How to create a Buffer on a button click with a specific radius and to highlight the features in that specified radius?
983
3
09-28-2020 11:01 PM
by
This is my code please do help me to create a buffer on click on map and to highlight the features across that distance(eg:5km).
var map, toolbar;
var identifyTask, identifyParams;
require([
"esri/map",
"esri/layers/ArcGISDynamicMapServiceLayer",
"esri/layers/GraphicsLayer",
"esri/layers/FeatureLayer",
"esri/dijit/FeatureTable",
"esri/tasks/query",
"esri/symbols/PictureMarkerSymbol",
"esri/tasks/QueryTask",
"esri/dijit/Legend",
"esri/dijit/LayerList",
"dojo/_base/array",
"esri/toolbars/draw",
"esri/graphic",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/Color",
"esri/toolbars/edit",
"esri/tasks/IdentifyTask",
"esri/tasks/IdentifyParameters",
"esri/dijit/Popup",
"esri/InfoTemplate",
"dojo/dom-construct",
"dojo/_base/event",
"dojo/parser",
"dijit/registry",
"dojo/on", "dojo/dom",
"dijit/layout/BorderContainer",
"dijit/layout/ContentPane",
"dijit/layout/AccordionContainer",
"dijit/WidgetSet",
"dojo/domReady!"
], function (
Map, ArcGISDynamicMapServiceLayer, GraphicsLayer,
FeatureLayer, FeatureTable, Query, PictureMarkerSymbol,
QueryTask,
Legend, LayerList, arrayUtils,
Draw, Graphic, SimpleMarkerSymbol, SimpleLineSymbol, SimpleFillSymbol, Color, Edit,
IdentifyTask, IdentifyParameters, Popup, InfoTemplate, domConstruct,
event, parser, registry,
on, dom,
) {
parser.parse();
var popup = new Popup({
fillSymbol: new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color([255, 0, 0]), 2), new Color([255, 255, 0, 0.25]))
}, domConstruct.create("div"));
map = new Map("map", {
basemap: "dark-gray",
sliderOrientation: "horizontal",
infoWindow: popup
});
// user adding mapurl
var mybutton = dom.byId("mybutton"),
textbox = dom.byId("myInput");
on(mybutton, "click", function (evt) {
var dynamicLayer = new ArcGISDynamicMapServiceLayer(textbox.value);
map.addLayers([dynamicLayer]);
});
//Adding 3 graphics layers//
var PointLayer = new GraphicsLayer();
map.addLayer(PointLayer);
var LineLayer = new GraphicsLayer();
map.addLayer(LineLayer);
var PolygonLayer = new GraphicsLayer();
map.addLayer(PolygonLayer);
map.on("layers-add-result", function (evt) {
// console.log(evt);
var layerInfo = arrayUtils.map(evt.layers, function (layer, index) {
return { layer: layer.layer, title: layer.layer.name };
});
map.setExtent(evt.layers[0].layer.initialExtent);
if (layerInfo.length > 0) {
//add the layers
var layerListWidjet = new LayerList({
map: map,
layerInfos: layerInfo
}, "layerListDom");
layerListWidjet.startup();
//add legend
var legendDijit = new Legend({
map: map,
layerInfos: layerInfo
}, "legendDiv");
legendDijit.startup();
}
});
map.on("load", createToolbar);
// loop through all dijits, connect onClick event
// listeners for buttons to activate drawing tools
registry.forEach(function (d) {
// d is a reference to a dijit
// could be a layout container or a button
if (d.declaredClass === "dijit.form.Button") {
d.on("click", activateTool);
}
});
function activateTool() {
var tool = this.label.toUpperCase().replace(/ /g, "_");
toolbar.activate(Draw[tool]);
map.hideZoomSlider();
}
function createToolbar() {
toolbar = new Draw(map);
toolbar.on("draw-end", addToMap);
createToolbars();
}
function addToMap(evt) {
toolbar.deactivate();
map.showZoomSlider();
//SimpleMarkerSymbol
var marker = new SimpleMarkerSymbol();
marker.setColor(new Color([0, 197, 255, 1]));
marker.setSize(20);
marker.setPath("M16,3.5c-4.142,0-7.5,3.358-7.5,7.5c0,4.143,7.5,18.121,7.5,18.121S23.5,15.143,23.5,11C23.5,6.858,20.143,3.5,16,3.5z M16,14.584c-1.979,0-3.584-1.604-3.584-3.584S14.021,7.416,16,7.416S19.584,9.021,19.584,11S17.979,14.584,16,14.584z");
marker.setStyle(SimpleMarkerSymbol.STYLE_PATH);
//SimpleLineSymbol
var line = new SimpleLineSymbol();
line.setColor(new Color([0, 76, 115, 1]));
//SimpleFillSymbol
var fill = new SimpleFillSymbol();
fill.setColor(new Color([76, 230, 0, 0.4]));
if (evt.geometry.type === "point" || evt.geometry.type === "multipoint") {
PointLayer.add(new Graphic(evt.geometry, marker));
} else if (evt.geometry.type === "line" || evt.geometry.type === "polyline") {
LineLayer.add(new Graphic(evt.geometry, line));
}
else {
PolygonLayer.add(new Graphic(evt.geometry, fill));
}
}
function createToolbars() {
editToolbar = new Edit(map);
//Activate the toolbar when you click on a graphic
PointLayer.on("click", editgraphics);
PolygonLayer.on("click", editgraphics);
LineLayer.on("click", editgraphics);
function editgraphics(evt) {
event.stop(evt);
activateToolbar(evt.graphic);
};
//deactivate the toolbar when you click outside a graphic
map.on("click", function (evt) {
editToolbar.deactivate();
});
}
function activateToolbar(graphic) {
var tool = 0;
tool = tool | Edit.MOVE;
tool = tool | Edit.EDIT_VERTICES;
tool = tool | Edit.SCALE;
tool = tool | Edit.ROTATE;
// enable text editing if a graphic uses a text symbol
