Why am I getting the error, "Array indices must be positive integers or logical values."

slice=1;
squeeze(vxtmp(:,slice,:))=squeeze(vx(:,slice,:)).*squeeze(magmask(:,slice,:)).*(1-squeeze(BVM(:,slice,:)));

Answer 1

[Jan]

What is "squeeze"? Did you shadow the function by defining it as variable?

The left hand side of an assignment cannot be a function. So the squeeze on the left creates a variable, such that following executions do not use the function "squeeze" anymore, but the array created before.

I assume, you can fix and simplify your code by:

vxtmp(:,slice,:) = vx(:,slice,:)) .* magmask(:,slice,:) .* (1 - BVM(:,slice,:));

[Gabriel Fuhrman]

The error was the function on the left side. Thank you!

Answer 2

[Image Analyst]

It's thoroughly explained in the FAQ:

https://matlab.fandom.com/wiki/FAQ#.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22