How to Modify Entries in Cell

Hello,

I would greatly appreciate any/all help with this issue:

I have a 18 x 1 cell array. Each cell in this array contains an (1024 x 1024 x 50 , value = double) matrix. Thus, there are a total of 18 of these matrices, each one stored in a separate cell.

I would like to modify each of the matrices by cutting out the last 2 "frames" --> producing a total of 18 (1024 x 1024 x 48) matrices, each one stored in a separate cell.

Please help! Thanks :)

Answer 1

[James Tursa]

result = cellfun(@(x)x(:,:,1:end-2),your_cell_array,'uni',false);

[itend]

Fantastic!

Many thanks :)

Quick question, what is the @(x)x doing within the context of this line of code? I can understand the rest of it.

[James Tursa]

@(x)x(:,:,1:end-2) creates an anonymous function on the fly. It takes an input x and returns a truncated version of x with the last two pages removed. E.g.,

>> y = reshape(1:24,2,3,4)
y(:,:,1) =
     1     3     5
     2     4     6
y(:,:,2) =
     7     9    11
     8    10    12
y(:,:,3) =
    13    15    17
    14    16    18
y(:,:,4) =
    19    21    23
    20    22    24
>> f = @(x)x(:,:,1:end-2)
f = 
    @(x)x(:,:,1:end-2)
>> f(y)
ans(:,:,1) =
     1     3     5
     2     4     6
ans(:,:,2) =
     7     9    11
     8    10    12