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@turf/interpolate
Advanced tools
Takes a set of points and estimates their 'property' values on a grid using the Inverse Distance Weighting (IDW) method.
points
FeatureCollection<Point> with known value
cellSize
number the distance across each grid point
options
Object Optional parameters (optional, default {}
)
options.gridType
string defines the output format based on a Grid Type (options: 'square' | 'point' | 'hex' | 'triangle') (optional, default 'square'
)options.property
string the property name in points
from which z-values will be pulled, zValue fallbacks to 3rd coordinate if no property exists. (optional, default 'elevation'
)options.units
string used in calculating cellSize, can be degrees, radians, miles, or kilometers (optional, default 'kilometers'
)options.weight
number exponent regulating the distance-decay weighting (optional, default 1
)var points = turf.randomPoint(30, {bbox: [50, 30, 70, 50]});
// add a random property to each point
turf.featureEach(points, function(point) {
point.properties.solRad = Math.random() * 50;
});
var options = {gridType: 'points', property: 'solRad', units: 'miles'};
var grid = turf.interpolate(points, 100, options);
//addToMap
var addToMap = [grid];
Returns FeatureCollection<(Point | Polygon)> grid of points or polygons with interpolated 'property'
This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.
Install this single module individually:
$ npm install @turf/interpolate
Or install the all-encompassing @turf/turf module that includes all modules as functions:
$ npm install @turf/turf
FAQs
turf interpolate module
The npm package @turf/interpolate receives a total of 299,406 weekly downloads. As such, @turf/interpolate popularity was classified as popular.
We found that @turf/interpolate demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 9 open source maintainers collaborating on the project.
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