Saving a table-type variable to MAT file column by column in For-loop

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Smithy
Smithy le 11 Août 2022
Commenté : Smithy le 12 Août 2022
Hello everybody,
I have big size of a table-type variable.
I am trying to save a table-type variable to .mat file column by column as table type in in For-loop.
I tried below code but it is not table and VariableNames disappear.
Is there a way to save .mat file as table type?
var = [num2cell(rand(4,3)), {'Steve';'John';'Paul';'Evan'}];
A = splitvars(table(var));
A.Properties.VariableNames = ["Aa","Bb","Cc","Dd"];
for i = 1:width(A)
colData = A.(i); % this case colData is not table type and column name disappear.
save([pwd,'\AA_' num2str(i) '.mat'],'colData')
end

Réponse acceptée

Walter Roberson
Walter Roberson le 11 Août 2022
outdir = pwd();
var = [num2cell(rand(4,3)), {'Steve';'John';'Paul';'Evan'}];
A = splitvars(table(var));
A.Properties.VariableNames = ["Aa","Bb","Cc","Dd"];
for i = 1:width(A)
clear S
thisvar = A.Properties.VariableNames{i};
S.(thisvar) = A(:,i);
save( fullfile(outdir, "AA_" + i + ".mat"), '-struct', 'S')
end
!ls
AA_1.mat AA_2.mat AA_3.mat AA_4.mat
whos -file AA_1.mat
Name Size Bytes Class Attributes Aa - 1427 table
  1 commentaire
Smithy
Smithy le 12 Août 2022
Thank you very much for your huge helps. It works very well.

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