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HMI Ring Diagrams
Pipeline Module Specifications
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pspec3
Module Version
0.7 14 VII 2009
General Description
pspec3 is designed to calculate the full 3-dimensional power spectrum of
a time series of 2-dimensional images. The input data are optionally
apodized by a (1-x^2)^2 taper operating between specified inner and
outer radii of the images and a similar taper operating on the time axis
(image number). The input data series must consist of 3-dimensional
data cubes (such as those produced by mtrack), each treated as a
separate data record.
Status
This version has been superseded by Version 0.8
Included in JSOC release 5.6
Never used for ring-diagram pipelines
The source code and Makefile are in the JSOC CVS repository
Usage
pspec3_v07 [-lvx] in= InputDescriptor pspec= OutputDescriptor
[param= val ...]
Flags
-l output direct power spectrum rather than scaled log
-v run verbose
-x use double-precision calculation internally
Parameters
in The name of an input dataset (record selection); Default:
mdi.rdVtrack_dp[?CarrRot=1988 and LonHG=180.0 and LatHG=0.0?]
pspec The name of the output data series, which must already
exist; record specification is based on the input data record(s)
and the series prime keywords. Default: mdi.rdVpspec_dp
mask_in Inner radial edge of spatial taper; Default: 0.9375
mask_ex Outer radial edge of spatial taper; Default: 1.0
apodize Inner edge of temporal taper; Default: 0.96875
fbin Output frequency binning; 0 -> no binning; Default: 0
Input Data series class:
tracked mapped data cubes from solar image data
Input keys used or inspected:
MapScale, T_STOP, T_START, CDELT3
Sample input series:
mdi.rdVtrack_dp
Output Data series class:
power spectra of data cubes
Output keys set (if possible):
CRPIX1, CRPIX2, CRPIX3, CRVAL1, CRVAL2, CRVAL3, CTYPE1, CTYPE2, CTYPE2,
CDELT1, CDELT2, Delta_k, Delta_kx, Delta_ky, CDELT3, Delta_nu, D_OMEGA,
apode_k_min, apode_k_max, apode_f, ReqTime, Requestor, RequestID, Notify,
Log_Base, DataMin, DataMax
Input keys propagated to output (if possible):
CarrTime, CarrRot, CarrLon, LonHG, LatHG, CMLon, MidTime, Duration, LonSpan,
T_START, T_STOP, Coverage, ZonalTrk, MeridTrk, MapScale, MapProj, PosAng, MAI
Sample output series:
mdi.rdVpspec_dp
Bugs in current version
Rejects an input dataset containing more than one record.
Unable to build a working linux_ia32 binary - fails in the first call to
drms_segment_read()