TASK Create a variable volumes that contains the last two columns of data. You can see the size of data in the output pane to the right of your screen.

and i wrote volumes = data(:,3:4) is still giving me error

[John D'Errico]

The line you wrote SHOULD put columns 3 and 4 into the array volumes. That it generates an error just means you did something we are not told.

When you get an error, show the ENTIRE error. Don't just tell us that something is still giving an error. We cannot see your screen, and we certainly cannot see into your computer.

Paste in the error message, the ENTIRE error message. So everything in red.

[Ninad]

Your answer is correct it worked for me

Answer 1

[Image Analyst]

Is data a 3-D array? What does this show"

whos data

If data is a 3-D array you need to do

volumes = data(:, 3:4, ;)

If data is a 2-D array, then your code would have worked.

Answer 2

[OMPRAKASH]

Create a variable volumes that contains the last two columns of data. You can see the size of data in the output pane to the right of your screen.

[Image Analyst]

volumes = squeeze(data(:, end-1:end, :));