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dump_alms*
This routine stores alm values in a binary FITS file. The FITS file created will contain one integer column with
index=l2+l+m+1 and 2 single precision columns with real/imaginary alm values. One can store temperature alm or polarisation, aElm or aBlm. If temperature is specified, a FITS file is created. If polarisation is specified, an old FITS file is opened and extra extensions is created.
Location in HEALPix directory tree:
src/f90/mod/fitstools.f90
FORMAT call dump_alms*(
filename, alms, nlmax, header, nlheader, extno
)
ARGUMENTS
| name & dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
filename(LEN=filenamelen) |
CHR |
IN |
filename for the FITS-file to store the alm in. |
| nlmax |
I4B |
IN |
maximum l value to store. |
| alms(0:nlmax,0:nlmax) |
SPC/ DPC |
IN |
array with alm. alms(l,m) corresponds to alm |
| extno |
I4B |
IN |
extension number. If 0 is specified, a FITS file is created and alm is stored in the first FITS extension as temperature alm. If 1 or 2 is specified, an already existing file is opened and a 2nd or 3rd extension is created, treating alm as almE or almB. |
| nlheader |
I4B |
IN |
number of header lines to write to the file. |
| header(LEN=80) (1:nlheader) |
CHR |
IN |
the header to the FITS-file. |
EXAMPLE:
call dump_alms ('alms.fits', alms, 64, header, 80, 1)
Opens an already existing FITS file which contains temperature alm. An extra extension is added to the file where the alm array are written in a three-column format as described above. 80 header lines are written to the file from the array header(1:80).
MODULES & ROUTINESThis section lists the modules and routines used by dump_alms*.
-
fitstools
- module, containing:
-
printerror
- routine for printing FITS error messages.
-
cfitsio
- library for FITS file handling.
RELATED ROUTINESThis section lists the routines related to dump_alms*
-
fits2alms, read_conbintab
- routines to read alm from a FITS-file
-
alms2fits
- has the same function as dump_alms* but is more general.
Eric Hivon
2010-06-18
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