topic Re: Utility Network Trace results in ArcGIS JavaScript Maps SDK Questions

Utility Network Trace results

NarendranathMandal — Mon, 20 Nov 2023 12:03:48 GMT

When running the Utility network trace widget, the results will be added as graphics.

How to get the graphics results data in the console ?

I tried to trigger the events which is documented in the api documentation add-result-area. But the event is not working.

Here my code is below

utilityNetworkTrace.on('add-result-area', getResult)

function getResult() {}

Reference URL

https://developers.arcgis.com/javascript/latest/api-reference/esri-widgets-UtilityNetworkTrace.html#events-summary

Re: Utility Network Trace results

AlixVezina — Mon, 20 Nov 2023 15:16:15 GMT

@NarendranathMandal , right now the result graphics are only created when they are shown in the view, see #resultAreaProperties

Could that be the reason you are not getting the results in the console?

Re: Utility Network Trace results

NarendranathMandal — Wed, 22 Nov 2023 11:13:17 GMT

I have included that show properties in UtilityNetworkTrace. But still I am not getting the graphics results in the console.

Re: Utility Network Trace results

AlixVezina — Wed, 22 Nov 2023 14:29:34 GMT

Also refer to related post: Utility Network Trace Result - Esri Community

Re: Utility Network Trace results

AlixVezina — Wed, 22 Nov 2023 14:30:15 GMT

@NarendranathMandal Many people are out of the office this week, we'll get back to you with a resolution or more questions next week.

Re: Utility Network Trace results

PrevinWong1 — Mon, 27 Nov 2023 18:12:27 GMT

@NarendranathMandal can you confirm that a polygon result area is drawn in the map after a trace is run and you toggle on the result area?

Also in your function, you need a parameter since the event emits a graphic.

function getResult(graphic) {console.log(graphic)}

Re: Utility Network Trace results

NarendranathMandal — Wed, 29 Nov 2023 06:16:08 GMT

Yes . a polygon result area is drawn in the map , Only the function is not getting trigger .

Re: Utility Network Trace results

NarendranathMandal — Wed, 29 Nov 2023 07:21:48 GMT

<!DOCTYPE html>

<head>

<meta

name="viewport"

content="initial-scale=1,maximum-scale=1,user-scalable=no"

<title>

UtilityNetworkTrace widget | Sample | ArcGIS Maps SDK for JavaScript 4.28

</title>

<link

rel="stylesheet"

href="https://js.arcgis.com/4.28/esri/themes/light/main.css"

<style>

html,

body,

#viewDiv {

padding: 0;

margin: 0;

height: 100%;

width: 100%;

}

</style>

require([

"esri/WebMap",

"esri/views/MapView",

"esri/widgets/UtilityNetworkTrace",

"esri/config",

"esri/widgets/LayerList",

"esri/core/reactiveUtils"

], (WebMap, MapView, UtilityNetworkTrace, esriConfig, LayerList, reactiveUtils) => {

// Set the hostname to the on-premise portal

// Enterprise example: esriConfig.portalUrl = "https://myHostName.esri.com/arcgis";

esriConfig.portalUrl = "https://www.arcgis.com"; // this is the default

// Initialize the WebMap and pass in the webmap id

// Credentials to sign in to the webmap:

// username: viewer01

// password: I68VGU^nMurF

const webmap = new WebMap({

portalItem: {

// autocasts as new PortalItem()

id: "471eb0bf37074b1fbb972b1da70fb310" // webmap id

}

});

// Initialize the view

const view = new MapView({

container: "viewDiv",

map: webmap

});

const layerlist = new LayerList({

view: view

})

view.ui.add(layerlist, {position: 'top-left'})

// Initialize the UtilityNetworkTrace widget without any set parameters

const utilityNetworkTrace = new UtilityNetworkTrace({

view: view,

});

// Add the widget to the view

view.ui.add(utilityNetworkTrace, "top-right");

utilityNetworkTrace.on('add-result-area', test) // working

//utilityNetworkTrace.on('add-result-area', test) // not working

reactiveUtils.watch(() => view.layerViews, () => {

alert('testing')

})

function test(graphic){

console.log(graphic)

alert('testing')

}

});

</script>

</head>

<body>

</body>

</html>

This is the code for your reference .

The fuction itself is not getting call

Re: Utility Network Trace results

PrevinWong1 — Wed, 29 Nov 2023 16:24:37 GMT

In your UtilityNetworkTrace constructor, make sure you have enableResultArea defined and set to TRUE. The you will see the result area toggle, at which point, if you toggle, it fires the callback. See images below.

const utilityNetworkTrace = new UtilityNetworkTrace({

view: view,

enableResultArea: true

});

Re: Utility Network Trace results

NarendranathMandal — Thu, 30 Nov 2023 10:17:26 GMT

Thank You , I got the area . Any idea how i can get the atributes print in the console or export the atributes from the trace result ?

Re: Utility Network Trace results

NarendranathMandal — Thu, 18 Jan 2024 06:51:38 GMT

Hi ,

How can i export the trace result using javascript .

Re: Utility Network Trace results

PrevinWong1 — Thu, 18 Jan 2024 17:13:55 GMT

Hi,

If you are calling methods on the widget directly in your code, make sure you call https://developers.arcgis.com/javascript/latest/api-reference/esri-widgets-UtilityNetworkTrace-UtilityNetworkTraceViewModel.html#addResultAreaToMap
so that your watching on the emit will get fired.

You can also access or watch the resultArea property to get results of the trace as well at any time after a trace is run.
https://developers.arcgis.com/javascript/latest/api-reference/esri-widgets-UtilityNetworkTrace-UtilityNetworkTraceViewModel.html#traceResults
console.log(utilityNetworkTrace.viewModel.traceResults)

Or if you want to watch when it changes

https://developers.arcgis.com/javascript/latest/api-reference/esri-core-reactiveUtils.html
reactiveUtils.watch( () => utilityNetworkTrace.viewModel.traceResults.length, () => { //your code });