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- About ChristopherJohnson1
ChristopherJohn
Frequent Contributor
since
07-04-2014
11-11-2020
90
Posts created
18
Kudos given
3
Solutions
7
Kudos received
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My Ideas
(0 Idea Submissions)Latest Contributions by ChristopherJohnson1
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Robert, thanks for taking the time to give back to the community! Your responses are always RIGHT on!!!
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05-12-2017
11:54 AM
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OK...thanks, Michael. I will give that a try too. - Chris
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03-06-2017
08:06 AM
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Thanks, guys. I appreciate the feedback. We actually do have the map document set-up so that layers only appear at certain scales. The rendering in the browser is based on user selections on the screen. So, different columns of the map service display depending on user selections and the renderer is based on the rendering algorithm/number of breaks a user selects. Right now, we are investigating all possibilities...network issues, server configuration, etc. Caching was just one option that seemed like a low-hanging fruit. Thanks again. - Chris
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03-06-2017
07:57 AM
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Thanks for the response, Michael. We are using 10.4.1., and we are currently using dynamic map services. We are seeing some slow rendering, however, so I was mulling using cached services, since the data itself does not change very often. Thanks...Chris
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03-06-2017
07:07 AM
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I am trying to determine if it makes sense to publish map service with caching enabled. The data itself in the map service does not change very often, as it is based on a file geodatabase, which will be changed maybe once or twice a year. However, the rendering of the data in that map service changes, based on the user's selections in a JavaScript application. The map service has a few layers, which are scale-dependent, and the renders data for Cities as points, as well as, data for Cities and Census Tracts as polygons. I have published a test map service using caching, but I am not seeing any noticeable differences. Are there any performance metrics at which I should be looking/on which I should be focused? Thanks...Chris
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03-06-2017
06:15 AM
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Ha, ha! Thanks. I guess I should have looked at the date first. Thanks anyway. - Chris
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03-02-2017
07:20 AM
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Did you get a response to the long query string question? Thanks...Chris
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03-02-2017
06:21 AM
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Hi, Robert. This was resolved with the resolution to the other issue -- https://community.esri.com/thread/186877-feature-table-refresh . Thanks!
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12-07-2016
02:26 PM
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Thanks again, Robert! It looks like your solution will work for us. We are integrating this into a custom BI tool, so the code was modified a bit. Thanks again! - Chris
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12-07-2016
11:24 AM
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I think that I tried that, as well. Your response to my other question may resolve this issue. I will let you know when I try that one. Thanks...Chris
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12-07-2016
04:40 AM
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Hi, Robert. Yes, but map.setExtent() is not invoking the behavior that I want (updating the feature table); panning is. Thanks...Chris
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12-06-2016
09:39 AM
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I thought that I had seen some posts on here that simulate a pan on a map...but not actually panning on the map. Can someone point me in the direction of some code to accomplish that task? Setting the panDuration and then calling panUp and then panDown immediately? Thanks...Chris
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12-06-2016
07:07 AM
