summing a column of a cell array

hi,

I have a 74x74 cell array and in each cell i have stored a vector it looks like this:

i would like to sum all the vectors in colomn 1 to 74 so a new vector is created, and stored in a 1x74 cell array, i haven't succeded so i hope you could help me, thank you!

Answer 1

[Walter Roberson]

mat2cell(sum(cell2mat(fm)),1,cellfun(@(V) size(V,2), fm(:,1)))

Assumptions:

• each cell contains a row vector
• the cell can be converted to a matrix. (For example would fail for function handles)
• the elements are a datatype for which sum() is defined
• the size of each row vector is consistent for the column.

Not Assummed:

• that the elements are numeric
• that the length of the row vectors is exactly 3
• that the length of the row vectors are all the same across the columns. For example if column 2 had row vectors of length 4, then this code would be happy to give you a result in which the second entry had length 4.

[Thomas Roza]

it worked perfectly! tanks a lot!