MATLAB: Converting cell array to matrix

cell arraycell2matcoordinates

Hi,

I have a 1×650 cell array (centroid1) which contains two values, an x and y coordinate in a (1,2) matrix. How do I convert this cell array into a (:,2) matrix containing the relevant coordinates in each row?

Below is my attempt, but this converts the cell array wih just 1 row.

coord = cell2mat(centroid1)

Thanks

Best Answer

Use vertcat()

coord = vertcat(centroid1{:})

following should also work

coord = cell2mat(centroid1.')

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NewCellArray = vertcat( ExistingCellArray{:} );

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In one line using num2cell, cellfun, and vertcat:

>> C1 = cell(2,2,3); % preallocate cell array.
>> C1(:) = cellfun(@(~)rand(180,1),C1,'uni',0); % fake data.
>> C2 = cellfun(@(c)vertcat(c{:}),num2cell(C1,3),'uni',0);

And checking the first element of C2:

>> size(C2)
ans =
   2   2
>> size(C2{1})
ans =
   540     1
>> isequal(C2{1},vertcat(C1{1,1,:}))
ans = 1

Best Answer

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