turf-isobands
turf isobands module
turf.isobands(points, z, resolution, breaks)
Takes a FeatureCollection of points with z values and an array of value breaks and generates filled contour isobands. These are commonly used to create elevation maps, but can be used for general data interpolation as well.
Parameters
parameter | type | description |
---|---|---|
points |
FeatureCollection | |
z |
string | - a property name from which z values will be pulled |
resolution |
number | - resolution of the underlying grid |
breaks |
Array. | - where to draw contours |
Example
// create random points with random// z-values in their propertiesvar points = turf;for var i = 0; i < pointsfeatureslength; i++ pointsfeaturesipropertiesz = Math * 10;var breaks = 0 1 2 3 4 5 6 7 8 9 10;var isolined = turf;//=isolined
Returns FeatureCollection
, isolines
Installation
Requires nodejs.
$ npm install turf-isobands
Tests
$ npm test