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read_fits_cut4
This routine reads a cut sky HEALPix map from a FITS file. The format used for the
FITS file follows the one used for Boomerang98 and is adapted from COBE/DMR
Location in HEALPix directory tree:
src/f90/mod/fitstools.f90
FORMAT call read_fits_cut4(
filename, np, pixel, [signal, n_obs, serror, header, units, extno]
)
ARGUMENTS
| name&dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
filename(LEN=filenamelen) |
CHR |
IN |
FITS file to be read from,
containing a cut sky map |
| np |
I4B |
IN |
number of pixels to be read from the file |
| pixel(0:np-1) |
I4B |
OUT |
index of observed (or valid) pixels |
| signal(0:np-1)(OPTIONAL) |
SP |
OUT |
value of signal in each observed pixel |
| n_obs(0:np-1)(OPTIONAL) |
I4B |
OUT |
number of observation per pixel |
| serror(0:np-1)(OPTIONAL) |
SP |
OUT |
rms of signal in pixel. (For white noise,
this would be
 ) |
| header(LEN=80)(1:) (OPTIONAL) |
CHR |
OUT |
FITS extension header |
| units(LEN=20)(OPTIONAL) |
CHR |
OUT |
maps units (applies only to
Signal and Serror, which are assumed to have the same units) |
| extno (OPTIONAL) |
I4B |
IN |
extension number (0 based) for which map
is read. Default = 0 (first extension). |
MODULES & ROUTINESThis section lists the modules and routines used by read_fits_cut4.
-
fitstools
- module, containing:
-
printerror
- routine for printing FITS error messages.
-
cfitsio
- library for FITS file handling.
RELATED ROUTINESThis section lists the routines related to read_fits_cut4
-
anafast
- executable that reads a HEALPix map and analyses it.
-
synfast
- executable that generate full sky HEALPix maps
-
getsize_fits
- routine to know the size of a FITS file and its type (eg, full sky vs cut sky)
-
input_map
- all purpose routine to input a map of any kind from a FITS file
-
output_map
- subroutine to write a FITS file from a HEALPix map
-
write_fits_cut4
- subroutine to write a cut sky map into a FITS file
Eric Hivon
2010-06-18
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