help on if statement

How can I use a if loop to display where X4(n,1)>X4(n,2)>X4(n,3)>X4(n,4)>X4(n,5) == 1 n = 1:31 I want it to show where this is true in the matrix or should i use a while loop?

[Walter Roberson]

There is no such thing as an if loop.

Answer 1

[Honglei Chen]

You can vectorize this in one command:

idx = 1:31;
find( (X4(idx,1)>X4(idx,2))&(X4(idx,2)>X4(idx,3))&(X4(idx,3)>X4(idx,4))&(X4(idx,4)>X4(idx,5))&(X4(idx,5)==1))

HTH

[Abra dog]

It says Empty matrix: 0-by-1

[Abra dog]

Never mind found out what i was doing wrong with your command. I don't need to put ==1 at the end. Thank you