take cells outside arrays to form new matrix

myarrays ={26*7 double} {43*7 double} .....{32*7 double} i could not get the (1,4) cell of each matrix to calculate the mean. the command i type is >>mean(myarrays{:}(1,4)), but the result have 63 output. how can i get one output of the mean from the (1,4) of all my matrix?

Answer 1

[OCDER]

mean(cellfun(@(x) x(1,4), myarrays))

[Kuang-Yu WANG]

i still have a question. if i need to get the mean of (40,4) however the cell does not exist in every matrix. i tried the scrip u send but matlab just saying "Index exceeds matrix dimensions."