shade_lambert: Function for calculation of lambert shading (also known as...
In JanCaha/rasterShade: Wrapper around rayshader package

This function is just a wrapper around lamb_shade that supports directly using Raster in the function. The function also tries to set "reasonable" default values for parameters.

shade_lambert_date_time(
  surface_raster,
  date = as.character(Sys.Date()),
  time = "noon",
  tzone = "UTC",
  only_facing_sun = FALSE,
  z_value = 1,
  verbose = FALSE
)

shade_lambert_sun_position(
  surface_raster,
  sun_elevation = 45,
  sun_azimuth = 180,
  only_facing_sun = FALSE,
  z_value = 1,
  verbose = FALSE
)

`surface_raster`	Object of class Raster.
`date`	Date specified as `character` in form `YYYY-MM-DD`. Default value is `Sys.Date`.
`time`	Either character representation of time (in format `HH:MM:SS`), or `hms` class, or one of text values: `"noon", "sunrise", "sunset", "goldenHour", "goldenHourEnd"`. The textual representation is used to determine sun elevation using function `getSunlightPosition`. Value `"sunrise"` represents end of sunrise, while `"sunset"` represents start of sunset. Default value is `"noon"`.
`tzone`	a character string that specifies which time zone to parse the date with. The string must be a time zone that is recognized by the user's OS. If no time zone is given the default value `"UTC"` is used. Default value `"UTC"`.
`only_facing_sun`	Boolean value specifing if the value should be determined for all parts of the surface or only for parts oriented towards sun. Default value is FALSE, which means that it is calculated for all parts of the surface.
`z_value`	numeric value indicating the scale between xy and z. Typical use is if the distance is measured in meters and elevation in foots, in such case the z value needs to be recalculated to meters. Default value is `1`, which means that both measures use the same units.
`verbose`	Should informative message be printed? Default `FALSE`.
`sun_elevation`	Numeric value, from range 0 - 90, with 0 being sun elevation directly on horizon while 90 means that sun is directly above the surface. Default value is `45`.
`sun_azimuth`	Numeric value that specifies azimuth from which the sun is shining on the surface. Value has to be from the range 0 - 360. Default value is `180`.