NAME

imshift - shifts the pixels in an image

SYNOPSIS

imshift file [dr=] [dc=] [fill=] [nmatch=] [rot=] [inverse] [noworld] [outfile=]

DESCRIPTION

Shifts each pixel value in the given file by dr rows and/or dc columns. Any pixels shifted out of the image are discarded, and vacated pixels are set to zero or the value set by the fill keyword.

If the pixel shift in either rows or columns differs from an integer by more than .001, the program uses a bi-linear interpolation algorithm.

WCS coordinates are adjusted as needed (if not noworld).

OPTIONS

nmatch= is a courtesy option that is ignored for compatibility with match.

rot= is also a courtesy option that is ignored, but an error message is printed to stderr.

The file will be overwritten unless the outfile option is specified.

inverse- swaps the direction of dr and dc.

noworld- doesn't change WCS values.

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