To group the matrix based on the number on their column (of non-zeros)

I have a matrix below;-

Matr =
     0     0
     0     0
     1     0
     0     0
     2     0
     0     1
     1     1
     0     1

How can I group them based on their number of cloumn? Starts from 1st row to 7th row

I want the result to be....

group1=[3 1     %they are in the 1st row
        5 1
        7 1]
    
group2= [6 2
         7 2]   %they are in the 2nd row

Answer 1

[Guillaume]

[row, column] = find(Matr);
groups = splitapply(@(rows, columns) {[rows, columns]}, row, column, column)

[fyza affandi]

Undefined function or variable 'splitapply'.

I cant use this function.

[Guillaume]

Which version of matlab are you using? splitapply requires R2015b or later.

The same, using accumarray (available in all versions):

[row, column] = find(Matr);
groups = accumarray(column, find(column), [], @(idx) {[row(idx), column(idx)]})

[fyza affandi]

im using R2015a

[fyza affandi]

I get this answer

groups = 

    [3x2 double]
    [3x2 double]

[Guillaume]

celldisp(groups)

To see the content of the cell array, which is exactly what you asked for.