Can I divide a linear array by a number which larger than its size ?

1 view (last 30 days)
I am having a cell array. Each element of the cell array is a linear array . These arrays are of different sizes. when diving each array to some equal parts then I am not getting consistent parts. Suppose I want to divide each cell array by 20. When the size is greater than 20 then its ok. but when less than 20 then I am not getting any consistent parts. I want to divide each linear array to 20 equal parts. whatever the size is I dont want any padding of values. If the array size is 1×17 and diving with 20 will give 20 equal parts . The partition size will be less than 1. How can I do this ?
  2 Comments
Image Analyst
Image Analyst on 16 Mar 2019
Unless you want to do some interpolation/resizing, you can't because each array in each cell is not a multiple of 20.

Sign in to comment.

Answers (2)

KSSV
KSSV on 16 Mar 2019
You interpolate your data into your desired size and then reshape. Read about interp1.
  1 Comment
Zara Khan
Zara Khan on 16 Mar 2019
how can I handle an entire cell array with this ? Suppose my first cell contains an array of size 1×17, diving with 20 will give a size of 0.85. Is this possible to do here ? Next cell contains 1×31 , diving with 20 again, next cell is 1×131 again diving with 20. Cell array contains 16 colums and 1000 rows . How can I loop over this process? Please help.

Sign in to comment.


Walter Roberson
Walter Roberson on 16 Mar 2019
Next20 = @(V) ceil(length(V)/20) * 20;
Interp20 = @(V) interp1(V, linspace(1, length(V), Next20(V)));
Split20 = @(V) mat2cell(V, 1, 20*ones(1, length(V)/20));
new_cell = cellfun( @(V) Split20(Interp20(V)), cell_array, 'Uniform', 0);
  8 Comments

Sign in to comment.

Categories

Find more on Resizing and Reshaping Matrices in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!