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Comparing ray/doc/man/man1/dctimestep.1 (file contents):
Revision 1.2 by greg, Thu Jul 1 21:54:55 2010 UTC vs.
Revision 1.5 by greg, Fri Jan 11 17:21:39 2013 UTC

# Line 1 | Line 1
1   .\" RCSid $Id$"
2   .TH DCTIMESTEP 1 12/09/09 RADIANCE
3   .SH NAME
4 < dctimestep - compute annual simulation time-step via matrix multiplication
4 > dctimestep - compute annual simulation time-step(s) via matrix multiplication
5   .SH SYNOPSIS
6   .B dctimestep
7 + [
8 + .B "\-n nsteps"
9 + ][
10 + .B "\-o ospec"
11 + ][
12 + .B "\-i{f|d}
13 + ]
14   .B DCspec
15   [
16 < .B skyvec
16 > .B skyf
17   ]
18   .br
19   .B dctimestep
20 + [
21 + .B "\-n nsteps"
22 + ][
23 + .B "\-o ospec"
24 + ][
25 + .B "\-i{f|d}
26 + ]
27   .B Vspec
28   .B Tbsdf.xml
29   .B Dmat.dat
30   [
31 < .B skyvec
31 > .B skyf
32   ]
33   .SH DESCRIPTION
34   .I Dctimestep
# Line 22 | Line 36 | has two invocation forms.
36   In the first form,
37   .I dctimestep
38   is given a daylight coefficient specification and an optional sky
39 < vector, which may be read from the standard input if unspecified.
40 < The daylight coefficients are multiplied against this vector and the results
41 < are written to the standard output.
39 > vector or matrix, which may be read from the standard input if unspecified.
40 > The daylight coefficients are multiplied against these sky values
41 > and the results are written to the standard output.
42   This may be a list of color values or a combined Radiance image,
43   as explained below.
44   .PP
# Line 35 | Line 49 | The first argument is the View matrix file that specif
49   directions are related to some set of measured values, such as an array of
50   illuminance points or images.
51   This matrix is usually computed by
52 < .I rtcontrib(1)
52 > .I rcontrib(1)
53   for a particular set of windows or skylight openings.
54   The second argument is the window transmission matrix, or BSDF, given as
55   a standard XML description.
# Line 44 | Line 58 | relate to input directions on the same opening.
58   This is usually computed using
59   .I genklemsamp(1)
60   with
61 < .I rtcontrib
61 > .I rcontrib
62   in a separate run for each window or skylight orientation.
63 < The final input is the sky contribution vector,
63 > The final input is the sky contribution vector or matrix,
64   usually computed by
65   .I genskyvec(1),
66   which may be passed on the standard input.
67 < This data must be in ASCII format, whereas the View and Daylight matrices
67 > This data is expected to be in ASCII format, whereas the
68 > View and Daylight matrices
69   are more efficiently represented as binary float data if machine
70   byte-order is not an issue.
71 + The
72 + .I \-if
73 + or
74 + .I \-id
75 + option may be used to specify that sky data is in float or double
76 + format, instead.
77 + (Note that binary double data may not be read from stdin.)\0
78   .PP
79   Sent to the standard output of
80   .I dctimestep
# Line 68 | Line 90 | interpreted as a list of
90   .I Radiance
91   component pictures, which will be summed according to the computed
92   vector.
93 + .PP
94 + The
95 + .I \-n
96 + option may be used to compute multiple time steps in a
97 + single invocation.
98 + The sky input file must contain the number of
99 + columns specified in each sky patch row, whether it is read
100 + from the standard input or from an ASCII file.
101 + The columns do not need to be given on the same
102 + line, so long as the number of values totals 3*Nsteps*Npatches.
103 + Input starts from the first patch at the first time step, then the
104 + first patch at the second time step, and so on.
105 + .PP
106 + The
107 + .I \-o
108 + option may be used to specify a file or a set of output files
109 + to use rather than the standard output.
110 + If the given specification contains a '%d' format string, this
111 + will be replaced by the time step index, starting from 1.
112 + In this way, multiple output pictures may be produced,
113 + or separate results vector (one per time step).
114   .SH EXAMPLES
115   To compute workplane illuminances at 3:30pm on Feb 10th:
116   .IP "" .2i
# Line 88 | Line 131 | gensky 6 21 12 | genskyvec | dctimestep view%03d.hdr B
131   .SH AUTHOR
132   Greg Ward
133   .SH "SEE ALSO"
134 < genklemsamp(1), genskyvec(1), mkillum(1), rtcontrib(1), rtrace(1), vwrays(1)
134 > genklemsamp(1), genskyvec(1), mkillum(1), rcontrib(1), rtrace(1), vwrays(1)

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