How should I solve "ranges for MatFile objects must increase in equally spaced intervals"?

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Xiaoliang Tang
Xiaoliang Tang 2017-8-26
回答： Image Analyst 2017-8-26
I want to read some specific rows from a large data file (a large matrix in .mat format). The codes are as follows
m = matfile('data_file.mat'); % a N*D matrix data is stored in 'data_file.mat'
xx = m.data([1,3,4,6,9],:);
The error alert is "Cannot index into 'data' because ranges for MatFile objects must increase in equally spaced intervals". Is there any solution to this problem?

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回答（1 个）

Image Analyst
Image Analyst 2017-8-26
You forgot to attach your .mat file so we can't try your code. But try breaking it up into two lines
% Extract 2-D matrix into xx
xx = m.data;
% Now extract only specified rows.
xx = xx([1,3,4,6,9],:);

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