Adapt tutorial for alternative spatial reference

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06-22-2020 02:17 PM
JasonWood
New Contributor II

I'm working from the tutorial here:

Display point, line, and polygon graphics | ArcGIS for Developers 

And wondering how to adapt this if my coordinates are in a different spatial reference. I have the wkid.

Thank you!

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RobertScheitlin__GISP
MVP Esteemed Contributor

Jason,

   You just have to project your data's spatial(SR) reference to the views SR.

Here is the updated sample code:

<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>ArcGIS JavaScript Tutorials: Create a Starter App</title>
<style>
html, body, #viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>

<link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/themes/light/main.css">
<script src="https://js.arcgis.com/4.15/"></script>

<script>
require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/layers/GraphicsLayer",
"esri/geometry/Point",
"esri/tasks/GeometryService",
"esri/tasks/support/ProjectParameters",
"esri/geometry/SpatialReference"
], function(Map, MapView, Graphic, GraphicsLayer, Point, GeometryService, ProjectParameters, SpatialReference) {

var map = new Map({
basemap: "topo-vector"
});

var view = new MapView({
container: "viewDiv",
map: map,
center: [-85.8337, 33.6531],
zoom: 13
});

var graphicsLayer = new GraphicsLayer();
map.add(graphicsLayer);

var point = Point({
type: "point",
x: 656036.27,
y: 1147053.29,
spatialReference: new SpatialReference({wkid:102629})
});

var simpleMarkerSymbol = {
type: "simple-marker",
color: [226, 119, 40], // orange
outline: {
color: [255, 255, 255], // white
width: 1
}
};

// Create attributes
var attributes = {
Name: "SO", // The name of the
Location: "The Calhoun County Sheriff's Office",
};
// Create popup template
var popupTemplate = {
title: "{Name}",
content: "I am located at <b>{Location}</b>."
};

var geomSer = new GeometryService({url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'});
var params = new ProjectParameters({
geometries: [point],
outSpatialReference: new SpatialReference({wkid:102100})
});

geomSer.project(params).then(function(geom){
var pointGraphic = new Graphic({
geometry: point,
symbol: simpleMarkerSymbol,
attributes: attributes,
popupTemplate: popupTemplate
});

graphicsLayer.add(pointGraphic);
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>

View solution in original post

3 Replies
RobertScheitlin__GISP
MVP Esteemed Contributor

Jason,

   You just have to project your data's spatial(SR) reference to the views SR.

Here is the updated sample code:

<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>ArcGIS JavaScript Tutorials: Create a Starter App</title>
<style>
html, body, #viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>

<link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/themes/light/main.css">
<script src="https://js.arcgis.com/4.15/"></script>

<script>
require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/layers/GraphicsLayer",
"esri/geometry/Point",
"esri/tasks/GeometryService",
"esri/tasks/support/ProjectParameters",
"esri/geometry/SpatialReference"
], function(Map, MapView, Graphic, GraphicsLayer, Point, GeometryService, ProjectParameters, SpatialReference) {

var map = new Map({
basemap: "topo-vector"
});

var view = new MapView({
container: "viewDiv",
map: map,
center: [-85.8337, 33.6531],
zoom: 13
});

var graphicsLayer = new GraphicsLayer();
map.add(graphicsLayer);

var point = Point({
type: "point",
x: 656036.27,
y: 1147053.29,
spatialReference: new SpatialReference({wkid:102629})
});

var simpleMarkerSymbol = {
type: "simple-marker",
color: [226, 119, 40], // orange
outline: {
color: [255, 255, 255], // white
width: 1
}
};

// Create attributes
var attributes = {
Name: "SO", // The name of the
Location: "The Calhoun County Sheriff's Office",
};
// Create popup template
var popupTemplate = {
title: "{Name}",
content: "I am located at <b>{Location}</b>."
};

var geomSer = new GeometryService({url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'});
var params = new ProjectParameters({
geometries: [point],
outSpatialReference: new SpatialReference({wkid:102100})
});

geomSer.project(params).then(function(geom){
var pointGraphic = new Graphic({
geometry: point,
symbol: simpleMarkerSymbol,
attributes: attributes,
popupTemplate: popupTemplate
});

graphicsLayer.add(pointGraphic);
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>

View solution in original post

JasonWood
New Contributor II

This is a big help, thank you!

I'm now trying to specify my point as the map center.

This is what I tried but I ended up in the ocean.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<title>ArcGIS JavaScript Tutorials: Create a Starter App</title>
<style>
html, body, #viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
</style>

<link rel="stylesheet" href="https://js.arcgis.com/4.15/esri/themes/light/main.css">
<script src="https://js.arcgis.com/4.15/"></script>

<script>
//Style point
var simpleMarkerSymbol = {
type: "simple-marker",
color: [226, 119, 40], // orange
outline: {
color: [255, 255, 255], // white
width: 1
}
};
// Create attributes
var attributes = {
Name: "Area 51", // The name of the
Inspector: "Bob",
};
// Create popup template
var popupTemplate = {
title: "{Name}",
content: "Inspector Name <b>{Inspector}</b>."
};

require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/layers/GraphicsLayer",
"esri/geometry/Point",
"esri/tasks/GeometryService",
"esri/tasks/support/ProjectParameters",
"esri/geometry/SpatialReference"
], function(Map, MapView, Graphic, GraphicsLayer, Point, GeometryService, ProjectParameters, SpatialReference) {

var sr = new SpatialReference({
wkid: 2953
});

var map = new Map({
basemap: "topo-vector"
});

var graphicsLayer = new GraphicsLayer();
map.add(graphicsLayer);


var point = Point({
type: "point",
x: 2665374.26,
y: 7435378.29,
spatialReference: sr
});

var geomSer = new GeometryService({url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer'});
var params = new ProjectParameters({
geometries: [point],
outSpatialReference: new SpatialReference({wkid:102100})
});

geomSer.project(params).then(function(geom){
var pointGraphic = new Graphic({
geometry: point,
symbol: simpleMarkerSymbol,
attributes: attributes,
popupTemplate: popupTemplate
});

var view = new MapView({
container: "viewDiv",
map: map,
center: point,
zoom: 13
});

graphicsLayer.add(pointGraphic);
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍
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RobertScheitlin__GISP
MVP Esteemed Contributor

Jason,

   For that you need to use the results of the projection.

    geomSer.project(params).then(function(results){
var pointGraphic = new Graphic({
geometry: results[0],
symbol: simpleMarkerSymbol,
attributes: attributes,
popupTemplate: popupTemplate
});

var view = new MapView({
container: "viewDiv",
map: map,
center: results[0],
zoom: 13
});

graphicsLayer.add(pointGraphic);
});
});