lerp(9) [plan9 man page]

LERP(9.1)																 LERP(9.1)

NAME

       lerp, sub - linear combinations of images

SYNOPSIS

       fb/lerp file fraction [ file fraction ...  ]

       fb/sub file1 file2

DESCRIPTION

       Lerp  computes a linear combination of a number of input images.  Each input file name is followed by a floating-point fraction by which to
       scale its pixel values.	The fraction after the last image may be omitted, in which case one minus the sum of the other fractions is  used.
       The resulting image is written to standard output.

       Nothing	prevents the fractions from being smaller than zero or larger than one.  Output pixel values that fall below zero or above 255 are
       clamped.

       Sub reads two images, which must be the same size and have the same number of channels.	Each channel of each pixel of the output image	is
       the absolute value of the difference between the corresponding input values.

SOURCE

       /sys/src/fb/lerp.c
       /sys/src/fb/sub.c

SEE ALSO

       picfile(9.6)

																	 LERP(9.1)

WCSREMAP(1)							   User Commands						       WCSREMAP(1)

NAME

       wcsremap - AME

SYNOPSIS

       remap [-vf][-a rot][[-b][-j] ra dec][-i bits][-l num] file1.fit file2.fit ... filen.fit

DESCRIPTION

       Remap FITS or IRAF images into single FITS image using WCS

	      or  :  remap  [-vf][-a  rot][[-b][-j] ra dec][-i bits][-l num] @filelist -a: Output rotation angle in degrees (default 0) -b ra dec:
	      Output center in B1950 (FK4) RA and Dec -e long lat: Output center in ecliptic longitude and latitude -f file:  Use  WCS	from  this
	      file as output WCS -g long lat: Output center in galactic longitude and latitude -i num: Number of bits per output pixel (default is
	      input) -j ra dec: center in J2000 (FK5) RA and Dec -l num: Log every num rows of output image -m mode:  c  closest  pixel  (more	to
	      come)  -n  num:  integer	pixel  value  for blank pixel -o name: Name for output image -p secpix: Output plate scale in arcsec/pixel
	      (default =input) -s: Set BZERO and BSCALE in output file from input file -t: Number of samples per linear output	pixel  -u:  Delete
	      distortion  keywords from output file -v: Verbose -w type: Output WCS type (input is default) -x x y: Output image reference X and Y
	      coordinates (default is center) -y nx ny: Output image dimensions (default is first input image)

wcsremap 3.8.4							     June 2012							       WCSREMAP(1)