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Hi, Robert. Thank you again VERY much for taking the time to investigate this issue. I am still seeing a similar issue, as before. For example, when zoomed into the Counties, the table header shows the correct number of values. However, the table grid shows values not currently shown on the map. As a matter of fact, even when viewing Cities and when zoomed into the MidWest, Hawaii is displayed in the table. And again, when zooming back out from Cities, the table header count does not update correctly. Is this normal behavior? Thanks...Chris
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12-05-2016
11:59 PM
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I am using the JavaScript API version 3.16 and I am developing an application that loads three scale dependent feature layers on a map. The layers are being added to the map after the data in a column in the layer is classified via the generateRendererTask. There are feature tables associated with each layer and the appropriate feature table is visible when the corresponding feature layer is shown on the map. I have a couple questions... 1. Thanks to the code from Robert Scheitlin, the feature table updates on zoom in. On zoom out, it does not update accurately. If I change the spatial relationship to "CONTAINS" it does. Is it correct to change that parameter? 2. When the second feature layer displays, the header of the table is correct, but not the actual table results. What method should I use? I tried featureTable.grid.setStore, but that did not work. <!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Feature Table Example For ESRI</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.16/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.16/esri/css/esri.css">
<script src="https://js.arcgis.com/3.16/"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<style>
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#map {
width: 100%;
height: 500px;
margin: 0;
padding: 0;
}
#divGrid {
position: absolute;
left: 0px;
top: 525px;
background-color: white;
z-index: 999;
overflow: scroll;
width: 100%;
height: 400px;
margin-bottom: 20px;
}
#citypoints {
position: absolute;
background-color: white;
z-index: 999;
overflow: scroll;
width: 100%;
height: 100%;
}
#citypolys {
position: absolute;
background-color: white;
z-index: 999;
overflow: scroll;
width: 100%;
height: 100%;
}
#tractpolys {
position: absolute;
background-color: white;
z-index: 999;
overflow: scroll;
width: 100%;
height: 100%;
}
.displaynone {
display: none;
}
#divShowHideTable {
position: absolute;
top: 317px;
left: 20px;
z-index: 50;
}
#imgHiddenTable:hover {
cursor: pointer;
}
#imgShownTable:hover {
cursor: pointer;
}
/*#divGrid {
position: absolute;
top: 500px;
width: 100%;
height: 40%;
}*/
</style>
<script>
// declare variables and instantiate some
var map, grid, fl_url, symbol, polygonSymbol, highlightSymbol, pointSymbol, outlineSymbol, line, renderer, featureLayer, loading, myFeatureTable, idx, title, content, drawingOptions, placeholdertxt, whereclause, fieldsToDisplay, selectionToolbar, val, fieldsoutputted, fieldsarray, lblgridheadertxt, citypointlayer, stateoutlinelayer, cityoutlinelayer, citypolygonlayer, tractpolygonlayer, citypointrenderer, stateoutlinerender, cityoutlinerenderer, citypolygonrenderer, tractpolygonrenderer, tb, citypointFT, citypolyFT, tractpolyFT, rfrshtbls, initld;
var visiblelayers = [],
symbolArray = [],
labelArray = [],
fieldsToSearch = [];
var renderedField = 'pop2000';
var DataUnavailableTxt = "Population < 50",
oldExtent = null;
// initialize modules and classes
require([
"esri/map"
, "esri/graphic"
, "esri/dijit/Basemap"
, "esri/dijit/BasemapLayer"
, "esri/dijit/BasemapGallery"
, "esri/arcgis/utils"
, "esri/urlUtils"
, "esri/geometry/webMercatorUtils"
, "esri/dijit/Search"
, "esri/layers/FeatureLayer"
, "esri/dijit/FeatureTable"
, "esri/geometry/Extent"
, "esri/geometry/Polygon"
, "esri/symbols/SimpleFillSymbol"
, "esri/layers/ArcGISDynamicMapServiceLayer"
, "esri/layers/ImageParameters"
, "esri/InfoTemplate"
, "esri/renderers/ClassBreaksRenderer"
, "esri/tasks/GenerateRendererParameters"
, "esri/tasks/GenerateRendererTask"
, "esri/tasks/ClassBreaksDefinition"
, "esri/symbols/SimpleMarkerSymbol"
, "esri/symbols/SimpleLineSymbol"
, "esri/renderers/SimpleRenderer"
, "esri/tasks/AlgorithmicColorRamp"
, "esri/lang"
, "dojo/_base/lang"
, "esri/toolbars/draw"
, "esri/geometry/Point"
, "esri/geometry/geometryEngine"
, "esri/dijit/Scalebar"
, "esri/layers/LayerDrawingOptions"
, "esri/request"
, "dojo/dom-construct"
, "esri/tasks/QueryTask"
, "esri/tasks/query"
, "esri/Color"
, "dijit/form/Slider"
, "dojo/dom-style"
, "dgrid/Selection"
, "dojo/ready"
, "dojo/on"
, "dojo/_base/array"
, "dojox/gfx"
, "esri/symbols/jsonUtils"
, "dojo/_base/array"
, "dojo/dom"
, "dijit/form/Button"
, "dojo/data/ItemFileReadStore"
, "dijit/registry"
, "dojo/parser"
, "dojo/_base/declare"
, "dijit/layout/BorderContainer"
, "dijit/layout/ContentPane"
, "dijit/form/TextBox"
, "dgrid/extensions/ColumnHider"
, "dojo/domReady!"
