Confirmed even in later versions, first function with built-in max() and min() applied to the Cscale is really slow.

Max() & Min() (CustomFunctions) reworked to use the numerical engine -> if used in the first function, it works fast as the robust scale.

New Max/Min solved also this issue; not sure if my previous code buggy or still matrix manipulation issues (output values of Max and Min on the canvas were ok, apparently not in the functions).

Edited by user 15 September 2016 17:37:06(UTC)  | Reason: marked as solved

Hello Jean,

The error message of SS 5346 is strange, however in 0.98 is "Requested matrix element doesn't exist"; following the latest message the error is that in the function Zoom(M, h, v) you are using local unknowns as target of the assignments inside the loops; since you are in a programming-function, and p,N,Z are not defined before the loops, if in the canvas exists a variable with the same name, this variable is used in the function and the values locally replaced (or added if the target element is outside the original sizes). In your case the issue is triggered by Z (defined in the canvas in "Zoom integer").
You can avoid the issue placing Z:0 above the loop (or Z:matrix(rows,cols) with rows and cols as non-negative integers)

Edited by user 08 March 2016 03:41:42(UTC)  | Reason: Not specified