how to read data from characters?

Hi all,

I am trying to read the variables from the list of characters those are saved as .mat file 'attached screenshot.' each of those .mat file has sst, lat, lon. I could not find a proper way to get the data by using the for loop.

for N = 1:nfiles;
    filename = [flist(N).name];
    disp(['Processing ', flist(N).name]);
end

Any help will be appreciated :(

thanks

[Stephen23]

Note that square brackets are a concatenation operator in MATLAB, so they are completely redundent on this line (you are not concatenating anything):

filename = [flist(N).name];

https://www.mathworks.com/matlabcentral/answers/35676-why-not-use-square-brackets

Answer 1

[Stephen23]

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

D = 'path of the directory where those files are saved';
S = dir(fullfile(D,'erdMH*.mat'));
for k = 1:numel(S)
    T = load(fullfile(D,S(k).name));
    S(k).lat = T.lat;
    S(k).lon = T.lon;
    S(k).sst = T.sst;
end

If the imported data have compatible sizes you could concatenate them into arrays, e.g.:

lat = [S.lat]
lon = [S.lon]

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists

[Lilya]

Thank you so so so much!! :')

[Lilya]

i just have one question, I want the final sst matrix separated. as i get it as an accumulative meaning:

1*458*289 insted of 1*23385*289

Thanks in advance

[Stephen23]

"I want the final sst matrix separated"

I do not know what a "separated" matrix is. You can access the imported sst arrays:

• directly from the non-scalar structure S, or
• concatenating together (as I showed in my answer), or
• by putting them into a cell array:

C = {S.sst}

[Lilya]

Thanks a lot !!! it works