Re: HOW TO REMOVE QUERIED BUFFER GRAPHICS

bharathreddy — Tue, 17 May 2016 16:15:45 GMT

Hi tim here is the code im working with

dojo.require("dijit.layout.BorderContainer");

dojo.require("dijit.layout.ContentPane");

dojo.require("esri.map");

dojo.require("esri.tasks.geometry");

dojo.require("esri.toolbars.draw");

dojo.require("esri.tasks.query");

dojo.require("esri.layers.FeatureLayer");

dojo.require("dojox.grid.DataGrid");

dojo.require("dojo.data.ItemFileReadStore");

dojo.require("dojo/_base/array");

dojo.require("dojo/store/Memory");

dojo.require("esri.tasks.find");

var map, gsvc, tb, arrayUtils;

var grid, store, data, OnDemandGrid, Memory;

var findTask, findParams;

function initialize() {

map = new esri.Map("map", {

center: [-111.5, 39.541],

zoom: 7

});

landBaseLayer = new esri.layers.ArcGISDynamicMapServiceLayer("http://192.168.2.35/ArcGIS/rest/services/point/MapServer", { opacity: 5.55 });

map.addLayer(landBaseLayer);

dojo.connect(map, "onLoad", initToolbar);

gsvc = new esri.tasks.GeometryService("http://192.168.2.35/ArcGIS/rest/services/Geometry/GeometryServer");

esri.config.defaults.io.proxyUrl = "/proxy";

esri.config.defaults.io.alwaysUseProxy = false;

// }

function initToolbar(map) {

tb = new esri.toolbars.Draw(map);

dojo.connect(tb, "onDrawEnd", doBuffer);

}

function doBuffer(geometry) {

debugger;

if (geometry.type == "point") {

var symbol = new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_SQUARE, 10, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([255, 0, 0]), 1), new dojo.Color([0, 255, 0, 0.25]));

}

else if (geometry.type == "polyline") {

var symbol = new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASH, new dojo.Color([255, 0, 0]), 1);

}

else if (geometry.type == "polygon") {

var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_NONE, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_DASHDOT, new dojo.Color([255, 0, 0]), 2), new dojo.Color([255, 255, 0, 0.25]));

}

var featureLayer = new esri.layers.FeatureLayer("http://192.168.2.35/ArcGIS/rest/services/point/MapServer/" + ddlViewBy.value, {

mode: esri.layers.FeatureLayer.MODE_SELECTION,

outFields: ["*"]

});

map.addLayer(featureLayer);

var symbol = new esri.symbol.SimpleMarkerSymbol().setColor(new dojo.Color([255, 0, 0]));

featureLayer.setSelectionSymbol(symbol);

var graphic = new esri.Graphic(geometry, symbol);

// map.graphics.add(graphic);

//setup the buffer parameters

var params = new esri.tasks.BufferParameters();

params.distances = [dojo.byId("distance").value];

params.bufferSpatialReference = new esri.SpatialReference({ wkid: dojo.byId("bufferSpatialReference").value });

params.outSpatialReference = map.spatialReference;

params.unit = eval("esri.tasks.GeometryService." + dojo.byId("unit").value);

if (geometry.type === "polygon") {

debugger;

//if geometry is a polygon then simplify polygon. This will make the user drawn polygon topologically correct.

gsvc.simplify([geometry], function (geometries) {

params.geometries = geometries;

gsvc.buffer(params, showBuffer);

});

} else {

params.geometries = [geometry];

gsvc.buffer(params);

}

//code used to set graphics for polygon buffer//////////////////////////////////////////////

function showBuffer(bufferedGeometries) {

debugger;

var symbol = new esri.symbol.SimpleFillSymbol(

esri.symbol.SimpleFillSymbol.STYLE_SOLID,

new esri.symbol.SimpleLineSymbol(

esri.symbol.SimpleLineSymbol.STYLE_SOLID,

new dojo.Color([255, 0, 0]), 2

new dojo.Color([255, 0, 0])

);

dojo.forEach(bufferedGeometries, function (geometry) {

var graphic = new esri.Graphic(geometry, symbol);

// map.graphics.add(graphic);

});

tb.deactivate();

map.showZoomSlider();

}

///////////////////////////////////////////////////////////////////////////////////

var highlightSymbol = new esri.symbol.SimpleMarkerSymbol().setColor(new dojo.Color([255, 0, 0]));

gsvc.on("buffer-complete", function (extent) {

// console.log(extent);

var results = [];

dojo.forEach(map.graphics.graphics, function (graphic) {

});

gsvc.on("buffer-complete", function (result) {

//draw the buffer geometry on the map as a map graphic

var symbol = new esri.symbol.SimpleFillSymbol(

esri.symbol.SimpleFillSymbol.STYLE_SOLID,

new esri.symbol.SimpleLineSymbol(

esri.symbol.SimpleLineSymbol.STYLE_SOLID,

new dojo.Color([255, 0, 0, 0.65]), 2

new dojo.Color([255, 0, 0, 0.35])

);

var bufferGeometry = result.geometries[0];

// console.log(bufferGeometry);

var graphic = new esri.Graphic(bufferGeometry, symbol);

map.graphics.add(graphic);

//Select features within the buffered polygon. To do so we'll create a query to use the buffer graphic

//as the selection geometry.

var query = new esri.tasks.Query();

// console.log(query);

query.geometry = bufferGeometry;

// console.log(query);

featureLayer.selectFeatures(query, esri.layers.FeatureLayer.SELECTION_NEW, function (results, i) {

$("#getData").empty();

var c = featureLayer.getSelectedFeatures();

var raja = 0;

if (c.length > 0) {

for (n = 0; n < c.length; n++) {

var o = c.attributes,

o1 = JSON.stringify(o);

o2 = o1.replace("{", ""),

o3 = o2.replace("}", ""),

o4 = o3.split(",");

var c1 = "<table border='0' cellspacing='0' cellpadding='0'><tr>";

if (o4.length > 0) {

if (raja == 0) {

for (s = 0; s < o4.length; s++) {

o5 = o4~~.split(":");~~

o6 = o5[0].replace('"', '');

o6 = o6.replace('"', '');

o7 = o5[1];

c1 += "<td style='border: solid 1px; background-color: #ccc;height:50px;'>" + o6 + "</td>";

}

raja = 1;

}

c1 += "</tr><tr>";

for (s = 0; s < o4.length; s++) {

o5 = o4~~.split(":");~~

o7 = o5[1];

c1 += "<td style='border: solid 1px;min-width: 250px;'><p>" + o7 + "</p></td>";

}

c1 += "</tr></table>"

$("#getData").append(c1);

}

var totalPopulation = sumPopulation(results);

var r = "";

r = "<b>The total Census Block population within the buffer is <i>" + totalPopulation + "</i>.</b>";

dojo.byId('messages').innerHTML = r;

});

}

function errorMessage(error) {

debugger;

console.log(error);

}

function sumPopulation(features) {

var popTotal = 0;

for (var x = 0; x < features.length; x++) {

popTotal = popTotal + features.attributes["OBJECTID"];

}

return popTotal;

}

dojo.ready(initialize);

topic Re: HOW TO REMOVE QUERIED BUFFER GRAPHICS in ArcGIS JavaScript Maps SDK Questions

HOW TO REMOVE QUERIED BUFFER GRAPHICS

Re: HOW TO REMOVE QUERIED BUFFER GRAPHICS

Re: HOW TO REMOVE QUERIED BUFFER GRAPHICS

Re: HOW TO REMOVE QUERIED BUFFER GRAPHICS