How to plot an square ?
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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.
4 个评论
Jan
2022-6-2
I do not understand what you want to achieve. "use 4 pots with arduino"? "plot 4 signals as an square"? A square is a square and you need 4 corners. How can 4 "signals" create a square?
Kenzitis KH
2022-6-2
Do you mean a square wave?
plot(square(1:100))
ylim([-2,2])
Kenzitis KH
2022-6-2
回答（1 个）
If it is 4 intersecting square waves, you could do this:
x = -10:0.001:10;
pi
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])
3 个评论
Kenzitis KH
2022-6-2
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
2022-6-2
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