], function(
Map
, Graphic
, Basemap
, BasemapLayer
, BasemapGallery
, arcgisUtils
, urlUtils
, webMercatorUtils
, Search
, FeatureLayer
, FeatureTable
, Extent
, Polygon
, SimpleFillSymbol
, ArcGISDynamicMapServiceLayer
, ImageParameters
, InfoTemplate
, ClassBreaksRenderer
, GenerateRendererParameters
, GenerateRendererTask
, ClassBreaksDefinition
, SimpleMarkerSymbol
, SimpleLineSymbol
, SimpleRenderer
, AlgorithmicColorRamp
, esriLang
, lang
, Draw
, Point
, geometryEngine
, Scalebar
, LayerDrawingOptions
, esriRequest
, domConstruct
, QueryTask
, Query
, Color
, Slider
, domStyle
, Selection
, ready
, on
, arrayUtils
, gfx
, jsonUtils
, array
, dom
, Button
, ItemFileReadStore
, registry
, parser
, declare
, BorderContainer
, ContentPane
, TextBox
, ColumnHider
, ready
)
{
parser.parse();
var DynamicMapServiceURL = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer";
// define symbols
highlightSymbol = new SimpleFillSymbol().setStyle(SimpleFillSymbol.STYLE_SOLID).setOutline(new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([91, 91, 91]), 3)).setColor(new Color([125, 125, 125, 0.35]));
polygonSymbol = new SimpleFillSymbol().setStyle(SimpleFillSymbol.STYLE_SOLID).setOutline(new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([85, 85, 85]), 1)).setColor(new Color([153, 153, 153]));
pointSymbol = new SimpleMarkerSymbol().setStyle(SimpleMarkerSymbol.STYLE_CIRCLE).setSize(8).setOutline(new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([85, 85, 85]), 1)).setColor(new Color([153, 153, 153]));
outlineSymbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([91, 91, 91]), 1);
// intial map extent
var initialExtent = new esri.geometry.Extent({
"xmin": -19525916.67711644,
"ymin": 1491562.5722065126,
"xmax": -2404022.3412415087,
"ymax": 9318714.26860648,
"spatialReference": {
"wkid": 102100
}
});
// instantiate infoTemplate
var infotemp = new InfoTemplate();
// define the dynamic map service layer and the image parameter attribute it uses
var imageParameters = new ImageParameters();
imageParameters.format = "png";
var dynamicMapServiceLayer = new ArcGISDynamicMapServiceLayer(DynamicMapServiceURL, {
"opacity": 1.0,
"imageParameters": imageParameters
});
// add a map to the page
map = new Map("map", {
//zoom: 4,
basemap: "gray",
extent: initialExtent
//,infoTemplate: infotemp
});
// events that fire, based on actions in the UI
// the function below displays an error message and hides the div in which the map is drawn
function showErr(err)
{
'use strict';
console.log("Error Details: ", err);
}
on(dom.byId("imgShownTable"), "click", function(e)
{
// hide the table
//ShowElement(e.id, 'divGrid', '', '');
$('#divGrid').hide();
// show the hidden Legend image and hide the shown Legend image
$('#divShownTable').hide();
$('#divHiddenTable').show();
});
on(dom.byId("imgHiddenTable"), "click", function(e)
{
// show the table
//ShowElement(e.id, 'divGrid', '', '');
$('#divGrid').show();
showHideGridAndLegend();
// hide the hidden Legend image and show the shown Legend image
$('#divShownTable').show();
$('#divHiddenTable').hide();
});
// set the initial visibility of the controls in the UI
function setInitialVisibilityOfControls()
{
'use strict';
// show buttons/controls
//$('#divHiddenLegend').show();
//$('#divHiddenOtherControls').show();
$('#divHiddenTable').show();
//$('#divDraw').show();
//// hide divs that contain controls
//$('#divLegend').hide();
//$('#divOtherControls').hide();
$('#divGrid').hide();
// make the controls draggable
//$("#divLegend").draggable({ containment: "#divMap", scroll: false });
//$('#divOtherControls').draggable({ containment: "#divMap", scroll: false });
//$('#divGrid').draggable({ containment: "#divMap", scroll: false });
}
// hide the mouse-over effect (infowindow and any graphics) when the cursor moves outside of the map extent
map.on("mouse-out", function(evt)
{
var loc = evt.mapPoint;
if (!map.extent.contains(loc))
{
