NAME

       lookamb - examine ambient file values

SYNOPSIS

       lookamb [ -d ][ -r ][ -h ] [ ambfile ]

DESCRIPTION

       Lookamb  examines an ambient file produced by rpict(1), rtrace(1), or rvu(1).  The default
       mode prints the position, direction, level, weight, radius, value, position  gradient  and
       direction gradient for each stored ambient value preceded by a label appropriate for human
       interpretation.  The -d option prints the  same  quantities  in  18  columns  without  any
       expanatory text, and is more appropriate as input to another program.

       The  -r  option  performs  the  reverse  conversion,  taking  the  output  of  lookamb and
       reproducing the original ambient file on the standard output.

       The -h option causes lookamb not to print out the header information on the output, or not
       to expect it on the input with the -r option.

       If no file is given, lookamb reads from the standard input.

NOTES

       Before  release  2.2 of Radiance, ambient files were in a machine-dependent format.  Since
       that is no longer the case, ambient files can now be moved freely between machines without
       any  conversions.   Thus, the only reason to use lookamb now is to examine the contents of
       an ambient file.

AUTHOR

       Greg Ward

SEE ALSO

       getinfo(1), oconv(1), pfilt(1), pinterp(1), rpict(1), rtrace(1), rvu(1)