Change Variable Value at each Iteration Based on Value in Array

Hi all!

I'm currently reading through ten .nc files. I am interested in looking at a particular variable contained within each file, and this variable is of size 1x4 (lat, lon, level, timestep). I have created a for-loop to read through each of my files (which I have compiled in a folder), and the results of my for-loop lead to a 15X15 matrix for each of my ten files (so I end up with a three-dimensional output, which is of size 15x15x10).

However, I just realized that each of my files has a different timestep of interest. In other words, I need to change the value of the timestep each time I go through the for-loop to a value contained in my array, b. Luckily, my files are neatly organized in a folder and correspond numerically to my array, b. So, if I'm reading through the first file in my folder, the first row in array b will tell me which timestep I must use as I read my variable.

I have tried creating a separate for-loop for the values found within my array b, and then plugging that in to the code I have below, but I have been unsuccesful in computing the actual results. Any tips/pointers/suggestions? Thanks in advance! Here's what I'm currently working with...

b = [1; 3; 4; 2; 1; 1; 1; 4; 2; 2]
Folder = 'C:\my\folder\here'
FileList = dir(fullfile(Folder, '*.nc'))
t = zeros(15,15,numel(FileList))
for iFile = 1:numel(FileList)
    iFile
    name = fullfile(FileList(iFile).folder, FileList(iFile).name)
    level = ncread(name, 'level')
    for i = 1:numel(level)
        i
        t(i,:,iFile) = ncread(name, 'T', [548, 130, i, b], [1, 15, 1, 1])
        end
    end
end

Answer 1

[Michelle De Luna]

After a couple of days, I got the (as expected, pretty easy) solution: if the size of my array is the same length of the files in my folder...

b = [1; 3; 4; 2; 1; 1; 1; 4; 2; 2]
Folder = 'C:\my\folder\here'
FileList = dir(fullfile(Folder, '*.nc'))
t = zeros(15,15,numel(FileList))
for iFile = 1:numel(FileList)
    iFile
    name = fullfile(FileList(iFile).folder, FileList(iFile).name)
    level = ncread(name, 'level')
    for i = 1:numel(level)
        i
        t(i,:,iFile) = ncread(name, 'T', [548, 130, i, b(iFile)], [1, 15, 1, 1])
        end
    end
end