--- name: "visir_util_convert_weight" section: "7" platform: "linux" package: "cpl-plugin-visir-doc" version: "4.4.2+dfsg-1" release: "Debian 12 (Bookworm)" platforms: ["linux"] url: "https://new.carta.tech/visir_util_convert_weight" --- # visir\_util\_convert\_weight(7) Conversion between different weight maps ## NAME visir\_util\_convert\_weight - Conversion between different weight maps ## SYNOPSIS esorex **visir\_util\_convert\_weight** \[OPTIONS\] FILE.sof ## DESCRIPTION The files listed in the Set Of Frames (sof-file) must be tagged: VISIR-weight-map.fits WEIGHT\_MAP or VISIR-error-map.fits ERROR\_MAP or VISIR-variance-map.fits VARIANCE\_MAP VISIR-bpm-file.fits BPM (optional) The relation between an error e, a weight w and a variance v is: e = sqrt(v) = 1/sqrt(w). Depending on the setting of the boolean recipe parameters each input file will cause the following product(s) to be created (each with a FITS card ´HIERARCH ESO PRO CATG´ with the specified value) ERROR\_MAP: An error map, requires input v \>= 0, w \> 0 WEIGHT\_MAP: A weight map, requires input e \> 0, v \> 0 VARIANCE\_MAP: A variance map, requires input e \>= 0, w \> 0 If for a given input the identical output is specified, the data unit(s) may still change according to the provided bad pixel map In a weight map product any bad pixel is set to 0. In a variance or error map product any bad pixel is set to the value specified by the relevant recipe option. ## OPTIONS - **--error** *\* Convert to error (bool; default: True). The full name of this option for the EsoRex configuration file is **visir.visir\_util\_convert\_weight.error** \[default = *True*\]. - **--weight** *\* Convert to weight. Bad pixels are seto to 0 (bool; default: False). The full name of this option for the EsoRex configuration file is **visir.visir\_util\_convert\_weight.weight** \[default = *False*\]. - **--variance** *\* Convert to variance. Bad pixels are seto to 0 (bool; default: False). The full name of this option for the EsoRex configuration file is **visir.visir\_util\_convert\_weight.variance** \[default = *False*\]. - **--bad\_value** *\* The value to use for any bad pixel in an error or variance map (float; default: 3.4028234663852886e+38). The full name of this option for the EsoRex configuration file is **visir.visir\_util\_convert\_weight.bad\_value** \[default = *3.4028234663852886e+38*\]. - **--bad\_flag** *\* The value used to flag a bad pixel in an input bad pixel map. True: 1. False: 0. (bool; default: True). The full name of this option for the EsoRex configuration file is **visir.visir\_util\_convert\_weight.bad\_flag** \[default = *True*\]. Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command. ## SEE ALSO The full documentation for the visir pipeline can be downloaded as a PDF file using the following URL: - **ftp://ftp.eso.org/pub/dfs/pipelines/visir/visir-pipeline-manual-1.4.pdf** An overview over the existing ESO pipelines can be found on the web page **https://www.eso.org/sci/software/pipelines/**. Basic documentation about the EsoRex program can be found at the esorex (1) man page. It is possible to call the pipelines from python using the python-cpl package. See **https://packages.python.org/python-cpl/index.html** for further information. The other recipes of the visir pipeline are [*visir\_img\_dark*(7)](/visir_img_dark/7.md), [*visir\_img\_ff*(7)](/visir_img_ff/7.md), [*visir\_img\_reduce*(7)](/visir_img_reduce/7.md), [*visir\_img\_trans*(7)](/visir_img_trans/7.md), [*visir\_old\_img\_combine*(7)](/visir_old_img_combine/7.md), [*visir\_old\_img\_phot*(7)](/visir_old_img_phot/7.md), [*visir\_old\_spc\_obs*(7)](/visir_old_spc_obs/7.md), [*visir\_old\_spc\_obs\_ech*(7)](/visir_old_spc_obs_ech/7.md), [*visir\_old\_spc\_phot*(7)](/visir_old_spc_phot/7.md), [*visir\_old\_spc\_phot\_ech*(7)](/visir_old_spc_phot_ech/7.md), [*visir\_old\_spc\_wcal*(7)](/visir_old_spc_wcal/7.md), [*visir\_old\_spc\_wcal\_ech*(7)](/visir_old_spc_wcal_ech/7.md), [*visir\_old\_util\_destripe*(7)](/visir_old_util_destripe/7.md), [*visir\_spc\_reduce*(7)](/visir_spc_reduce/7.md), [*visir\_util\_apply\_calib*(7)](/visir_util_apply_calib/7.md), [*visir\_util\_clip*(7)](/visir_util_clip/7.md), [*visir\_util\_detect\_shift*(7)](/visir_util_detect_shift/7.md), [*visir\_util\_img\_std\_cat*(7)](/visir_util_img_std_cat/7.md), [*visir\_util\_join*(7)](/visir_util_join/7.md), [*visir\_util\_qc*(7)](/visir_util_qc/7.md), [*visir\_util\_repack*(7)](/visir_util_repack/7.md), [*visir\_util\_run\_swarp*(7)](/visir_util_run_swarp/7.md), [*visir\_util\_spc\_std\_cat*(7)](/visir_util_spc_std_cat/7.md), [*visir\_util\_spc\_txt2fits*(7)](/visir_util_spc_txt2fits/7.md), [*visir\_util\_undistort*(7)](/visir_util_undistort/7.md) ## VERSION visir\_util\_convert\_weight 4.4.2 ## AUTHOR Lars Lundin \ ## BUG REPORTS Please report any problems to https://support.eso.org. Alternatively, you may send a report to the ESO User Support Department \. ## LICENSE This file is part of the VISIR Instrument Pipeline Copyright (C) 2011 European Southern Observatory This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1307 USA