Power spectrum generation from light curve

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aditi
aditi el 12 de Jul. de 2013
I have to draw a plot between frequency(x axis) and power(y axis).
Using a file with first column time, second column value for corresponding time(in counts/second)
please help me with this...
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Rednar
Rednar el 12 de Jul. de 2013
Editada: Rednar el 12 de Jul. de 2013
In which file format do you have the power spectrum info?
aditi
aditi el 12 de Jul. de 2013
i want the powe spectrum...i have only the file with first column time, second column value for corresponding time(in counts/second) which is in .dat format

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Image Analyst
Image Analyst el 12 de Jul. de 2013
Have you tried using fft() to get the spectrum of your time domain data?
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aditi
aditi el 12 de Jul. de 2013
how to use it??
Image Analyst
Image Analyst el 12 de Jul. de 2013
spectrum = fft(yourTImeDomainSignal);
More in the help and on Steve's blog: http://blogs.mathworks.com/steve/category/fourier-transforms/

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