Can I insert columns into imported data

I am importing data from an excel file and would like to subtract sequential rows or columns (for example) Can I do this?

Answer 1

[Isabella Osetinsky-Tzidaki]

use diff function, see its help page for right formulation

Answer 2

[Walter Roberson]

You can use {} notation using : (colon) for the row numbers and using numeric values for column numbers. You can even

diff(YourTable{:, :}, [], 2)

to find the difference between adjacent columns.

What I do not know at the moment is whether there is a nice way to rearrange columns. You can probably use

YourTable(:, [3 1 4 2])

for example to rearrange columns including header.