how extract the data from 4D matrix and plot ?

Hi All: I have a 4D matrix of 128*6*3*352. i need to extract: maymatirx(:,1,1,352) and plot this. I tried to use the general command like below plot(maymatirx(:,1,1,352))

however it does not work. is there any other way to do this thanks in advance

Answer 1

[KL]

What do you mean by it does not work?? Are you getting an error? Are you not getting the expected result?

See this example below.

 >> a = rand(128,6,3,352);
 >> plot(a(:,1,1,352))

This is gives me the plot it's supposed to give.

Probably you might want to open a new figure window to make sure it is plotted on the fresh window, to do that,

 figure
 plot(a(:,1,1,352))

if it still "does not work", try,

 data = a(:,1,1,352);
 whos data

now you'll be able to see the properties of the extracted data.

[Duminda Vidana Gamage]

Hi KL. I'm getting an error message as below when i tried to plot - mymatrix(:,1,1,:) the one i was giving in the first example has to be corrected as maymatirx(:,1,1,:).

Thanks Duminda

"Error using plot. Data may not have more than 2 Dimensions".

[KL]

There's a huge difference between writing mymatrix(:,1,1,352) and mymatrix(:,1,1,:), anyway, try this,

 data = squeeze(mymatrix(:,1,1,:));

now data should be 128x352 matrix. It's upto you how you want to plot it.

[Duminda Vidana Gamage]

Hi KL Thanks. it worked now

[Gianmarco Venditti]

It doesn't "work" if the argument is third or fourth...

plot(X(1,1,:),Y(1,1,:),'o')

Error using plot

Data cannot have more than 2 dimensions.

The solution "works" only for the first 2 dimension i.e. is not robust at all