MATLAB: How to rearrange this dataset

Question

Hello,

I would like to make a contour plot (i.e., contourf(x,y,z)), where x is year-day, y is depth, and z is data). However, the shape of my dataset currently looks like:

x y z

21 0 0.1

21 10 0.23

21 20 0.32

22 0 0.31

22 10 0.14

22 20 0.42

23 0 0.23

23 10 0.43

23 20 0.38

I understand that to make a contour plot, z should be looking like this:

0.1 0.31 0.23

0.23 0.14 0.43

0.32 0.42 0.38

How to arrange data like above one? Or is there any other way to make a contour plot with what I have?

Thanks

Answer 1

There may have been slicker ways to do this further "upstream" in your code, but now you could just do

>> z = reshape(z,3,3);