How to Use Column Values for Plotting in Matlab?

[joanne34567]

So I have a dataset...
I am trying to use let's say values in column 1 to determine which values I need to plot from columns 5 and 6...
Reading about indexing in a matrix doesn't really help as it doesn't hint at how you might use values in one column to select values from another set of columns and I'm a bit stuck.
Any ideas?

 

[meldraft]

Plot column 1 with column 6:

plot(col(:,1),col(:,6))

Keep in mind that the two columns must have the same size.

Matlab plots columns in a 1-1 relation, so it will plot the abscissa col(1,1) with the ordinate col(1,6), then the point (col(2,1),col(2,6)), etc.