## i have a function that should work but doesn't

### Omar Almahallawy (view profile)

on 13 Jun 2019
Latest activity Commented on by Adam Danz

on 13 Jun 2019

i'm comparing two arrays and choosing the repeated numbers
and then rearranging the new output in descending order
Y1 = [0.0581 0.0424 0.0315 0.0239 0.0184 0.0143 0.0113 0.0090 0.0073 0.0059]
Z1 = [0.0090 0.0073 0.0059]
X = intersect(Z1, Y1)
Ratio = reshape(sort(X(:), 'descend'), [columns, rows])';
this is the result i get, i don't understand why
Undefined function or variable 'columns'.
Ratio = reshape(sort(X(:), 'descend'), [columns, rows])';

### Tags

on 13 Jun 2019

on 13 Jun 2019

Matlab doesn't know what "columns" means (nor "rows"). My guess is that 'columns' and 'rows' are the number of columns and rows of your reshaped data. Do you know what those values are supposed to be?
In your example data, X is a [1x3] vector. One example would be the following
Ratio = reshape(sort(X(:), 'descend'), [3, 1])';
which is the same as
Ratio = fliplr(sort(X));

Omar Almahallawy

### Omar Almahallawy (view profile)

on 13 Jun 2019
thnak you it works