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input_tod*
This routine reads a large binary table (for instance a Time Ordered Data
set) from a FITS file. The user can choose to read only a section of the table,
starting from an arbitrary position.
The data can be read into a single or double precision array.
Location in HEALPix directory tree:
src/f90/mod/fitstools.f90
FORMAT call input_tod*(
filename, tod, npix, ntods [, header, firstpix, fmissval]
)
ARGUMENTS
| name & dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
filename (LEN = filenamelen) |
CHR |
IN |
FITS file to be read from |
| tod(0:npix-1,1:ntods) |
SP/ DP |
OUT |
array constructed
from the data present in the file (from the sample firstpix to firstpix + npix - 1. Missing pixels or time
samples are filled with fmissval. |
| npix |
I8B |
IN |
number of pixels or samples to be read. See Note below. |
| ntods |
I4B |
IN |
number of columns to read |
| header(LEN=80)(1:) (OPTIONAL) |
CHR |
OUT |
FITS extension header |
| firstpix (OPTIONAL) |
I8B |
IN |
first pixel (or time sample) to read from
(0 based). default:0. See Note below. |
| fmissval (OPTIONAL) |
SP/ DP |
IN |
value to be given to missing pixels, its default
value is 0. Should be of the same type as tod. |
Note : Indices and number of data elements larger than
231 are only accessible in FITS files on computers with 64 bit
enabled compilers and with some specific compilation options of
cfitsio (see cfitsio documentation).
MODULES & ROUTINESThis section lists the modules and routines used by input_tod*.
-
fitstools
- module, containing:
-
printerror
- routine for printing FITS error messages.
-
cfitsio
- library for FITS file handling.
RELATED ROUTINESThis section lists the routines related to input_tod*
-
anafast
- executable that reads a HEALPix map and analyses it.
-
synfast
- executable that generate full sky HEALPix maps
-
getsize_fits
- subroutine to know the size of a FITS file.
-
write_bintabh
- subroutine to write large arrays into FITS files
-
output_map
- subroutine to write a FITS file from a HEALPix map
-
input_map
- subroutine to read a HEALPix map
(either full sky of cut sky) from a FITS file
Eric Hivon
2010-06-18
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