NAME
Warp - warp (transform) input datasetSYNOPSIS
astwarp [ OPTION...] ASTRdataDESCRIPTION
Warp is part of GNU Astronomy Utilities 0.19. Warp will resample the pixel grid of an input image. By default (if no special linear warping is requested), it will align the image to the WCS coordinates in anyand remove any possible distortion. Linear warping (like '--rotate' or '--scale') should be explicitly requested with the options under the "Linear warps" group below. For more information, please run any of the following commands. In particular the second contains a very comprehensive explanation of Warp's invocation: expected input(s), output(s), and a full description of all the options.- All options and their values:
- $ astwarp -P
- Inputs/Outputs and options:
- $ info astwarp
- Full section in manual/book:
- $ info Warp
- Full Gnuastro manual/book:
- $ info gnuastro
- $ info help-gnuastro
- Input:
- --hendwcs=INT
- Header keyword number to end reading WCS.
- --hstartwcs=INT
- Header keyword number to start reading WCS.
- -h, --hdu=STR/INT
- Extension name or number of input data.
- Output:
- -C, --coveredfrac=FLT
- Acceptable fraction of output pixel covered.
- -D, --dontdelete
- Don't delete output if it exists.
- -k, --keepwcs
- Do not apply warp to input's WCS
- -K, --keepinputdir
- Keep input directory for automatic output.
- -o, --output=STR
- Output file name.
- -T, --type=STR
- Type of output: e.g., int16, float32, etc...
- --wcslinearmatrix=STR
- WCS linear matrix of output ('pc' or 'cd').
- Align with WCS coordinates (correcting distortion, default mode)
- --checkmaxfrac
- Moire pattern: Max.frac. input pixels on output.
- --ctype=STR[,STR]
- FITS standard CTYPE value (e.g., 'RA---TAN').
- -c, --center=FLT,FLT
- Center coordinate of the output image in RA,DEC.
- --edgesampling=INT
- Number of extra samplings in pixel sides.
- -G, --gridfile=FITS
- File to use for output grid.
- -H, --gridhdu=STR
- HDU/extension to use for output grid.
--widthinpix
--width is in pixels, not in WCS coordinates.
- -w, --width=INT,INT
- Output image size in both dimensions.
- -x, --cdelt=FLT[,FLT]
- Pixel scale of output (usually degrees/pixel).
- Linear warps (must be called explicitly on command-line)
- --centeroncorner
- Center of coordinates on first pixel corner.
- -e, --shear=FLT[,FLT]
- Shear along the given axis(es).
- -f, --flip=INT[,INT]
- Flip along the given axis(es).
- -m, --matrix=STR
- Raw transformation matrix, highest priority.
- -p, --project=FLT[,FLT]
- Project along the given axis(es).
- -r, --rotate=FLT
- Rotate by the given angle in degrees.
- -s, --scale=FLT[,FLT]
- Scale along the given axis(es).
- -t, --translate=FLT[,FLT]
- Translate along the given axis(es).
- Operating modes:
- -?, --help
- give this help list
- --checkconfig
- List all config files and variables read.
- --cite
- BibTeX citation for this program.
- --config=STR
- Read configuration file STR immediately.
- --lastconfig
- Do not parse any more configuration files.
- --log
- Information about output(s) in a log file.
- --minmapsize=INT
- Min. bytes to avoid RAM automatically.
- -N, --numthreads=INT
- Number of CPU threads to use.
- --onlyversion=STR
- Only run if the program version is STR.
- -P, --printparams
- Print parameter values to be used and abort.
- --quietmmap
- Don't print mmap'd file's name and size.
- -q, --quiet
- Only report errors, remain quiet about steps.
- -S, --setdirconf
- Set default values for this directory and abort.
- --usage
- give a short usage message
- -U, --setusrconf
- Set default values for this user and abort.
- -V, --version
- print program version
REPORTING BUGS
Report bugs to [email protected].COPYRIGHT
Copyright © 2015-2022 Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.SEE ALSO
The full documentation for Warp is maintained as a Texinfo manual. If the info and Warp programs are properly installed at your site, the command- info Warp
| October 2022 | GNU Astronomy Utilities 0.19 |