushongjr
bbushongjr@...
Oct 7, 2007 7:27 pm
7095
Hi Rishi, I don't know if the key press is responsible for the timing issue you're having (and please accept my apology for not closely looking at your code),...
hey mario- what do you think of a vectorized version of maketextures, ala drawdots? it would take 3-d arrays in case of luminance, or 4-d arrays if pixels are...
Assuming you're using Windows, then the left screen should be screen 1, and the right screen should be screen 2. Open two windows: win1 = Screen('OpenWindow',...
... Nothing. Would increase the complexity of an already complex subfunction for no real speed- or functionality gain. You would save something like 20...
I'm sorry-- I should have been more explicit. I am using a Mac OSX machine for these experiments. Is it the same setup?...
bbushongjr
bbushongjr@...
Oct 8, 2007 4:57 pm
7102
Hi Mario, Thanks so much for replying. At the time I posted, I was running PTB3's *very* latest beta, with matlab2006a (7.4). Since then, I've upgraded to...
