setpix(1)						      General Commands Manual							 setpix(1)

Name
       setpix - Set FITS or IRAF image values

Synopsis
       setpix [-vn] file.fts [x_range y_range value] [@valuefile]

Description
       Set  a  specified  pixel  or  range of pixels in a FITS or IRAF image to a specified value. More than one range of pixels and values may be
       specified on one command line. A file of xrange yrange value triplets may be used to set multiple regions at once. The image may  be  over-
       written or a new image created.

Options
       filename
	      Name of IRAF image header file or FITS file. This must be present.

       @coordfile
	      Name of file containing lines of the format
		       xrange  yrange  value  where  xrange  and  yrange are of the format n or n-n or n,n,n or n-n,n-n and value my be integer or
	      floating point.  value will be converted to the type of the image. If a range is 0, the entire row or column specified by the  other
	      non-zero	range  will  be  set to the indicated value. If both ranges are zero, the entire image will be set to the specified value.
	      New in version 2.6.4.

       xrange yrange value
	      Image coordinate x and y ranges and the value to which that region will be set. Either one of these triplets or a file of  triplets,
	      specified by @filename, must be present. xrange and yrange are of the format n or n-n or n,n,n or n-n,n-n and value my be integer or
	      floating point. value will be converted to the type of the image. If a range is 0, the entire row or column specified by	the  other
	      non-zero	range  will  be  set to the indicated value. If both ranges are zero, the entire image will be set to the specified value.
	      Ranges new in version 2.6.4.

       -a <number>
	      Add constant to pixels

       -d <number>
	      Divide pixels by constant

       -i     List each line which is dropped

       -m <number>
	      Multiply pixels by constant

       -n     Write the output to a new file which is named by inserting an e before the file extension. The new file is  always  written  to  the
	      current working directory.

       -s <number>
	      Subtract constant from pixels

       -v     Print more information about the process

Author
       Doug Mink, SAO (dmink@cfa.harvard.edu)

6 July 2001							     WCSTools								 setpix(1)