| 68 |
|
.I \-s |
| 69 |
|
option may be used to exclude any direct solar component from the output. |
| 70 |
|
.PP |
| 71 |
+ |
By default, |
| 72 |
+ |
.I gendaymtx |
| 73 |
+ |
assumes the positive Y-axis points north such that the first sky patch |
| 74 |
+ |
is in the Y-axis direction on the horizon, the second patch is just |
| 75 |
+ |
west of that, and so on spiraling around to the final patch near the zenith. |
| 76 |
|
The |
| 77 |
|
.I \-r |
| 78 |
|
(or |
| 79 |
|
.I \-rz) |
| 80 |
|
option rotates the sky the specified number of degrees counter-clockwise |
| 81 |
< |
about the zenith, i.e., east of South. |
| 81 |
> |
about the zenith, i.e., west of north. |
| 82 |
|
This is in keeping with the effect of passing the output of |
| 83 |
|
.I gensky(1) |
| 84 |
|
or |
