% alteralm [options] [parameter_file]
Alteralm can modify temperature as well as polarisation . It will also modify the error on the if those are provided. It works best if the input FITS file contains the relevant information on the beam size and shape, maximum multipoles, ...
Dataset | Description |
---|---|
/data/pixel_window_nxxxx.fits | Files containing pixel windows for various nsmax. |
alteralm |
Alteralm runs in interactive mode, self-explanatory.
alteralm filename |
When 'filename' is present, alteralm enters the non-interactive mode and parses its inputs from the file 'filename'. This has the following structure: the first entry is a qualifier which announces to the parser which input immediately follows. If this input is omitted in the input file, the parser assumes the default value. If the equality sign is omitted, then the parser ignores the entry. In this way comments may also be included in the file. In this example, the file contains the following qualifiers:
infile_alms= alm.fits
nlmax_out= 512
fwhm_arcmin_out= 20.0
coord_out= G
outfile_alms= newalm.fits
Alteralm reads the from 'alm.fits'. Since
nsmax_in
nsmax_out
fwhm_arcmin_in
beam_file_in
coord_in
epoch_in
epoch_out
windowfile_in
winfiledir_in
windowfile_out
winfiledir_out
have their default values, the pixel size will remain the same, the will be corrected from its input beam (whatever it was, assuming the relevant information can be found), and a gaussian beam of 20.0 arcmin will be applied instead, the will also be rotated from their original coordinate system (whatever it was, assuming the relevant information can be found) into Galactic coordinates, assuming a year 2000 epoch for both, and only the multipoles up to 512 will be written in 'newalm.fits'.
- ■ Initial release (HEALPix 2.00)
Message | Severity | Text |
---|---|---|
can not allocate memory for array xxx | Fatal | You do not have sufficient system resources to run this facility at the map resolution you required. Try a lower map resolution. |
this is not a binary table |
the fitsfile you have specified is not of the proper format | |
there are undefined values in the table! | the fitsfile you have specified is not of the proper format | |
the header in xxx is too long | the fitsfile you have specified is not of the proper format | |
XXX-keyword not found | the fitsfile you have specified is not of the proper format | |
found xxx in the file, expected:yyyy | the specified fitsfile does not contain the proper amount of data. | |
alteralm> no information found on input alms beam |
Fatal | no information on the input beam was found, neither from parsing the FITS file header, nor from what the user provided. |
Version 3.82, 2022-07-28