Centre and scale x data
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I have to fit a curve for a custom equation with the curve obtained from my data. How can I centre and scale x data in this case?
3 个评论
José-Luis
2014-6-4
Centre around what? Scale to what?
Image Analyst
2014-6-4
Your question is vague. Attaching a screenshot would help.
Sivakandan Mani
2020-12-3
Hi Jose-Luis,
I have 30 days of data with 1 hour time resolution, now I want centre for 5 days then do FFT. How to do that in matlab?
could you kindly suggest me the step, which need to be followed?
Thanks and regards,
Siva
回答（1 个）
Star Strider
2014-6-4
You could always use the Z-score. It centers about the mean and scales by the number of standard deviations:
x = 10+50*randn(5,1); % Create data
Zsc = @(x) (x - mean(x))./std(x); % Z-score function
Zx = Zsc(x) % Z-scores of ‘x’
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2014-6-4
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