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Comparing ray/doc/man/man1/gendaymtx.1 (file contents):
Revision 1.1 by greg, Sun Jan 20 02:07:16 2013 UTC vs.
Revision 1.9 by greg, Tue May 28 15:19:17 2019 UTC

# Line 7 | Line 7 | gendaymtx - generate an annual Perez sky matrix from a
7   [
8   .B "\-v"
9   ][
10 + .B "\-h"
11 + ][
12   .B "\-d|\-s"
13   ][
14 + .B "\-r deg"
15 + ][
16   .B "\-m N"
17   ][
18   .B "\-g r g b"
# Line 16 | Line 20 | gendaymtx - generate an annual Perez sky matrix from a
20   .B "\-c r g b"
21   ][
22   .B "-o{f|d}"
23 + ][
24 + .B "-O{0|1}"
25   ]
26   [
27   .B "tape.wea"
# Line 49 | Line 55 | yield 8760x3 (26280) values per output line (row).
55   The
56   .I \-c
57   option may be used to specify a color for the sky.
58 < The gray value should equal 1 for proper energy balance
58 > The gray value should equal 1 for proper energy balance.
59   The default sky color is
60   .I "\-c 0.960 1.004 1.118".
61   Similarly, the
# Line 61 | Line 67 | corresponding to a 20% gray.
67   .PP
68   The
69   .I \-d
70 < option may be used to produce a sun-only matrix, with no sky contributions.
70 > option may be used to produce a sun-only matrix, with no sky contributions,
71 > and the ground patch also set to zero.
72   Alternatively, the
73   .I \-s
74 < option may be used to exclude any direct solar component from the output.
74 > option may be used to exclude any direct solar component from the output,
75 > with the rest of the sky and ground patch unaffected.
76 > If there is a sun in the description,
77 > .I gendaymtx
78 > will include its contribution in the four nearest sky patches,
79 > distributing energy according to centroid proximity.
80   .PP
81 + By default,
82 + .I gendaymtx
83 + assumes the positive Y-axis points north such that the first sky patch
84 + is in the Y-axis direction on the horizon, the second patch is just
85 + west of that, and so on spiraling around to the final patch near the zenith.
86   The
87 + .I \-r
88 + (or
89 + .I \-rz)
90 + option rotates the sky the specified number of degrees counter-clockwise
91 + about the zenith, i.e., west of north.
92 + This is in keeping with the effect of passing the output of
93 + .I gensky(1)
94 + or
95 + .I gendaylit(1)
96 + through
97 + .I xform(1)
98 + using a similar transform.
99 + .PP
100 + The
101   .I \-of
102   or
103   .I \-od
# Line 74 | Line 105 | option may be used to specify binary float or double o
105   This is much faster to write and to read, and is therefore preferred on
106   systems that support it.
107   (MS Windows is not one of them.)\0
108 + The
109 + .I \-O1
110 + option specifies that output should be total solar radiance rather
111 + than visible radiance.
112 + The
113 + .I \-h
114 + option prevents the output of the usual header information.
115   Finally, the
116   .I \-v
117   option will enable verbose reporting, which is mostly useful for
# Line 95 | Line 133 | Ian Ashdown wrote most of the code,
133   based on Jean-Jacques Delaunay's original gendaylit(1) implementation.
134   Greg Ward wrote the final parameter parsing and weather tape conversion.
135   .SH "SEE ALSO"
136 < dctimestep(1), genBSDF(1), gendaylit(1), genskyvec(1), rcontrib(1)
136 > dctimestep(1), genBSDF(1), gendaylit(1), gensky(1), genskyvec(1),
137 > rcollate(1), rcontrib(1), xform(1)

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