Sun Vectors - [source code]

Sun positions for a period at a chosen time step (6-minute and finer), from site and clock rather than from an EPW's hourly rows.

Name	Nickname	Description	Type
Weather	W	Optional weather object; Latitude, Longitude and Time Zone are read from it when connected, and override the numeric inputs below.	`Generic Data`
Latitude	Lat	Degrees north.	`Number`
Longitude	Lon	Degrees east.	`Number`
Time Zone	TZ	Hours ahead of UTC, STANDARD time — not the summer offset.	`Number`
From Month	FM	Start month [1-12].	`Integer`
From Day	FD	Start day [1-31].	`Integer`
To Month	TM	End month [1-12], inclusive.	`Integer`
To Day	TD	End day [1-31], inclusive.	`Integer`
Start Hour	SH	First hour of day [0-23].	`Integer`
End Hour	EH	Last hour of day, exclusive [1-24].	`Integer`
Timestep	TS	Samples per hour. 1 = hourly (the old behaviour), 10 = a 6-minute step. Cost is linear in this: 10x the samples really is 10x the rays.	`Integer`
North	Nth	Counter-clockwise degrees from the model's +Y axis to true north (Ladybug's convention).	`Number`
Daylight Saving	DST	Treat the hour window as summer clock time. EPW data is standard time, so leave this off when matching a weather file.	`Boolean`
Elevation Cutoff	EC	Drop samples at or below this solar elevation. 0 keeps everything above the horizon; raise it to ignore the grazing sun that refraction makes unreliable.	`Number`

Name	Nickname	Description	Type
Sun Vectors	SV	Sun samples — direction, the hours each represents, and the instant sampled. Feeds Sun Path. The analysis components read a weather record directly instead.	`Generic Data`
Directions	D	The same directions as plain vectors, for drawing.	`Vector`
Hours	H	Hours each sample represents. Sums to the daylight in the period.	`Number`
Report	R	Sample count, daylight hours and the step used.	`Text`