refraction_render.renderers.land_model¶

class refraction_render.renderers.land_model(ellps='sphere')[source]¶

Bases: object

This class is used to grab slices of the tarrain alon great circle slices of the earth.

__init__(ellps='sphere')[source]¶

Simple wrapper which does the bilinear interpolation of terrain data.

Parameters

ellps: str, optional: String representing which pyproj datum to use for the data being interpolated.

Methods

`__init__`([ellps])	Simple wrapper which does the bilinear interpolation of terrain data.
`add_elevation_data`(*args[, smooth])	Add terrain data to the interpolated model.
`get_terrain`(lat, lon, heading, dist)	Sample terrain along geodesic defined by an intial latitude and longitude point along a heading at different distances.

Attributes

flag if True the terrain object has land else it has no land.

add_elevation_data(*args, smooth=False)[source]¶

Add terrain data to the interpolated model.

Parameters

args: tuple: tuple which contains elevation data: if len(args) == 3: args = (lats,lons,elevation) which contains the regular grid values and elevation values on that grid. if len(args) == 2: args = (points,elevation) which contains unstructured collection of points for the elevation data.
smooth: bool, optional: If True, then use 3rd order bivariate spline to interpolate data, otherwise use faster linear interpolation. default is False.

get_terrain(lat, lon, heading, dist)[source]¶

Sample terrain along geodesic defined by an intial latitude and longitude point along a heading at different distances.

Parameters

lat: array_like: latitude(s) which starting point(s) begin at
lon: array_like: longitude(s) which starting point(s) begin at
heading: array_like: heading(s) which determine which direction to go on the spheriod
dist: array_like: distance(s) in meters of how far to go along the heading

Notes

This function follows NumPy’s broadcasting rules for handing arguments of different shapes.

property has_data¶: flag if True the terrain object has land else it has no land.