How to use the turf.inside function in turf
To help you get started, we’ve selected a few turf examples, based on popular ways it is used in public projects.
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ProgressiveMass / legislator-scorecard / src / abandoned / getDistrict.js View on Github 
const matches = massSenate.features.filter((f) => {
// f is already a geojson polygon
return turf.inside(point, f)
})let [lon, lat] = utils.xyzToLonLat(x, y, z);
let point = {
geometry: {
type: 'Point',
coordinates: [lon, lat]
}
};
// Get the N nearest points.
let nn = knn(this.tree, [lon, lat], 20);
let country = null;
// Probe for a parent country.
for (let n of nn) {
if (turf.inside(point, n.feature)) {
country = n.feature;
break;
}
}
return country;
}intersects.forEach((d,i) => {
const At = Turf.area(feature);
const Ast = Turf.area(d);
const Qt = feature.properties[options.weight];
const Qst = (Ast / At) * Qt;
const attributeValue = parseFloat(sourceFeatures[i].properties[options.attr]);
// wenn komplett im source feature,
const sb = Turf.extent(sourceFeatures[i]);
let isInside = true;
if(!Turf.inside(Turf.point([sb[0], sb[1]]), d)) { isInside = false };
if(!Turf.inside(Turf.point([sb[2], sb[3]]), d)) { isInside = false };
if(isInside) {
if(!isNaN(attributeValue)) {
result += Ps;
}
return;
}
if(!isNaN(attributeValue)) {
result += (Qst / sourceFeatures[i].properties["Qs"]) * attributeValue;
}
});}
demand.push(dim);
}
var landmark_polygons_of_interest = {"JFK Airport": 0, "LaGuardia Airport": 0, "Grand Central": 0, "Port Authority Bus Terminal": 0, "Penn Station": 0};
var landmark_scalers = {"JFK Airport": 11000.0, "LaGuardia Airport": 9000.0, "Grand Central": 2000.0, "Port Authority Bus Terminal": 1000.0, "Penn Station": 2000.0};
for (landmark_index = 0; landmark_index < landmarks_data["features"].length; landmark_index++) {
var landmark = landmarks_data["features"][landmark_index];
var landmark_name = landmark["properties"]["name"];
if (landmark_name in landmark_polygons_of_interest) {
//console.log(landmark["geometry"]["coordinates"]);
var landmark_polygon = turf.polygon(landmark["geometry"]["coordinates"]);
landmark_polygons_of_interest[landmark_name] = landmark_polygon;
var landmark_centroid = turf.centroid(landmark_polygon);
console.log("Landmark "+landmark_name+" centroid in polygon: "+turf.inside(landmark_centroid, landmark_polygon));
}
}
console.log("Calculating centroids");
var centroids = [];
for (tract_index = 0; tract_index < data.features.length; tract_index++) {
var turf_centroid = turf.centroid(data.features[tract_index]);
//var tract_area = turf.area(turf_polygons[tract_index]);
centroids[tract_index] = turf_centroid;
}
console.log("Calculating voxels");
for (i = 0; i < voxels_dim; i++) {
var lat = lat_min + voxels_res_lat*i;
for (j = 0; j < voxels_dim; j++) {var overlap_area = turf.area(overlap_polygon);
var tract_area = turf.area(tract);
if (ct2010 in populations) {
d += populations[ct2010] * overlap_area/tract_area;
} else {
d += 1000.0 * overlap_area/tract_area;
}
}
}
}
var voxel_center = turf.point([lon + voxels_res_lon/2.0, lat + voxels_res_lat/2.0]);
for (lpoi in landmark_polygons_of_interest) {
if (turf.inside(voxel_center, landmark_polygons_of_interest[lpoi])) {
console.log("Inside "+lpoi);
d += 500.0;
}
}
//console.log(d);
demand[i][j] = d;
//console.log("Finished voxel "+(j+(i*voxels_dim))+" of "+voxels_total);
bar.tick();
if (bar.complete) {
console.log('complete!');
}
}
} .filter(pt => turf.inside(pt, polygon));feature = turf.polygon([arr2])
}
var result = !expect
if (obj.geometry.type == "Point" && type == "Point") {
result = (obj.geometry.coordinates[0] == feature.geometry.coordinates[0] && obj.geometry.coordinates[1] == feature.geometry.coordinates[1])
}
if (obj.geometry.type == "Polygon" && type == "Polygon") {
result = (turf.intersect(obj, feature) != undefined)
}
if (obj.geometry.type == "Point" && type == "Polygon") {
result = (turf.inside(obj, feature))
}
if (obj.geometry.type == "Polygon" && type == "Point") {
result = (turf.inside(feature, obj))
}
if (obj.geometry.type == "LineString" && type == "Polygon"){
result = false
var linestring = turf.linestring(feature.geometry.coordinates[0])
if(lineIntersect(linestring.geometry, obj.geometry)){
result = true
} else {
for (var i = 0; i < obj.geometry.coordinates.length; i++) {
point = turf.point(obj.geometry.coordinates[i])
if(turf.inside(point, feature)){
result = true
break
}
}
}result = true
break
}
}
}
}
if (obj.geometry.type == "Polygon" && type == "LineString"){
result = false
var linestring = turf.linestring(obj.geometry.coordinates[0])
if(lineIntersect(linestring.geometry, feature.geometry)){
result = true
} else {
for (var i = 0; i < feature.geometry.coordinates.length; i++) {
point = turf.point(feature.geometry.coordinates[i])
if(turf.inside(point, obj)){
result = true
break
}
}
}
}
if (obj.geometry.type == "LineString" && type == "LineString"){
if(lineIntersect(obj.geometry, feature.geometry)){
result = true
}
}
return (expect == result)
}var updates = this.editFeatures(layers, function(bbox, gj, layer) {
if (gj.geometry.type === 'Point') {
if (turf.inside(gj, bbox)) {
gj.selected = true
}
} else if (gj.geometry.type === 'LineString') {
for (var i = 0; i < gj.geometry.coordinates.length; i++) {
var pt = turf.point(gj.geometry.coordinates[i])
if (turf.inside(pt, bbox)) {
gj.selected = true
}
}
} else if (gj.geometry.type === 'Polygon') {
if (turf.intersect(gj, bbox)) {
gj.selected = true
}
}
return gj
}.bind(null, bbox))
LayerActions.updateList(updates)'turf.inside + turf.bboxPolygon': function () {
for (var i = 0; i < points.length; i++) {
turf.inside(turf.point(points[i]), turf.bboxPolygon(bboxes[i]));
}
},
'ruler.insideBBox': function () {turf
a JavaScript library for performing geospatial operations with GeoJSON
