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NRAO Home > CASA > CASA Toolkit Reference Manual |
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sd.scantable.fft - Function
5.1.2 Apply FFT to the spectra
Description
Apply FFT to the spectra.
Flagged data in the scantable get interpolated over the region. An optional channel mask specified by mask parameter is applied to all specified rows if it is given as one dimensional array.
It returns a list of dictionaries containing the results for each spectrum. Each dictionary contains two values, the real and the imaginary parts when getrealimag = True, or the amplitude(absolute value) and the phase(argument) when getrealimag = False. The key for these values are ’real’ and ’imag’, or ’ampl’ and ’phase’, respectively.
Arguments
Inputs |
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rowno |
| Row number(s) to be processed.
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| allowed: | integet, integer list or tuple |
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| Default: | [] (apply to whole data) |
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mask |
| An optional channel mask
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| allowed: | bool array |
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| Default: | [] |
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getrealimag |
| If True, return real and imaginary part instead of
amplitude and phase
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| allowed: | bool |
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| Default: | False (return amplitude and phase) |
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dictionary
Example
More information about CASA may be found at the
CASA web page
Copyright © 2016 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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