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Subtract 1 from variable each second

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Martin
Martin il 10 Giu 2021
Commentato: Jan il 10 Giu 2021
Imagine I got something like this:
counter = 100;
while true
do_something=true;
pause(rand);
disp(counter);
end
Then I need the counter variable to get subtracted by 1 each second inside the while loop. Any suggestions?

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Jan
Jan il 10 Giu 2021
counter = 100;
TimerH = timer('TimerFcn', @doCount, 'ExecutionMode', 'fixedRate', ...
'Period', 1.0, 'UserData', counter);
start(TimerH);
while true
do_something=true;
pause(rand);
counter = TimerH.UserData;
disp(counter);
end
delete(TimerH);
function doCount(TimerH, EventData)
TimerH.UserData = TimerH.UserData - 1;
end
Do you really need an active counter?
iniTime = clock;
while true
do_something=true;
pause(rand);
counter = 100 - etime(clock, iniTime);
disp(counter);
end
  3 Commenti
Martin
Martin il 10 Giu 2021
me2, thanks!
Jan
Jan il 10 Giu 2021
@Mathieu NOE: And it even counts backwards from 100 for 3 weeks. :-)

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Più risposte (1)

Mathieu NOE
Mathieu NOE il 10 Giu 2021
hi
nothing fancy
counter = 100;
while true
do_something=true;
counter = counter -1; % decrement counter
pause(1); % 1 second pause
disp(counter);
end
  3 Commenti
Mathieu NOE
Mathieu NOE il 10 Giu 2021
so how do you plan to get the counter decremented every second ??
Martin
Martin il 10 Giu 2021
Modificato: Martin il 10 Giu 2021
yeah thats my question :) I guess I need to use
now
(before the loop) and also indside the loop, but I have hard times figure it out which is why I am asking

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