Need help with subplot
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Instructions:
Create a MATLAB function called plot05 that generates a 3x1 matrix of subplots, where yi = sin(x*i*π) appears in the ith subplot and i = 1, 2, 3. Define the length of the guitar string to be an array of 100 equally spaced values over the interval [0, 1]. Plot the first harmonic in subplot 1 and set the linewidth property to 1. Plot the second harmonic in subplot 2 and set the linewidth property to 2. And plot the third harmonic in subplot 3 and set the linewidth property to 3.
so i need to create a subplot that looks like this:
but my graph is way off--what is wrong with my code?
function [y] = plot05(x,i)
x= 0:.01:1
i= [ 1 2 3]
y = sin (x.' * i .* pi)
hold on
x = 0:.01:1;
subplot(3,3,1);
linewidth = 1;
plot(x,y,'LineWidth',linewidth)
hold off
hold on
x = 0:0.01:1;
subplot(3,3,4);
linewidth = 2;
plot(x,y,'LineWidth',linewidth)
hold off
hold on
x = 0:0.01:1;
subplot(3,3,7);
linewidth = 3;
plot(x,y,'LineWidth',linewidth)
hold off
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Accepted Answer
Matt Fig
on 15 Oct 2012
Edited: Matt Fig
on 15 Oct 2012
x = 0:.01:pi;
subplot(3,1,1)
plot(x,sin(x))
subplot(3,1,2)
plot(x,sin(x*3))
subplot(3,1,3)
plot(x,sin(x*6))
Think of the arguments to SUBPLOT as setting up a grid. You want a 3-by-1 grid, so the first two arguments to subplot should be 3,1. The third argument is which of the axes on that grid you want to create. So when you say subplot(3,1,3) you are asking subplot to create the third axes on a 3-by-1 grid. This lets you do neat things like this:
x = 0:.01:pi;
subplot(3,1,1)
plot(x,sin(x))
subplot(3,1,2)
plot(x,sin(x*pi))
subplot(3,2,5)
plot(x,sin(x*2*pi))
subplot(3,2,6)
plot(x,sin(x*3*pi))
More Answers (2)
Wayne King
on 15 Oct 2012
Edited: Wayne King
on 15 Oct 2012
Because you want
subplot(3,1,1)
subplot(3,1,2)
and not
subplot(3,3, ...)
subplot(3,3, ) means 3 rows and 3 columns, you just want 3 rows and 1 column
0 Comments
Image Analyst
on 15 Oct 2012
Try this:
x= 0:.01:1
i= [ 1 2 3]
y = sin (x.' * i .* pi)
hold on
x = 0:.01:1;
subplot(3,3,1:3);
linewidth = 1;
plot(x,y,'LineWidth',linewidth)
x = 0:0.01:1;
subplot(3,3,4:6);
linewidth = 2;
plot(x,y,'LineWidth',linewidth)
x = 0:0.01:1;
subplot(3,3,7:9);
linewidth = 3;
plot(x,y,'LineWidth',linewidth)
% Enlarge figure to full screen.
set(gcf, 'units','normalized','outerposition',[0 0 1 1]);
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