Replace a string within a file.. with help of positions Post: 302501013

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pfscut

pfscut(1)						      General Commands Manual							 pfscut(1)

NAME

       pfscut - Extract a rectangle out of a frame in PFS stream

SYNOPSIS

       pfscut [--left <columns>] [--right <columns>] [--top <rows>] [--bottom <rows>] [--width <new_width>] [--height <new_height>] [--help] [x_ul
       y_ul x_br y_br]

DESCRIPTION

       Extract a rectangle out of each frame in PFS stream. You can either specify x and y coordinates of upper left and lower right  corner  (the
       coordinates start with 0 and rise in the left-to-right and up-to-botton directions) or give a combination of the options listed below.

OPTIONS

       --left <columns>, -l <columns>
	      Number of columns to be cut out from the left edge of an image.

       --right <columns>, -r <columns>
	      Number of columns to be cut out from the right edge of an image.

       --top <rows>, -t <rows>
	      Number of rows to be cut out from the top edge of an image.

       --bottom <rows>, -b <rows>
	      Number of rows to be cut out from the bottom edge of an image.

       --width <new_width>, -W <new_width>
	      Width of an output image. Note that --width can be mixed with either --left or --right option.

       --height <new_height>, -H <new_height>
	      Height of an output image. Note that --height can be mixed with either --top or --bottom option.

       --help, -h
	      Print a list of commandline options.

EXAMPLES

       pfsin image.hdr | pfscut --left 20 --top 5 | pfsout out.hdr
	      Cut out 20 columns from the left and 5 rows from the top edge of image.hdr and save frame as out.hdr.

       pfsin image.hdr | pfscut --left 20 --width 400 | pfsout out.hdr
	      Cut out 20 columns from the left edge of image.hdr, and create output image 400 pixels in width.

       pfsin image.hdr | pfscut 0 0 511 511 | pfsout out.hdr
	      Cut  left-upper  part  of  the  image of the size 512x512 (note that coordinates start with 0 and 512 is the last row/column that is
	      included in the resulting image).

       SEE ALSO
	      pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Dorota Zdrojewska <dzdrojewska@wi.ps.pl>.

																	 pfscut(1)