topic Re: Geocode Address then Buffer in ArcGIS JavaScript Maps SDK Questions

Geocode Address then Buffer

jaykapalczynski — Fri, 01 Aug 2014 18:58:41 GMT

I am trying to Geocode an Address then Buffer that address....from there I want to use that buffered graphic for further queries...

I can get the Geocode to work but stuck on getting the Buffer code to create the buffered graphic of which I need to use its geometry to run further queries..

Am I way off here?

// GEOCODER START===========================================================================================

var x = "";

var y = "";

var geocoder = new Geocoder({

arcgisGeocoder: {

placeholder: "4010 West Broad St, RIchmond, Virginia"

autoComplete: true,

map: app.map,

}, dom.byId("search"));

geocoder.startup();

geocoder.on("select", showLocation);

geocoder.on("clear", removeSpotlight);

function showLocation(evt) {

//app.map.graphics.clear();

var point = evt.result.feature.geometry;

x = point.x

y = point.y

var symbol = new SimpleMarkerSymbol().setStyle(

SimpleMarkerSymbol.STYLE_circle).setColor(

new Color([255,0,0,0.5])

);

var graphic = new Graphic(point, symbol);

app.map.graphics.add(graphic);

// ATTAMPT TO BUFFER THE RETURNED LOCATION

//----------------------------------------------------------------------------------------

var paramsGC = new BufferParameters();

paramsGC.geometries = graphic;

paramsGC.distances = [ .5 ];

//paramsGC.bufferSpatialReference = new SpatialReference({wkid: 26917});

paramsGC.outSpatialReference = app.map.spatialReference;

paramsGC.unit = GeometryService.UNIT_STATUTE_MILE;

// geometry service that will be used to perform the buffer

var geometryServiceGC = new GeometryService("https://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");

geometryServiceGC.buffer(paramsGC);

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

app.map.graphics.clear();

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

var symbol2 = new SimpleFillSymbol(

SimpleFillSymbol.STYLE_NULL,

new SimpleLineSymbol(

SimpleLineSymbol.STYLE_SOLID,

new Color([105,105,105]),

),new Color([255,255,0,0.25])

);

var bufferGeometryGC = result.geometries[0]

var graphicGC = new Graphic(bufferGeometryGC, symbol2);

app.map.graphics.add(graphicGC);

});

//-----------------------------------------------------------------------------------------

// GEOCODER END===================================================================================================

Re: Geocode Address then Buffer

jaykapalczynski — Fri, 01 Aug 2014 19:05:45 GMT

I tried to use the variable Point as well but nothing

var point = evt.result.feature.geometry;

var paramsGC = new BufferParameters();

paramsGC.geometries = point;

paramsGC.distances = [ .5 ];

Re: Geocode Address then Buffer

jaykapalczynski — Fri, 01 Aug 2014 19:14:25 GMT

Think I got it... forgot the [ ]

paramsGC.geometries = [ point ];

Re: Geocode Address then Buffer

TimWitt2 — Fri, 01 Aug 2014 19:23:46 GMT

Jay,

put the following outside of your showLocation function:

var point;

and then remove the var in front of point inside your showLocation function, so that it looks like this:

point = evt.result.feature.geometry;

now it should be global and ready to be used in your BufferParameters.

Re: Geocode Address then Buffer

jaykapalczynski — Fri, 01 Aug 2014 20:13:47 GMT

This is the code...

Geocoder
Then Draw Buffer around Gocoded Result
Then Query 1 Features and return their respective Geometry

// GEOCODER START =================================================================

var x = "";

var y = "";

var geocoder = new Geocoder({

arcgisGeocoder: {

placeholder: "Dallas, Texas"

autoComplete: true,

map: app.map,

}, dom.byId("search"));

geocoder.startup();

geocoder.on("select", showLocation);

geocoder.on("clear", removeSpotlight);

function showLocation(evt) {

//app.map.graphics.clear();

var point = evt.result.feature.geometry;

var pointGC = evt.result.feature.geometry;

x = point.x

y = point.y

var symbol = new SimpleMarkerSymbol().setStyle(

SimpleMarkerSymbol.STYLE_circle).setColor(

new Color([255,0,0,0.5])

);

var graphic = new Graphic(point, symbol);

app.map.graphics.add(graphic);

//app.map.infoWindow.setTitle("Search Result");

//app.map.infoWindow.setContent(evt.result.name);

//app.map.infoWindow.show(evt.result.feature.geometry);

var symbol_historicArchitectureGC = new SimpleFillSymbol(

"solid",

new SimpleLineSymbol("solid", new Color([0,76,153]), 2),

new Color([0,128,255,0.5])

);

flVAFWIS_historicArchitecture.setSelectionSymbol(symbol_historicArchitectureGC);

// Add the Feature Layer To Map

app.map.addLayer(flVAFWIS_historicArchitecture);

var paramsGC = new BufferParameters();

paramsGC.geometries = [ pointGC ];

paramsGC.distances = [ .5 ];

//paramsGC.bufferSpatialReference = new SpatialReference({wkid: 26917});

paramsGC.outSpatialReference = app.map.spatialReference;

paramsGC.unit = GeometryService.UNIT_STATUTE_MILE;

// geometry service that will be used to perform the buffer

var geometryServiceGC = new GeometryService("https://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");

geometryServiceGC.buffer(paramsGC);

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

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

var symbol22 = new SimpleFillSymbol(

SimpleFillSymbol.STYLE_NULL,

new SimpleLineSymbol(

SimpleLineSymbol.STYLE_SOLID,

new Color([247,5,38]),

),new Color([255,255,0,0.25])

);

var bufferGeometryGC = result.geometries[0]

var graphicGC = new Graphic(bufferGeometryGC, symbol22);

app.map.graphics.add(graphicGC);

var query_historicArchitectureGC = new Query();

query_historicArchitectureGC.geometry = bufferGeometryGC;

// Select the Points within the Buffer and show them

flVAFWIS_historicArchitecture.selectFeatures(query_historicArchitectureGC, FeatureLayer.SELECTION_NEW, function(results){

});

} // End function showLocation(evt) {

// GEOCODER END =====================================================================