Hi all,
I am a newbie to the psychtoolbox. I have met with the following
difficulties/questions:
a) Does it support debugging in Matlab on PC? I have set breakpoints and
found breakpoints were erased by psychtoolbox and basically they have no
effects.
b) During Psychphysics experiments, I have switched back to Matlab
command line to check output results, but then how to switch back to
Psychtoolbox Screen? I was never able to switch back, every time I ended up
with kill the Matlab session.
c) In the Quest functions, do they have a valid range for “tTest”,
which is a variable in the QuestDemo? I have tried to manually set the tTest
to be -10, because my experiment needs half of the time 10^tTest = 0, (I am
using tTest as in log-scale, so for real value to drive the intensity of my
stimuli, I use 10^tTest. Half of the time I want to set my intensity to be
0, so I manually set tTest to be -10, or -100, etc. However, QuestUpdate
does not allow out-of-range values; it always generate the following error
message:
??? Function 'strcmp' is not defined for values of class 'struct'.
Error in ==> strcmp at 24
[varargout{1:nargout}] = builtin('strcmp', varargin{:});
Error in ==> QuestUpdate at 34
if
strcmp(oldWarning,'backtrace')
Error in ==> FindPsychmetricThreshold at 133
q=QuestUpdate(q,tTest,response);
I want to debug, but Matlab on PC with Psychtoolbox does not allow me to
debug…
Could you please help me out?
Thanks a lot for your help!
Boquan.
I am a newbie to the psychtoolbox. I have met with the following
difficulties/questions:
a) Does it support debugging in Matlab on PC? I have set breakpoints and
found breakpoints were erased by psychtoolbox and basically they have no
effects.
b) During Psychphysics experiments, I have switched back to Matlab
command line to check output results, but then how to switch back to
Psychtoolbox Screen? I was never able to switch back, every time I ended up
with kill the Matlab session.
c) In the Quest functions, do they have a valid range for “tTest”,
which is a variable in the QuestDemo? I have tried to manually set the tTest
to be -10, because my experiment needs half of the time 10^tTest = 0, (I am
using tTest as in log-scale, so for real value to drive the intensity of my
stimuli, I use 10^tTest. Half of the time I want to set my intensity to be
0, so I manually set tTest to be -10, or -100, etc. However, QuestUpdate
does not allow out-of-range values; it always generate the following error
message:
??? Function 'strcmp' is not defined for values of class 'struct'.
Error in ==> strcmp at 24
[varargout{1:nargout}] = builtin('strcmp', varargin{:});
Error in ==> QuestUpdate at 34
if
strcmp(oldWarning,'backtrace')
Error in ==> FindPsychmetricThreshold at 133
q=QuestUpdate(q,tTest,response);
I want to debug, but Matlab on PC with Psychtoolbox does not allow me to
debug…
Could you please help me out?
Thanks a lot for your help!
Boquan.