setpix(1)
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 overwritten 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
