summing element is a cell

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Esegboria Osarhemen
Esegboria Osarhemen il 5 Mar 2019
Commentato: Jos (10584) il 8 Mar 2019
I have a 1x50 cell 'c', where each element in the cell is a nxn matrix, how can I sum all 50 matrices (c{1}+c{2}+c{3}+.....c{50}) without a loop?
  1 Commento
Jos (10584)
Jos (10584) il 8 Mar 2019
"without a loop". Why?
Loops are efficient and easy and sometime the best option :-)

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Risposte (1)

Stephen23
Stephen23 il 5 Mar 2019
sum(cat(3,c{:}),3)
  2 Commenti
Esegboria Osarhemen
Esegboria Osarhemen il 5 Mar 2019
Modificato: Esegboria Osarhemen il 5 Mar 2019
I get this error
Error using cat
Dimension for sparse matrix concatenation must be <= 2.
Stephen23
Stephen23 il 6 Mar 2019
Modificato: Stephen23 il 8 Mar 2019
Either:
  1. convert the sparse matrices to full matrices and use the answer I gave you, or
  2. mess around with cat and reshape and permute and sum, or
  3. use a loop.

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