Extract a range of frequencies from a vector/array

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Sibghat
Sibghat 2022-9-27
编辑： Sibghat 2022-9-27
Ran in:
Hello,
I hope you are in good health.
I am trying to select a range of frequencies from the given data set.
load phaseNoise.mat
plot(fnew,pnew)
new_value_from_fnew = fnew(fnew = 10e+009 | fnew <= 30e+009);
Unable to use a value of type string as an index.
However, I get an error when I try to set the initial and final value saying that 'Unable to use a value of type string as an index.'. I have tried changing the data type as well but didn't work either.
Basically, I want to only select the frequencies from 10GHz to 30GHz and discard the rest of the values so I can display the graph from 10GHz to 30GHz and perform further analysis on the given range only.
Any help will be appreciated.
BR.

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采纳的回答

KSSV
KSSV 2022-9-27
new_value_from_fnew = fnew(fnew == 10e+009 | fnew > 30e+009); % <--- replace = with ==

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