lines_from_las: Calculate pahts from a raster
In KNMI-DataLab/SkyViewFactor: Calculate the Sky view factor from las files

calculate_path calculates the path for given distance, angles and coordinates from a raster file. A test file in the folder test_data with test parameters is included.

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lines_from_las(LAS = testTile, pro = CRS("+init=epsg:28992"), xres = 5,
  yres = 5, field = "Z", point = testPoint, R = 200,
  Runcertainty = 10, theta = c(5, 10, 30))

`LAS`	location of the las file to read
`pro`	projection, now only 28992 (RDcoordinates) is excepted
`xres`	x-resolution to grid the las points
`yres`	y-resolution to grid the las points
`field`	field to grid
`point`	location for which the lines are calculated
`R`	radius for which the line is calculated
`Runcertainty`	can be used if the location coordinates are uncertain or if you want a surrounding area
`theta`	angles for which the path is calculated