awk online to exclude rows Post: 302909426

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pfsclamp

pfsclamp(1)						      General Commands Manual						       pfsclamp(1)

NAME

       pfsclamp - Clamp color and luminance channel values to be within the specified range

SYNOPSIS

       pfsclamp [--min <minimum>] [--max <maximum>] [--percentile] [--zero] [--rgb]

DESCRIPTION

       Use  this command to clamp values of luminance and color channels to be within the specified range. I.e. if a value in the channel is above
       the specified maximum or below specified minimum, set the value to either minimum or maximum.

       The command operates directly on XYZ channels.

OPTIONS

       --min <val>

	      Lower bound for clamping. Default value: 0.0001 (10^-4)

       --max <val>

	      Upper bound for clamping. Default value: 100000000 (10^8)

       --percentile, -p

	      Treat given min and max values as a percentile.

       --zero, -z

	      Set values out of clamping range to zero, instead of setting to specified maximum and minimum.

       --rgb

	      Perform clamping in RGB space.

EXAMPLES

       pfsin memorial.hdr | pfsclamp | pfsout memorial_cl.hdr

	      Remove possible out-of-range values, for examples zeros, from memorial image.

       pfsin memorial.hdr | pfsclamp --max 0.95 -p | pfsout memorial_cl.hdr

	      Remove 5% of the brightest pixels from the original image.

SEE ALSO

       pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de> and Grzegorz Krawczyk <krawczyk@mpi-sb.mpg.de>.

																       pfsclamp(1)