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yasinieee
Turkey
1 Posts |
 Posted - 11/15/2015 : 11:58:19 AM
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Hello,
I am a new user of OriginPro. I have problem with taking multiple FFT of one column data w.r.t time. I searched on youtube tutorials and help but I could not find my problem. Lets go origin help which is http://www.originlab.com/doc/Origin-Help/Gadget-FFT
Taking FFT of Graph1 between 0-0.05 sec is working very well.
I want to take FFT of Graph between 0-0.05 sec then 0.05-0,1 sec then 0,1-0,3sec ..... (OriginPro takes FFT only one slice of time, if I want to take another FFT it redraws it and previous FFT is always gone.)
Shortly; I want to take multiple FFT with different time scales with using one column data then originpro should draw in same scale with different colors. How can I do this?
Thank you |
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jasonzhao
China
262 Posts |
Posted - 11/16/2015 : 03:36:07 AM
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Hello,
If your X column is evenly spaced, you can devide the sub range by using X index:
For example, you want to perform the data 0-0.05 sec, and assume the index range is 1:10 for both XY
You can run the LabTalk script with worksheet actived:
fft1 ix:=Col(2)[1:10];
http://www.originlab.com/doc/X-Function/ref/fft1
The results will be output to a new sheet, then you can use a loop structure to output all the results and select the column you wanted
to make a plot.
Best regards!
Jason
OriginLab Technical Service |
Edited by - jasonzhao on 11/16/2015 03:37:34 AM |
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Taking Multiple FFT