Extracting parts of matrix for sub matrices

Question

Akila Udage 2020-4-6

关闭： MATLAB Answer Bot 2021-8-20

I have 128 by 128 matrix. I want to extract 16 by 16 matrices from seperately.

it sould be like 1-16 colums with 1-16 rows and then 1-16 columns with 17-32 rows and so on for all 128 by 128 matrix. (using a loop)

i was thinking of a loop to get this done

k=15;

for i = 1:16:128

for j= 1:16:128

newsubMat = myMat(i:i+k,j:j+k);

UnifomityCalc = (max(max(newsubMat)))/(min(min(newsubMat))); % calculation for uniformity

newsubMat_UniformityVector(i,j) = UnifomityCalc; %trying to saving it for 8 by 8 matrix

Can you please help me with this?

此问题已关闭。

Answer 1

James Tursa 2020-4-6

E.g., to put them into a cell array

mat = your matrix
result = mat2cell(mat,repmat(16,8,1),repmat(16,8,1));

Akila Udage 2020-4-6

编辑：Akila Udage 2020-4-6

i was thinking of a loop to get this done

for i = 1:16:128

for j= 1:16:128

newsubMat = myMat(i:i+15,j:j+15);

UnifomityCalc = (max(max(newsubMat)))/(min(min(newsubMat))); % calculation for uniformity

newsubMat_UniformityVector(i,j) = UnifomityCalc; %trying to saving it for 8 by 8 matrix

can you pleas explain this ?