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Comparing ray/doc/man/man1/getinfo.1 (file contents):
Revision 1.9 by greg, Tue Jul 16 17:07:35 2019 UTC vs.
Revision 1.10 by greg, Mon Mar 21 00:21:13 2022 UTC

# Line 19 | Line 19 | getinfo - get header information from a RADIANCE file
19   -
20   .br
21   .B getinfo
22 + {
23   .B -a
24 + |
25 + .B -r
26 + }
27   .B "info_line1 .."
28   .br
29   .B getinfo
# Line 73 | Line 77 | adds one or more header lines to the standard input.
77   These lines are given as arguments to
78   .I getinfo,
79   and must be quoted if they contain spaces.
80 + The alternative form with
81 + .I \-r
82 + replaces any previous occurances of the settings in the given
83 + line(s) with nothing if there is only one word, or with
84 + the whole line if quoted and containing interior white space or
85 + an equals sign ('=').
86   .PP
87   The fourth form of
88   .I "getinfo \-c"
# Line 106 | Line 116 | To add two header lines modifying the view
116   and exposure calibration of a picture:
117   .IP "" .2i
118   getinfo -a "VIEW= -vta -vh 180 -vv 180" "EXPOSURE=1.5" < orig.hdr > modified.hdr
119 + .PP
120 + To remove any indented lines containing "EXPOSURE=" and replace any
121 + left-justified "EXPOSURE=" lines with a single value of 16:
122 + .IP "" .2i
123 + getinfo -r " EXPOSURE=" "EXPOSURE=16" < orig.hdr > fixed.hdr
124   .PP
125   To raise floating-point matrix elements to a power of 2.7:
126   .IP "" .2i

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