Subplot in loop just plotting the first y value?
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for n=[2:5]
for c=[10,20,40,80]
figure(1)
subplot(1,4,n-1)
x=linspace(0,2*pi,c);
y=atan(x)
plot(y)
end
end
This loop creates four subloops in one window, so far so good. But spent the last eternity trying to get Matlab to plot four different y values, not just four copies of the first.
Pic:
3 个评论
Adam
2016-9-6
You are calling the plot command 16 times there, in 4 bunches of 4, but the last of each 4 calls is always the same ( c == 80 ) so I'm not quite sure what you are trying to do with the double loops
Stephen23
2016-9-6
This is a good example of why bad code formatting makes it hard to write good code: there are actually two loops, and this is the cause of the problem... however the nested loop is not clear because if the lack of indentation.
Use clear, consistent formatting and it makes writing, reading, and understanding code one million times easier. MATLAB's default formatting is usually perfect, so just use that. TIP: select all of the code and click ctrl+i.
Marcus Silverberg
2016-9-6
采纳的回答
Try this. I haven't tested it, just changed it off the top of my head, but the idea is what you want even if there are a couple of things you need to fix in the code - i.e. get rid of the nested loops and just index into c so that you do 4 different plots.
c=[10,20,40,80]
for n=1:4
figure(1)
subplot(1,4,n)
x=linspace(0,2*pi,c(n));
y=atan(x);
plot(y)
end
Edit: I have tested now after a couple of fixes to my original and this seems to work.
更多回答（1 个）
Mischa Kim
2016-9-6
Marcus, add a
hold on
after the plot command.
2 个评论
Marcus Silverberg
2016-9-6
Thanks, that helped a bit. But now I got all the four values in each of the subplots.. The point is to get c=10 in the first subplot, c=20 in the second..etc.
Mischa Kim
2016-9-6
Not quite sure, what you are trying to achieve. If it is only one plot per subplot, why not use indexing?
c = [10,20,40,80];
for n = 1:4
subplot(1,4,n)
x = linspace(0,2*pi,c(n));
y = atan(x);
plot(y,'*')
end
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