Trying to index into a cell array using columns of a matrix

I am trying to use two columns in a matrix to index into a cell array.

I am trying to use the 2nd column of the matrix to index into the first layer of the cell array, and the 1st column to index into the 2nd layer of the cell array.

For example, if a given row in the two-column matrix looks like this:

[2 1] ---- ("2" corresponds to the value in the first column, "1" corresponds to the value in the 2nd column)

I want to index into the cell array as such:

Cell_array{1}{2}

I want to index into the cell array using every single row of the two-column matrix. Every time these values match, I want to extract the data from the cell array.

Any help would be appreciated! Thank you. I hope this makes sense..

[dpb]

Matlab doesn't support such syntax as Cell_array{1}{2}, you can only dereference a cell with the curlies and then index into the result if it is an array with parentheses such as Cell_array{1}(2)

Attach an example of your cell array for us to poke at...

[Michael Bochert]

I have been able to index into it using curly braces twice.. Here is the .mat file :)

Thx for your help!

[Dyuman Joshi]

"Matlab doesn't support such syntax as Cell_array{1}{2}"

@dpb, It does -

C = {{1 [2 3]}}

C = 1×1 cell array
    {1×2 cell}

C{1}{2}

ans = 1×2

2 3

Answer 1

[Matt J]

I am trying to use two columns in a matrix

Call this matrix I.

to index into a cell array.

Call it C.

Then you could do,

arrayfun(@(i,j) C{j}{i}, I(:,1), I(:,2),'uni',0)

[Michael Bochert]

Beautiful!! Worked like a charm. :)

Thank you so much!