| 7 |
|
[ |
| 8 |
|
.B "\-v" |
| 9 |
|
][ |
| 10 |
+ |
.B "\-h" |
| 11 |
+ |
][ |
| 12 |
+ |
.B "\-A" |
| 13 |
+ |
][ |
| 14 |
|
.B "\-d|\-s" |
| 15 |
|
][ |
| 16 |
|
.B "\-r deg" |
| 22 |
|
.B "\-c r g b" |
| 23 |
|
][ |
| 24 |
|
.B "-o{f|d}" |
| 25 |
+ |
][ |
| 26 |
+ |
.B "-O{0|1}" |
| 27 |
|
] |
| 28 |
|
[ |
| 29 |
|
.B "tape.wea" |
| 55 |
|
yield 8760x3 (26280) values per output line (row). |
| 56 |
|
.PP |
| 57 |
|
The |
| 58 |
+ |
.I \-A |
| 59 |
+ |
option tells |
| 60 |
+ |
.I gendaymtx |
| 61 |
+ |
to generate a single column corresponding to an average sky |
| 62 |
+ |
computed over all the input time steps, rather than one |
| 63 |
+ |
column per time step. |
| 64 |
+ |
.PP |
| 65 |
+ |
The |
| 66 |
|
.I \-c |
| 67 |
|
option may be used to specify a color for the sky. |
| 68 |
< |
The gray value should equal 1 for proper energy balance |
| 68 |
> |
The gray value should equal 1 for proper energy balance. |
| 69 |
|
The default sky color is |
| 70 |
|
.I "\-c 0.960 1.004 1.118". |
| 71 |
|
Similarly, the |
| 77 |
|
.PP |
| 78 |
|
The |
| 79 |
|
.I \-d |
| 80 |
< |
option may be used to produce a sun-only matrix, with no sky contributions. |
| 80 |
> |
option may be used to produce a sun-only matrix, with no sky contributions, |
| 81 |
> |
and the ground patch also set to zero. |
| 82 |
|
Alternatively, the |
| 83 |
|
.I \-s |
| 84 |
< |
option may be used to exclude any direct solar component from the output. |
| 84 |
> |
option may be used to exclude any direct solar component from the output, |
| 85 |
> |
with the rest of the sky and ground patch unaffected. |
| 86 |
> |
If there is a sun in the description, |
| 87 |
> |
.I gendaymtx |
| 88 |
> |
will include its contribution in the four nearest sky patches, |
| 89 |
> |
distributing energy according to centroid proximity. |
| 90 |
|
.PP |
| 91 |
+ |
By default, |
| 92 |
+ |
.I gendaymtx |
| 93 |
+ |
assumes the positive Y-axis points north such that the first sky patch |
| 94 |
+ |
is in the Y-axis direction on the horizon, the second patch is just |
| 95 |
+ |
west of that, and so on spiraling around to the final patch near the zenith. |
| 96 |
|
The |
| 97 |
|
.I \-r |
| 98 |
|
(or |
| 99 |
|
.I \-rz) |
| 100 |
|
option rotates the sky the specified number of degrees counter-clockwise |
| 101 |
< |
about the zenith, i.e., east of South. |
| 101 |
> |
about the zenith, i.e., west of north. |
| 102 |
|
This is in keeping with the effect of passing the output of |
| 103 |
|
.I gensky(1) |
| 104 |
|
or |
| 115 |
|
This is much faster to write and to read, and is therefore preferred on |
| 116 |
|
systems that support it. |
| 117 |
|
(MS Windows is not one of them.)\0 |
| 118 |
+ |
The |
| 119 |
+ |
.I \-O1 |
| 120 |
+ |
option specifies that output should be total solar radiance rather |
| 121 |
+ |
than visible radiance. |
| 122 |
+ |
The |
| 123 |
+ |
.I \-h |
| 124 |
+ |
option prevents the output of the usual header information. |
| 125 |
|
Finally, the |
| 126 |
|
.I \-v |
| 127 |
|
option will enable verbose reporting, which is mostly useful for |
| 143 |
|
based on Jean-Jacques Delaunay's original gendaylit(1) implementation. |
| 144 |
|
Greg Ward wrote the final parameter parsing and weather tape conversion. |
| 145 |
|
.SH "SEE ALSO" |
| 146 |
< |
dctimestep(1), genBSDF(1), gendaylit(1), gensky(1), genskyvec(1), rcontrib(1), |
| 147 |
< |
xform(1) |
| 146 |
> |
dctimestep(1), genBSDF(1), gendaylit(1), gensky(1), genskyvec(1), |
| 147 |
> |
rcollate(1), rcontrib(1), xform(1) |
