XCORR returns NaNs on interpolated data
3 次查看(过去 30 天)
显示 更早的评论
Hello! I have a vector A of dimension 12*1 with monthly values of temperature, and a vector B of dimension 365*1 with daily values of a physical variable. I need to calculate cross correlation between them. I try to interpolate A using interp1. However, after that when I do xcorr, it gives me an array of NaNs. What is the reason of that? Here's what I do:
AA=interp1(1:12,A, 1:365);
C=xcorr(AA,B,'coeff');
And xcorr(AA,AA) also gives me array of NaNs. How can I fix it?
0 个评论
采纳的回答
Walter Roberson
2017-11-24
When you ask interp1 to interpolate outside the original range of x, then the default value returned is NaN.
You could try
AA = interp1(1:12, A, linspace(1,12,365));
0 个评论
更多回答(0 个)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!