How do you use the NaN function?

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Nicholas Deosaran
Nicholas Deosaran 2020-9-14
评论： Abdolkarim Mohammadi 2020-9-14
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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回答（1 个）

Abdolkarim Mohammadi
编辑：Abdolkarim Mohammadi 2020-9-14
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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Nicholas Deosaran
Nicholas Deosaran 2020-9-14
I am still not understanding
the code will be like
v = (500,1)
data = (1:123)=nan
is that right or no?
Abdolkarim Mohammadi
Abdolkarim Mohammadi 2020-9-14
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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