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How do you use the NaN function?

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Nicholas Deosaran
Nicholas Deosaran on 14 Sep 2020
How would write a code that for a vector that is 500 data points long, but the first 123 data points are NaN?

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Answers (1)

Abdolkarim Mohammadi-Balani
Edited: Abdolkarim Mohammadi-Balani on 14 Sep 2020
You first create the NaN vector using nan(), then fill in the elements.
V = nan (500,1);
V (124:end) = Data;

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Abdolkarim Mohammadi-Balani
The first line create the NaN vector and the second line fills it with your data. You may feel more comfortable with this syntax:
V (1:123) = NaN;
Nicholas Deosaran
Nicholas Deosaran on 14 Sep 2020
I am still not understanding
the code will be like
v = (500,1)
data = (1:123)=nan
is that right or no?
Abdolkarim Mohammadi-Balani
No. If you have your vector of values for 125 to 500 and you want to transfer them to the new vector, then you should use:
V = nan (500,1);
V (124:end) = Data;
Otherwise, if you have a 500 element vector and you want to eliminate the first 125 elements, then you can do it in one command (not the one you mentinoed):
Data (1:123) = NaN;

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