topic Re: @arcgis/core - Find distance between 2 points in ArcGIS JavaScript Maps SDK Questions

@arcgis/core - Find distance between 2 points

MosheLevi — Sun, 04 Dec 2022 13:48:41 GMT

Hi, I am use @arcgis/core package in Angular framework.

I want to calculate distance between 2 points by lat and lng of each point using this package.

I guess that i need something like described in this link. But i don't know how to convert this to the ESM approach.

I guess that i need to import the packages like below, but i don't know how to continue from there.

Any help will be appreciated.

Note that i have no need to draw Map. I need just the calculation.

import * as GeometryService from "@arcgis/core/geometry";

import Point from "@arcgis/core/geometry/Point";

import Map from "@arcgis/core/Map";

import SpatialReference from "@arcgis/core/geometry/SpatialReference";

import DistanceParameters from "@arcgis/core/rest/support/DistanceParameters";

Re: @arcgis/core - Find distance between 2 points

ReneRubalcava — Mon, 05 Dec 2022 00:13:10 GMT

You can use the geometry engine for this, no need to go to the service.

https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-geometryEngine.html#distance

Here's a sample where it's dynamically imported and used.

https://github.com/odoe/nearby-app-vanilla/blob/main/src/app.ts#L50-L71

Re: @arcgis/core - Find distance between 2 points

MosheLevi — Mon, 05 Dec 2022 08:31:30 GMT

First of all, thank you very much for your response!

Actually, I need to calculate a distance of driving or walking (routing).
From what I understand, the distance function calculates Planar distance.

I'm sorry I didn't explain it in advance properly

Re: @arcgis/core - Find distance between 2 points

MosheLevi — Mon, 05 Dec 2022 11:27:05 GMT

After more searching, i find out this page witch seems to fit what i need.

I just don't understand what it is the:

portalItem: { id: "69569b47b1e445b8a42ec12feab41ce9" }

I try to replace this to list of stops (that this what i actually need) like this:

const stops = [

new Stop({ geometry: { latitude: 32.180763, longitude: 34.929558 } }),

new Stop({ geometry: { latitude: 31.9339, longitude: 34.8878 } })

];

const routeLayer = new RouteLayer({

stops,

// portalItem: {

// id: "69569b47b1e445b8a42ec12feab41ce9"

// }

});

But then, the 'routeLayer.routeInfo' is null.

What am i missing?

Re: @arcgis/core - Find distance between 2 points

BlakeTerhune — Mon, 05 Dec 2022 15:38:34 GMT

The portalItem id is the item in Portal for ArcGIS that is the routeLayer, which looks as though you can create it from stops.

// A minimum of two stops is required for routing. const stops = [ new Stop({ geometry: { latitude: 32.180763, longitude: 34.929558 } }), new Stop({ geometry: { latitude: 31.9339, longitude: 34.8878 } }) ]; // Create route layer and assign the stops. Only solved routelayers will be rendered. const routeLayer = new RouteLayer({ stops });

Re: @arcgis/core - Find distance between 2 points

ReneRubalcava — Mon, 05 Dec 2022 18:41:39 GMT

Once you create the route layer, you need to call the solve method to get your route and features

https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-RouteLayer.html#solve

Then you can get the routeInfo and it will have a totalDistance value you can use

https://developers.arcgis.com/javascript/latest/api-reference/esri-rest-support-RouteInfo.html#totalDistance