Isolation check

Stations that are isolated in space (i.e. no nearby stations) are difficult to QC with spatial methods. In many cases, these should be removed since we have no independent information to verify their accuracy.

The isolation check flags stations that have fewer than num_min buddies within a specified radius [m].

Input parameters

Parameter	Type	Unit	Description
points	Points		Point object with station position
num_min	int / ivec		required number of observations
radius	float / vec	m	search radius
vertical_radius	float / vec	m	Vertical search radius

There are two versions of the isolation check, one where all the inputs are scalar (i.e. int and float) or where the inputs are vectors.

Returned parameters

Parameter	Type	Unit	Description
flags	ivec		vector of return flags

Example

radius = 15000
num_min = 5
flags = titanlib.isolation_check(points, num_min, radius)

# R code
radius = 15000 # m
num_min = 5
flags = isolation_check(points, num_min, radius)