Error using rf.internal.checkfreq Expected Frequencies to be nonnegative.

Hello! I am trying to run the code presented in image 1 and it appears an error. I realize it's because I can't have negative frequencies. But I don't understand why. I want to center the frequencies of the signal at zero and for that I'm looking for a way to be able to use negative frequencies. Any suggestion? Thanks

[Da Huang]

the default sparameter object does not support negative frequency value. You will have to create your own object/structure to host your data.

all snp files are expecting to have nonnegative frequency values.

Answer 1

[Anjaneyulu Bairi]

Hi,

I understand that you are trying to use negative values of frequencies in “sparameters” function from RF toolbox. This is happening because “sfrequency” value provided along with the “sparameters” function should only be positive real numbers.

You can visit the documentation below for more information:.

https://in.mathworks.com/help/rf/ref/sparameters.html

Hope it helps to resolve your query.