plotting an array skipping some columns

I have a matrix T(x,t) = T(position, time), The final matrix comes as 101x1000 , I don't want to plot for all 1000 columns, I want to skip 20 cols in the plot!

Can anyone suggest me something! Thanks

clc 
clear all; 

%-----------------------------Input---------------------------------------- 




%-----------------------------Plot----------------------------------------- 

figure 
plot(x,T)
title('1')

Thanks

Answer 1

[Aquatris]

If you know which columns you want;

desiredColumnIndex = [1 23 35 67 70 83];
plot(x,T(:,desiredColumnIndex))

If you want every 20th column;

plot(x,T(:,1:20:end))