How can I load variable mat file with similar name, modify them and save them again?

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Mariana
Mariana 2019-12-11
回答： Walter Roberson 2019-12-11
for i=1:num
v = sprintf('Following_%d',i);
l = heigth(v)
end
*I want to read the size of the table, load a column of that specific table, find values equal to 0 and save it again. The same process with multiple tables.
  1 个评论
Rik
Rik 2019-12-11
So you have some variables stored in a mat file and you want to find their sizes? Why don't you load into a struct (which you should do anyway) and loop over the fields?
And avoid numbered variables. They are a bad idea if you are going to generate variable names at runtime.

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采纳的回答

Walter Roberson
Walter Roberson 2019-12-11
filename = 'AppropriateFileNameGoesHere.mat';
ds = load(filename);
for i=1:num
fn = sprintf('Following_%d',i);
v = ds.(fn);
l = height(v);
c = v{:,appropriate_column_index};
idx = find(c == 0);
something something something
ds.(fn) = changed v;
end
save(filename, '-struct', ds)

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