clear graphics in stream layer Web App builder code

MRReddy · ‎03-18-2019

Hi

I have a stream layer configured in web app builder.

data is related to ongoing trips tracking. stream layer only gets data related to active trips.

map is not clearing previous trips data(point)

can anyone suggest me where to clear the map graphics

Thanks

MRReddy · ‎03-18-2019

it solved by below lines in stream layer object

purgeOptions: {

displayCount: 2000,

age: 2.5

}

View solution in original post

RobertScheitlin__GISP · ‎03-18-2019

https://developers.arcgis.com/javascript/3/jsapi/streamlayer-amd.html#clear

MRReddy · ‎03-18-2019

hi Robert thanks for your reply, can we able to add this line in WAB code or need to create a custom application

Thanks

RobertScheitlin__GISP · ‎03-18-2019

Are you talking about a WAB app hosted on AGOL?

MRReddy · ‎03-18-2019

I downloaded WAB code from online, I'm trying to clear graphics clear in that code

RobertScheitlin__GISP · ‎03-18-2019

Then yes it will require custom development to add that line.

MRReddy · ‎03-18-2019

Robert, I created a custom html page, where I need to add clear graphics line

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no" />

<title>StreamLayer-Simple</title>

<link rel="stylesheet" href="https://js.arcgis.com/3.27/esri/css/esri.css">

<style type="text/css">

html,

body {

height: 100%;

width: 100%;

margin: 0;

padding: 0;

overflow: hidden;

}

.banner {

margin-top: 5px;

margin-bottom: 5px;

color: #000080;

font-size: 2em;

font-weight: bold;

}

#mapDiv {

height: 90%;

width: 100%;

margin: 0;

padding: 0;

overflow: hidden;

}

</style>

<script src="https://js.arcgis.com/3.27/"></script>

</head>

<body>

<div class="banner">

Scooter Data Stream Feed

</div>

<div id="mapDiv"></div>

</body>

<script type="text/javascript">

require([

"esri/map",

"esri/InfoTemplate",

"esri/layers/StreamLayer",

"dojo/domReady!"

 ], function(Map, InfoTemplate, StreamLayer){

var url = "http://abc.123.com/arcgis/rest/services/StatusinputStream/StreamServer";

var streamLayer = new StreamLayer(url, {

infoTemplate: new InfoTemplate("Attributes", "${*}")

});

var map = new Map("mapDiv", {

basemap: "topo",

center: [-90, 50],

zoom: 13

});

map.addLayer(streamLayer);

});

</script>

</html>
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RobertScheitlin__GISP · ‎03-18-2019

Then just call the clear method on the streamLayer object.

MRReddy · ‎03-18-2019

it solved by below lines in stream layer object

purgeOptions: {

displayCount: 2000,

age: 2.5

}