Jan 31, 2022 · I have an array A: A = [2; 3; 5; -8; 9; 1; -1] how do I convert it into an array whose values are all negative? So as to obtain B: A = [-2; -3; -5; -8; -9; -1; -1] Thanks!

Sep 10, 2020 · There is no non-positive indexing in Matlab. you can use x (end) for the last member, x (end-1) the member before the last member and so on. Sign in to comment. This does appear to use the same "x" on the left side and the right side, but it does not really do so.

Jan 17, 2018 · Now I am trying to set up a nested for loop to redefine negative elements in A. I need to replace negative elements in A with a zero. How do I go about doing this?

Apr 19, 2013 · If I have an array of positive and negative values, how do I only keep the positive ones, and replace the negative ones by 0?

How to change the values of an Matrix (or array) to 1 & 0 for positive & negative values in MATLAB? - YouTube. In this video it shows the code to change the values in a matrix to 1 and 0....

Jun 5, 2013 · Is there a way to quickly replace zero elements in a matrix with a input of my choice. Quickly - meaning, without a loop. The direct answer is: which does exactly what you ask for, replacing zeros with a small number. See that this does an implicit search for the zeros in a vectorized way. No loops are required.

Nov 18, 2020 · To set set negative values in a certain column of matrix "A" to 0, you can do this: For this example we assume A is a 2-D number matrix and that we are getting rid of negative values in the 2nd column.

Nov 11, 2017 · Since you can't access array elements with negative indices, you'll need to use a different variable than i to keep track of each element in x and y; this new variable should start at 1 and increment with every loop iteration.

Jan 31, 2022 · I have an array A: A = [2; 3; 5; -8; 9; 1; -1] how do I convert it into an array whose values are all negative? So as to obtain B: A = [-2; -3; -5; -8; -9; -1; -1] Thanks!

I have an array of size 401 x 381 which has positive and negative values. I would like to detect which row in each column this change of sign occurs for the purposes of comparison. If anyone has any ideas they will be appreciated.