GIS

Functions for computing geographic coordinates.

cuspatial.haversine_distance(p1_lon, p1_lat, p2_lon, p2_lat)

Compute the haversine distances in kilometers between an arbitrary list of lon/lat pairs

Parameters

p1_lon

longitude of first set of coords

p1_lat

latitude of first set of coords

p2_lon

longitude of second set of coords

p2_lat

latitude of second set of coords

Returns

resultcudf.Series

The distance between all pairs of lon/lat coordinates

cuspatial.lonlat_to_cartesian(origin_lon, origin_lat, input_lon, input_lat)

Convert lon/lat to x,y coordinates with respect to an origin lon/lat point. Results are scaled relative to the size of the Earth in kilometers.

Parameters

origin_lonnumber

longitude offset (this is subtracted from each input before converting to x,y)

origin_latnumber

latitude offset (this is subtracted from each input before converting to x,y)

input_lonSeries or list

longitude coordinates to convert to x

input_latSeries or list

latitude coordinates to convert to y

Returns

resultcudf.DataFrame

xcudf.Series

x-coordinate of the input relative to the size of the Earth in kilometers.

ycudf.Series

y-coordinate of the input relative to the size of the Earth in kilometers.

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