astimgwarp1

Warp (transform) input image

Usage

astimgwarp [OPTION ...] [matrix.txt] ASTRdata ...

Overview

ImageWarp is part of GNU Astronomy Utilities 0.2.33-8a3b. ImageWarp 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. They will respectively show you the `Invoking ImageWarp' subsection, the complete `ImageWarp' section, or the full GNU Astronomy Utilities manual. In particular the first contains a very complete explanation of each option.

	info astimgwarp
	info ImageWarp
	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

ImageWarp options:

: Input:

--hendwcs=INT: Header keyword number to stop reading WCS.

--hstartwcs=INT: Header keyword number to start reading WCS.

-h, --hdu=STR: Extension name or number of input data.

-m, --matrix=STR: Warp/Transform matrix elements.

--nofitscorrect: Do not shift to correct for FITS positioning.

: Output:

-b, --maxblankfrac=FLT: Maximum fraction of area covered by blank.

-d, --doubletype: Do not convert output to input image type.

-D, --dontdelete: Don't delete output if it exists.

-K, --keepinputdir: Do not remove input's dir info for output.

-n, --nowcscorrection: Do not correct input image WCS.

-o, --output=STR: Output file or directory name.

-z, --zerofornoinput: Set pixels with no input to zero not blank.

: Modular warpings:

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

-e, --shear=FLT[,FLT]: Shear along the given axis(es).

-f, --flip=FLT[,FLT]: Flip along the given axis(es).

-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

--cite: BibTeX citation for ImageWarp.

--nolog: No log file for programs which make one.

-N, --numthreads=INT: Number of CPU threads to use.

--onlydirconf: Only read current directory configuration file.

--onlyversion=STR: Only run if the program version is this.

-P, --printparams: Print parameter values to be used and abort.

-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/