how to obtain the mean for single variable/location of a multiple 3d .mat file ?

i have 240 files of 3dimension .mat files with 140x122x118

i have obtain the mean of these files using this method (credits to matlab community):

...
files=dir('*.mat');          
totalfile = numel(files);    
C = cell(1,totalfile);       

for a = 1:totalfile           
    T = load(files(a).name)   
    C(a) = struct2cell(T);   
end                          
M = cat(4,C{:}) 
M(isnan(M))=0               % replace NaN to 0 
ave = mean(M,4)             % mean of the 4th dimension 

however,

how do i obtain the mean of a single location/variable from all these 240 files, eg: location{100,10,50} ?

thank you

Answer 1

[Ameer Hamza]

Something like this

files=dir('*.mat');          
totalfile = numel(files);    
V = zeros(1,totalfile);       
for a = 1:totalfile           
    T = load(files(a).name)   
    C = struct2cell(T);
    V(a) = C{1}(100,10,50)
end                          
V(isnan(V))=0               % replace NaN to 0 
ave = mean(V)

[Hanisah noh]

thank you Ameer Hamza

what does {1} indicates ?

..
V(a) = C{1}(100,10,50)
..

[Ameer Hamza]

It is chained indexing in MATLAB. Normally chained indexing is not allowed in MATLAB because parenthesis are used both for functions and indexing. However, for cell arrays, chained indexing is allowed.