Opened 19 years ago

Closed 15 years ago

#46 closed enhancement (fixed)

Requirement 6.7-13 FFT spectra

Reported by: Chris Phillips Owned by: Malte Marquarding
Priority: normal Milestone: ASAP 2.4
Component: General Version: 2.0
Severity: normal Keywords:
Cc: chris.phillips@…

Description

A method to FFT spectra is needed. The FFT spectrum should be plottable (amplitude at the minimum, real and imaginary optionally if feasible). It is necessary to be able to flag spectrally the FFT spectrum. The user will then need to FFT the data back to a frequency spectrum. Preferaby the same FFT method will do the forward and reverse transform (ie user does not need to specify .fft and .ifft for example).

Change History (10)

comment:1 by Chris Phillips, 19 years ago

Milestone: ASAP2 release → ASAP 2.1

comment:2 by Chris Phillips, 19 years ago

Owner: changed from malte.maquarding to Malte Marquarding

comment:3 by anonymous, 19 years ago

Owner: changed from Malte Marquarding to anonymous
Status: new → assigned

This is on hold for now after intensive investigation. FFT does not reveal the ripple frequencies.

comment:4 by anonymous, 19 years ago

Owner: changed from anonymous to malte.marquarding@…
Status: assigned → new

comment:5 by Malte Marquarding, 19 years ago

Cc: chris.phillips@… added; Chris Phillips removed
Owner: changed from malte.marquarding@… to Malte Marquarding
Status: new → assigned

This is now partially implemented as scantable.lag_flag. This only allows to flag specific frequencies, but does not provide any plottling capabilities.

comment:6 by Malte Marquarding, 19 years ago

Milestone: ASAP 2.1 → ASAP 2.2

The first part is done. Second part deferred

comment:7 by Malte Marquarding, 16 years ago

Milestone: ASAP 2.2 → ASAP 2.4

comment:8 by Malte Marquarding, 16 years ago

Changesets [1578-1579] work towards this.An interactive lagflagger, plus better handling of regions to be flagged. Still need some documentation.

comment:9 by Malte Marquarding, 16 years ago

Also, the lag_flag now interpolates over flagged regions in the data. This is only done for the lag_flag not the interactive version.

comment:10 by Malte Marquarding, 15 years ago

Resolution: → fixed
Status: assigned → closed
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