NAME

       Warp - warp (transform) input dataset

SYNOPSIS

       astwarp [OPTION...] ASTRdata

DESCRIPTION

       Warp  is  part  of GNU Astronomy Utilities 0.16.  Warp will warp/transform the input image
       using an input coordinate matrix.  Currently it accepts  any  general  projective  mapping
       (which includes affine mappings as a subset).

       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

       If  you  couldn't find your answer in the manual, you can get direct help from experienced
       Gnuastro users and developers. For more information, please run:

              $ info help-gnuastro

       Warp options:

              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.

       -I, --ignorecase
              Ignore case in matching/searching columns.

              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').

              Warps:

       -a, --align
              Align the image and celestial axes.

       -c, --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

       Mandatory or optional arguments to long options are also mandatory  or  optional  for  any
       corresponding short options.

       GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/

REPORTING BUGS

       Report bugs to bug-gnuastro@gnu.org.

COPYRIGHT

       Copyright  © 2015-2021, Free Software Foundation, Inc.  License GPLv3+: GNU General public
       license version 3 or later.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.

       Written/developed by Mohammad Akhlaghi

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

       should give you access to the complete manual.