How to plot part of the data from larger data file?

I have a text file containing 5 columns and 63 rows of data. I want to extract first 21 rows of first 2 columns and plot them in matlab. How can i do it?

Answer 1

[bio lim]

A = rand(63, 5);
sub_A = A(1:21, [1 2]);

You can extract the 21 rows of the first two columns like this and proceed with your plot.

[Neha Gawande]

Thanks

Answer 2

[Walter Roberson]

The easiest way is to load all of the data and then index it to extract the portion you want.