map.infoWindow.hide();
map.graphics.clear();
}
});
// substitute the "(" and ", " in the CI values
map.infoWindow.on("show", function()
{
map.infoWindow.setContent(map.infoWindow._contentPane.innerHTML.replace(/\(|\)/g, '').replace(/, /g, ' - '));
});
// clear any graphics on the map when the infowindow hides/goes away
map.infoWindow.on("hide", function()
{
map.graphics.clear();
});
//create new FeatureTable and set its properties
function AddGrid(lyrid, gridloc)
{
'use strict';
var existingGrid = dijit.byId(gridloc);
if (existingGrid)
{
existingGrid.destroyRecursive(true);
}
if (lyrid === 3)
{
tractpolyFT = new FeatureTable({
"featureLayer": tractpolygonlayer,
"map": map,
"showStatistics": false,
"zoomToSelection": false,
"syncSelection": true,
"outFields": ["*"]
}, gridloc);
tractpolyFT.startup();
} else
{
if (lyrid === 0)
{
citypointFT = new FeatureTable({
"featureLayer": citypointlayer,
"map": map,
"showStatistics": false,
"zoomToSelection": false,
"syncSelection": true,
"outFields": ["*"]
}, gridloc);
citypointFT.startup();
} else
{
citypolyFT = new FeatureTable({
"featureLayer": citypolygonlayer,
"map": map,
"showStatistics": false,
"zoomToSelection": false,
"syncSelection": true,
"outFields": ["*"]
}, gridloc);
citypolyFT.startup();
}
}
}
// this is a custom function used to format fields in the feature table and popup
formatVal = function(val)
{
return val.replace(/\(|\)/g, '').replace(/, /g, ' - ');
}
// the 3 functions below are formatting functions, with their origins documented above them
//http://stackoverflow.com/questions/18082/validate-decimal-numbers-in-javascript-isnumeric?page=1&tab=votes#1830844
var isNumber = function(n)
{
return !isNaN(parseFloat(n)) && isFinite(n);
};
//http://james.padolsey.com/javascript/wordwrap-for-javascript/
function wordwrap(str, width, brk, cut)
{
'use strict';
brk = brk || '\n';
width = width || 75;
cut = cut || false;
if (!str)
{
return str;
}
var regex = '.{1,' + width + '}(\\s|$)' + (cut ? '|.{' + width + '}|.+$' : '|\\S+?(\\s|$)');
//this line will cause a JSLint error: Missing 'new' prefix when invoking a constructor (this error can be ignored)
return str.match(RegExp(regex, 'g')).join(brk);
}
function formatValues(num)
{
'use strict';
return number.format(num, {
"places": 1
});
}
// this function is a modification of the one just above
function formatValues2(num)
{
'use strict';
return num = num.toFixed(1);
}
// the functions below dynamically generate a renderer and apply that
// renderer generated by the createRenderer function above to the featureLayer and adds labels.
// using individual functions, as trying to use a generic/parameterized one before did not work
function applyctyptRenderer(citypointrenderer)
{
'use strict';
citypointrenderer.defaultLabel = DataUnavailableTxt;
citypointrenderer.defaultSymbol = pointSymbol;
citypointlayer.setRenderer(citypointrenderer);
citypointlayer.renderer.setOpacityInfo(0.7);
map.addLayer(citypointlayer);
}
function applystoutRenderer(stateoutlinerenderer)
{
'use strict';
stateoutlinerenderer.defaultLabel = DataUnavailableTxt;
stateoutlinerenderer.defaultSymbol = outlineSymbol;
stateoutlinelayer.setRenderer(stateoutlinerenderer);
map.addLayer(stateoutlinelayer);
}
function applyctyoutRenderer(cityoutlinerenderer)
{
'use strict';
cityoutlinerenderer.defaultLabel = DataUnavailableTxt;
cityoutlinerenderer.defaultSymbol = outlineSymbol;
cityoutlinelayer.setRenderer(cityoutlinerenderer);
map.addLayer(cityoutlinelayer);
}
function applyctypolyRenderer(citypolygonrenderer)
{
'use strict';
citypolygonrenderer.defaultLabel = DataUnavailableTxt;
citypolygonrenderer.defaultSymbol = polygonSymbol;
citypolygonlayer.setRenderer(citypolygonrenderer);
citypolygonlayer.renderer.setOpacityInfo(0.7);
map.addLayer(citypolygonlayer);
}
function applytrtpolyRenderer(tractpolygonrenderer)
{
'use strict';
tractpolygonrenderer.defaultLabel = DataUnavailableTxt;
tractpolygonrenderer.defaultSymbol = polygonSymbol;
