How to plot an square ?

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Kenzitis KH
Kenzitis KH 2022-6-2
评论： Kenzitis KH 2022-6-2
Hi, do you know how to plot 4 signals as an square, I mean, every each line of a different colour creating an individual square or something like that.
I need to plot it with 4 analog inputs, on this case I'll use 4 pots with arduino... so.. anybody knows? Thank you.
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Kevin Holly
Kevin Holly 2022-6-2
Ran in:
Do you mean a square wave?
plot(square(1:100))
ylim([-2,2])
Kenzitis KH
Kenzitis KH 2022-6-2
We're talking an it seems that the sum of the 4 analog inputs by the pots, must draw a single square

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回答（1 个）

Kevin Holly
Kevin Holly 2022-6-2
编辑：Kevin Holly 2022-6-2
Ran in:
If it is 4 intersecting square waves, you could do this:
x = -10:0.001:10;
pi
ans = 3.1416
plot(x,(pi/2)*square(x))
hold on
plot(x,-(pi/2)*square(x))
plot((pi/2)*square(x)+(pi/2),x-(pi/2))
plot(-(pi/2)*square(x)+(pi/2),x-(pi/2))
ylim([-6,6])
xlim([-4,7])
Edit: Made it scatter for clarity
figure
scatter(x,(pi/2)*square(x),'.')
hold on
scatter(x,-(pi/2)*square(x),'.')
scatter((pi/2)*square(x)+(pi/2),x-(pi/2),'.')
scatter(-(pi/2)*square(x)+(pi/2),x-(pi/2),'.')
ylim([-6,6])
xlim([-4,7])
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Kevin Holly
Kevin Holly 2022-6-2
编辑：Kevin Holly 2022-6-2
Perhaps, the potentiometers would be used to adjust the frequency of 4 different sine waves that are summed together create a square wave? Example.
Kenzitis KH
Kenzitis KH 2022-6-2
Thanks 4 helping!!!
It supposed if you're summing the 4 pots, has to plot a square, plotting a square by using 4 pots.. something like that.

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