How do I assign a matrix column as my x or y values so that can plot them?

I'm not having any errors I just honestly don't know the commands. Thanks!

Answer 1

[Walter Roberson]

x = YourMatrix(:, TheColumnNumber);

For example,

data = rand(64, 15);
x = data(:,11);   %column 11
y = data(:,3);
plot(x,y);

Answer 2

[Ahmed A. Selman]

Use the basic matrix notation, the colon operator is very helpful in such cases. Example:

 y=magic(5)
    y =
      17    24     1     8    15
      23     5     7    14    16
       4     6    13    20    22
      10    12    19    21     3
      11    18    25     2     9

To plot the first row only:

   plot(y(1,:))

To plot rows from the first to the third:

   plot(y(1:3,:))

To plot columns 1 and 4:

    plot(y(:,[1,4])) ... etc.

If you want to plot x and y axes specifically, use plot(x,y). As in:

x=-pi:0.1:pi;
y=sin(x);
plot(y) % this plots from 0 to 2 pi on the x-axis
plot(x,y) % this plots from -pi to pi.. etc.