astimgcrop(1) · carta

NAME

ImageCrop - crop regions of an image

SYNOPSIS

astimgcrop [OPTION...] [ASCIIcatalog] ASTRdata ...

DESCRIPTION

ImageCrop is part of GNU Astronomy Utilities 0.2.33-8a3b. ImageCrop will create cutouts, thumbnails, postage stamps or crops of region(s) from input image(s) using image or celestial coordinates. If muliple crops are desired, a catalog must be provided. When in WCS mode, if the cut out covers more than one input image, all overlapping input images will be stitched in the output.

For more information, please run any of the following commands. They will respectively show you the `Invoking ImageCrop' subsection, the complete `ImageCrop' section, or the full GNU Astronomy Utilities manual. In particular the first contains a very complete explanation of each option.

: info astimgcrop

: info ImageCrop

: 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

ImageCrop 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.

: Output:

-b, --noblank: Remove parts of the crop box out of input image.

-c, --checkcenter=INT: Side of box (in pixels) to check.

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

-k, --keepblankcenter: Keep crop if the central parts are not filled.

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

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

-p, --suffix=STR: Suffix (postfix) of cropped images.

: Crop:

-a, --iwidth=INT: Image mode width (in pixels).

-d, --dec=FLT: Declination of one crop box center.

-f, --racol=INT: Column of Right Ascension (RA) in catalog.

-g, --deccol=INT: Column of Declination (Dec) in catalog.

-i, --xcol=INT: Column of X (first FITS axis) value in catalog.

-j, --ycol=INT: Column of Y (second FITS axis) in catalog.

-l, --polygon=STR: Polygon vertices of region to crop.

--outpolygon: Keep the polygon's outside, mask the inside.

-r, --ra=FLT: Right ascension of one crop box center.

-s, --section=STR: Image section string specifying crop range.

-w, --wwidth=FLT: WCS mode width (in arc seconds).

-x, --xc=FLT: First axis position for only one crop.

-y, --yc=FLT: Second axis position for only one crop.

-z, --zeroisnotblank: 0.0 in float or double images are not blank.

: Operating modes:

-?, --help: give this help list

--cite: BibTeX citation for ImageCrop.

-I, --imgmode: Use image coordinates (x and y).

--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

-W, --wcsmode: Use WCS coordinates (Ra and Dec).

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/

AUTHOR

Written by Mohammad Akhlaghi

REPORTING BUGS

Report bugs to [email protected].

COPYRIGHT