if (graphic.symbol.declaredClass === "esri.symbol.TextSymbol") {
tool = tool | Edit.EDIT_TEXT;
}
// specify toolbar options
var options = {
allowAddVertices: true,
allowDeleteVertices: true,
uniformScaling: true
};
editToolbar.activate(tool, graphic, options);
}
///// Load Table Grid ///////
// editable FeatureLayer
var myFeatureLayer = new FeatureLayer("https://services.arcgis.com/V6ZHFr6zdgNZuVG0/ArcGIS/rest/services/Warren_College_Trees/FeatureServer/0", {
mode: FeatureLayer.MODE_ONDEMAND,
outFields: ["*"],
visible: true,
editable: true,
id: "fLayer2"
});
var fieldInfoslist = [];
myFeatureLayer.on("load", function () {
map.setExtent(myFeatureLayer.initialExtent);
for (i = 0; i < myFeatureLayer.fields.length; i++) {
//write out field info
// console.log(dojoJson.toJson(myFeatureLayer.fields));
var fields = {
name: myFeatureLayer.fields[i].name,
alias: myFeatureLayer.fields[i].alias,
type: myFeatureLayer.fields[i].type
}
fieldInfoslist.push(fields);
}
});
// console.log(fieldInfoslist);
// set a selection symbol for the featurelayer
var selectionSymbol = new PictureMarkerSymbol();
selectionSymbol.setWidth(30);
selectionSymbol.setHeight(30);
selectionSymbol.setUrl("http://www.clker.com/cliparts/e/W/i/N/R/X/localize-me-red-marker-md.png");
myFeatureLayer.setSelectionSymbol(selectionSymbol);
// listen to featurelayer click event to handle selection
// from layer to the table.
// when user clicks on a feature on the map, the corresponding
// record will be selected in the table.
myFeatureLayer.on("click", function (evt) {
var idProperty = myFeatureLayer.objectIdField,
feature,
featureId,
query;
if (evt.graphic && evt.graphic.attributes && evt.graphic.attributes[idProperty]) {
feature = evt.graphic,
featureId = feature.attributes[idProperty];
query = new Query();
query.returnGeometry = false;
query.objectIds = [featureId];
query.where = "1=1";
myFeatureLayer.selectFeatures(query, FeatureLayer.SELECTION_NEW);
}
});
// Redlands police vehicle locations layer
// this layer is an editable layer
map.addLayer(myFeatureLayer);
//create new FeatureTable and set its properties
var gridbutton = dom.byId("grid")
on(gridbutton, "click", function (evt) {
var myFeatureTable = new FeatureTable({
featureLayer: myFeatureLayer,
map: map,
editable: true,
syncSelection: true,
dateOptions: {
datePattern: 'M/d/y',
timeEnabled: true,
timePattern: 'H:mm',
},
// use fieldInfos object to change field's label (column header),
// change the editability of the field, and to format how field values are displayed
// you will not be able to edit callnumber field in this example.
fieldInfos: [],
}, 'myTableNode');
// console.log(myFeatureLayer);
myFeatureTable.startup();
});
// function loadQueryTask() {
var queryTask = new QueryTask("https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/1");
var query = new Query();
query.returnGeometry = true;
query.outFields = ["*"];
on(dom.byId("execute"), "click", execute);
function execute() {
query.outSpatialReference = map.spatialReference;
query.text = dom.byId("stateName").value;
queryTask.execute(query, showResults);
}
function showResults(results) {
var resultItems = [];
var resultCount = results.features.length;
for (var i = 0; i < resultCount; i++) {
var feature = results.features[i];
var featureAttributes = feature.attributes;
for (var attr in featureAttributes) {
resultItems.push("<b>" + attr + ":</b> " + featureAttributes[attr] + "<br>");
}
var simpleFillSymbol = new SimpleFillSymbol().setColor(new Color([50, 205, 50, 0.25]));
var polygonGraphic = new Graphic(feature.geometry, simpleFillSymbol);
resultItems.push("<br>"); debugger
map.graphics.add(polygonGraphic);
// map.centerAndZoom(feature, 12);
}
dom.byId("info").innerHTML = resultItems.join("");
}
//////////////////// Identify Task ///////////////
var identifyButton = dom.byId("identify")
on(identifyButton, "click", function (evt) {
identifyClickHandler = on(map, 'click', executeIdentifyTask);
identifyTask = new IdentifyTask(textbox.value);
identifyParams = new IdentifyParameters();
identifyParams.tolerance = 3;
identifyParams.returnGeometry = true;
identifyParams.layerIds = [0, 2];
identifyParams.layerOption = IdentifyParameters.LAYER_OPTION_ALL;
identifyParams.width = map.width;
identifyParams.height = map.height;
})
function executeIdentifyTask(event) {
identifyParams.geometry = event.mapPoint;
identifyParams.mapExtent = map.extent;
var deferred = identifyTask
.execute(identifyParams)
.addCallback(function (response) {
return arrayUtils.map(response, function (result) {
var feature = result.feature;
var layerName = result.layerName;
feature.attributes.layerName = layerName;
// console.log(feature.attributes);
var Templates = new InfoTemplate("");
feature.setInfoTemplate(Templates);
return feature;
});
});
map.infoWindow.setFeatures([deferred]);
map.infoWindow.show(event.mapPoint);
identifyClickHandler.remove();
}
});
