Error using hilbert transform: "Subscript indices must either be real positive integers or logicals."

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F Z 2015-10-2

编辑： Stephen23 2015-10-3

Hello,

I have some troubles using hilbert transform for the enclosed vector in a guide.

The used command is:

y=abs(hilbert(A))/max(abs(hilbert(A)))

but Matlab sends the following error: "Subscript indices must either be real positive integers or logicals."

I can't understand why am i getting this error because i have already used this command in a former program successfully.

Any ideas please?

Walter Roberson 2015-10-2

You accidentally assigned to a variable named "hilbert", which has the effect of overriding the meaning of hilbert() as a routine.

Muthu Annamalai 2015-10-2

Very prescient @Walter!

Walter Roberson 2015-10-2

We see this all the time. If it had been a case where the toolbox was not installed then the message would be about unknown variable or function.

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