Machine learning program question

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Mohamed Ahmed 2016-8-2

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评论： CHANDRU G 2020-5-30

The program I'm asking my question about is in that link: http://read.pudn.com/downloads197/sourcecode/macos/928928/CancerDiagnosis.m__.htm

Now, what does this command do exactly:

testmat= matrix(idtest,:);

and why it's not giving this error:

Subscript indices must either be real positive integers or logicals.

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CHANDRU G 2020-5-30

x=x+3; data.Xval=data.Xval +3; Multiply the values in the X variable of the table letter by the aspect ratio of 1.5.Reassign the result back to X so that letter contains the corrected data

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Image Analyst 2016-8-3

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You can discover why once you look at this link. You might also like to look at the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_fix_the_error_.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22.3F

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Walter Roberson 2016-8-4

在 MATLAB Online 中打开

The original idtest is not all zero. You can use

[row, column] = find(idtest)

to see the row and column of the one (and only one) non-zero entry in it.

Mohamed Ahmed 2016-8-4

Thanks very much.

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