Is there a way to continue operation during input()?

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Bohan Yao
Bohan Yao il 16 Ago 2019
Risposto: per isakson il 18 Ago 2019
So what I'm essentially trying to do is, I have a switch statement in a while loop. Using an input() function, MATLAB will take the user input and put it through the switch cases. Pretty simple. But now, I want to modify it such that if MATLAB does not receive a command during input() for X number of seconds, it will continue the code, instead of waiting for user input. Ineveitably, it will go to the default switch case becuase a null input will not match any of the cases, and then the while loop will take me back to input(). So is there a way to "unpause" the code during input() automatically without me having to press ENTER?
  2 Commenti
Stephen23
Stephen23 il 16 Ago 2019
Modificato: Stephen23 il 18 Ago 2019
Your best choice is to write a GUI: a well-designed GUI is anyway a much better user-interface than input.
Bohan Yao
Bohan Yao il 16 Ago 2019
I agree, however, I am working with someone else's code, which they have already developed extensively. Implmenting a GUI would require a lot more work than is worth it. Is there another way to do this with just input()? If there truly is no other way to do it, then I guess I have no choiec but to create a GUI.

Accedi per commentare.

Risposte (2)

Walter Roberson
Walter Roberson il 18 Ago 2019
https://www.mathworks.com/matlabcentral/fileexchange/8297-getkeywait
The below two mostly rely on Psychtoolbox
https://www.mathworks.com/matlabcentral/answers/310311-how-to-get-psychtoolbox-to-wait-for-keypress-but-move-on-if-it-hasn-t-recieved-one-in-a-set-time
https://www.mathworks.com/matlabcentral/answers/143088-real-time-detect-keypress

per isakson
per isakson il 18 Ago 2019
Something like
%% a script named cssm.m
while true
user_input = waitinput( 'prompt: ', 5, 's' );
if isnan( user_input )
user_input = 'default';
disp(' ')
end
switch user_input
case 'default'
disp('default')
case 'poi'
disp('poi')
case 'abc'
disp('abc')
case 'quit'
disp('good bye')
break
otherwise
error('failure')
end
end
might do the trick. That is to say waitinput by Grzegorz Knor does the trick.
And a little test
>> cssm
prompt:
default
prompt:
default
prompt: poi
poi
prompt:
default
prompt: quit
good bye

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