Documentation

geo.strictFilter() function

geo.strictFilter() is experimental and subject to change at any time.

geo.strictFilter() filters data by latitude and longitude in a specified region.

This filter is more strict than geo.gridFilter(), but for the best performance, use geo.strictFilter() after geo.gridFilter(). Input rows must have lat and lon columns.

Function type signature
(<-tables: stream[{B with lon: D, lat: C}], region: A) => stream[{B with lon: D, lat: C}] where A: Record
For more information, see Function type signatures.

Parameters

region

(Required) Region containing the desired data points.

Specify record properties for the shape.

tables

Input data. Default is piped-forward data (<-).

Examples

Strictly filter data to a specified region

import "experimental/geo"

data
    |> geo.strictFilter(region: {lat: 40.69335938, lon: -73.30078125, radius: 50.0})

View example input and output


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