How to limit number of repetition

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Davide Frattini
Davide Frattini 2022-2-22
编辑： Jan 2022-2-22
I would need to run this code a specific number of time only (lets say n=30) and at the 30th times the user press on the keyboard, the program stops and creare a text file with the "fr" value reached at the 30th trial.
Here is my code so far:
global p
esc=0;
fr = 20;
while esc ~= 27
d.write(NISignal(fr))
esc = double(p);
if p == '1'
fr = fr+1;
else
fr = fr-2;
end
end
function s = NISignal(freq)
global nxsec dur p
s = 2.6 + 1/4.5*cos(linspace(pi,(2*pi*freq*dur)+pi,nxsec*dur)');
plot(s);
text(1000,6.7,string(freq))
if waitforbuttonpress
p = get(gcf, 'CurrentCharacter');
end

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采纳的回答

Jan
Jan 2022-2-22
编辑：Jan 2022-2-22
Add a counter:
esc = 0;
num = 0;
while esc ~= 27 && num < 30
...
num = num + 1;
end
if num == 30
...save your file
end
By the way, communicating through global variables is a really bad design. Prefer to provide the p value as another output argument.

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