Hi Jochen, Alpha blending does sound as a good and easy option to bypass the problem. Now when you've mentioned it, it sounds like a rather obvious thing to...
What graphics card do you have? Your problem is of general interest, so it calls for a more general solution within PTB's image processing pipeline. Alpha...
Ok, this was simple. After 2 hours of recreational coding, the current PTB beta (-> "UpdatePsychtoolbox") now has built-in support for shading correction. It...
This would be a start... <https://wiki.ubuntu.com/DebuggingSoundProblems/KarmicCaveats> ... Ubuntu 9.1 is pretty disappointing in terms of sound support. I...
I'm having what is, as far as I can tell, a unique problem with Screen('Flip'). I'm trying to replicate a very old method of stimulus presentation, so I'm...
Benjamin Naecker
benjamin.naecker@...
Mar 8, 2010 3:50 pm
10713
Hi Ben, I'm not sure what you mean with break out of the for loop. You mean you use break;? For some obscure reason who knows that might be some problem...
Hello all, i have been trying to get the Talk2Tobii program, but the webpage to download from doesnt seem to be working: ...
renvierre
renvierre@...
Mar 8, 2010 4:12 pm
10715
It's hard to provide specific suggestions without a code sample. The best bet would be to make a self-contained, shortened version of your code that exhibits...
Hello I'm hoping to run an experiment with 3d stimuli, using the CrystalEyes 3 + E2 emitter system from RealD. It seems like many people who have made this...
scholl_lab
jonathan.flombaum@...
Mar 8, 2010 11:22 pm
10717
Yes, it should simply work with stereomode = 1 if you have a Quadro with 3-pin connector. stereomode=1 uses OpenGL's built-in quad-buffered stereo mode if the...
Ok, update. According to <http://store.apple.com/us/product/TW386LL/A> the mini-din connector works on os/x as well. -> Mini-Din sync framesequential stereo...
Hi, Just wondering if anybody has come across this error. It occured when using the DrawFormattedText function. It had been working perfectly when given...
hynespm_23
hynespm_23@...
Mar 10, 2010 5:09 pm
10720
Thank you for your answer, but unfortunately I didn't find any solution for my problem. I will kindly wait for a stable version, and meanwhile I use W$ ... ...
dtriponney
dtriponney@...
Mar 11, 2010 5:40 pm
10721
Hi all, I was looking for information regarding this issue when I happened across this thread. I am running a simple contrast sensitivity experiment utilising...
pfentonweb
p__fenton@...
Mar 11, 2010 8:41 pm
10722
UpdatePsychtoolbox, help DrawTextEncodingLocaleSettings...
Hi, I'm running into an error that I can't figure out, even after searching through the archives and all documentation on KbQueueCreate. I need to use...
congel2002
econgdon@...
Mar 14, 2010 8:02 pm
10724
Hi, I'm using Screen('DrawText') to output a moving stimuli to the screen and I need to get 2 keyboard inputs from the user. right arrow key press and then...
Last month, NVidia revealed their latest innovation in GPU power saving for Laptops, the so called "Optimus technology". This is meant for Laptops which have...
Something along the following should work, given the function getResponse defined below. I don't think that FlushEvents is needed for KbCheck-type keyboard...
Remove the [] brackets from the call... KbQueueCreate([psychtoolbox_forp_id, keysOfInterest]); ...and you'll probably be fine. Such brackets in our help don't...
boffins see below for the error message I get from DownloadPsychtoolbox. I googled psychtoolbox+"is already a working copy for a different URL" and came up...
I use randperm to randomize my the presentation of various trial types in one of my experiments. I have noticed that when I open MATLAB, and proceed to run...
JoshC
jdcosman@...
Mar 18, 2010 6:19 pm
10733
Hi all, quick question-I am trying to use drawtext to show some strings from a cell array. i have something like this: mathPracProbStr = {'(1*2) + 1', '(1/1) -...
Rand will restart at the same point each time you restart Matlab. You can solve this issue by resetting rand based on the current clock time of your computer....
Crystal Reeck
crystal.reeck@...
Mar 18, 2010 6:32 pm
10735
randperm() is based on the Matlab rand() function. The seed for rand() is reset to the same value every time Matlab is restarted, so successive calls to...
Charles E. (Ted) Wright
cewright@...
Mar 18, 2010 6:48 pm
10736
Try using curly brackets around i in your loop. ... ans = '(1*2) + 1' ... ans = (1*2) + 1 The first ans is a <1x1cell>, the second is a character string. Susan...
Susan Hall
Susan.Hall@...
Mar 18, 2010 8:49 pm
10737
Magic: I echo both responses about setting the random seed and add the fact that the functions rand and randn run on independent seeds, so the sum(100*clock)...