tractpolygonlayer.setRenderer(tractpolygonrenderer);
tractpolygonlayer.renderer.setOpacityInfo(0.7);
map.addLayer(tractpolygonlayer);
}
function createRenderer(lyr, field)
{
'use strict';
var classDef = new ClassBreaksDefinition();
classDef.classificationField = field;
classDef.classificationMethod = $('#islClassifiers').val() ? $('#islClassifiers').val() : "natural-breaks";
classDef.breakCount = $('#islClassifiersCount').val() ? $('#islClassifiersCount').val() : 7;
switch (lyr)
{
case 0:
classDef.baseSymbol = pointSymbol;
break;
case 2:
classDef.baseSymbol = polygonSymbol;
break;
case 3:
classDef.baseSymbol = polygonSymbol;
break;
default:
classDef.baseSymbol = outlineSymbol;
break;
}
var colorRamp = new AlgorithmicColorRamp();
switch ($('#islColorScheme').val())
{
case 'OriginalBlue':
// original that we use on BRFSS
colorRamp.fromColor = new Color.fromHex("#F0F9E8");
colorRamp.toColor = new Color.fromHex("#2b8cbe");
break;
case 'Prevention':
// default color scheme for prevention
colorRamp.fromColor = new Color.fromHex("#ffffcc");
colorRamp.toColor = new Color.fromHex("#0c2c84");
break;
case 'UnhealthyBehaviors':
// default color scheme for unhealthy behaviors and healthy outcomes
colorRamp.fromColor = new Color.fromHex("#ffffd4");
colorRamp.toColor = new Color.fromHex("#8c2d04");
break;
case 'HealthyOutcomes':
// default color scheme for unhealthy behaviors and healthy outcomes
colorRamp.fromColor = new Color.fromHex("#ffffd4");
colorRamp.toColor = new Color.fromHex("#8c2d04");
break;
case 'Orange':
// another option -- orange-ish
colorRamp.fromColor = new Color.fromHex("#ffffe5");
colorRamp.toColor = new Color.fromHex("#662506");
break;
default:
// another option -- blue-ish
colorRamp.fromColor = new Color.fromHex("#ffffd9");
colorRamp.toColor = new Color.fromHex("#081d58");
break;
}
colorRamp.algorithm = "hsv";
classDef.colorRamp = colorRamp;
var params = new GenerateRendererParameters();
params.classificationDefinition = classDef;
params.where = whereclause;
var generateRenderer = new GenerateRendererTask(DynamicMapServiceURL + "/" + lyr);
// apply a different renderer, based on the layer
switch (lyr)
{
case 0:
generateRenderer.execute(params, applyctyptRenderer, showErr);
break;
case 2:
generateRenderer.execute(params, applyctypolyRenderer, showErr);
break;
case 3:
generateRenderer.execute(params, applytrtpolyRenderer, showErr);
break;
default:
break;
}
}
// show the attributes in a custom way
function showCustomIW(e, lyrid)
{
'use strict';
map.graphics.clear();
var graphic = e.graphic;
setIWTitleAndContent(lyrid);
map.infoWindow.setTitle(esriLang.substitute(graphic.attributes, infotemp.title));
map.infoWindow.setContent(esriLang.substitute(graphic.attributes, infotemp.content));
lyrid === '0' || lyrid === '2' ? map.infoWindow.resize(350, 250) : map.infoWindow.resize(350, 150);
var highlightGraphic = new Graphic(graphic.geometry, lyrid === '0' ? pointSymbol : polygonSymbol);
map.graphics.add(highlightGraphic);
map.infoWindow.show(e.screenPoint, map.getInfoWindowAnchor(e.screenPoint));
}
// hide the infowindow and any graphics
function hideInfoWindow()
{
'use strict';
map.graphics.clear();
map.infoWindow.hide();
}
// set title and content of infowindow
function setIWTitleAndContent(layerid)
{
'use strict';
map.infoWindow.hide();
title = "${areaname}";
content = "${*}";
infotemp.setTitle(title);
infotemp.setContent(content);
}
function LoadCityPointLayer()
{
'use strict';
//#region CityPointLayer
// add city point layer
citypointlayer = new FeatureLayer(DynamicMapServiceURL + "/0", {
mode: FeatureLayer.MODE_ONDEMAND,
outFields: ["*"],
//infoTemplate: infotemp,
id: "City Point Layer",
minScale: 0,
maxScale: 4622324
});
createRenderer(0, renderedField);
//citypointlayer.on("click", function(evt)
//{
// showCustomIW(evt, 0);
//});
//citypointlayer.on("mouse-over", function(evt)
//{
// showCustomIW(evt, 0);
//});
//citypointlayer.on("mouse-out", hideInfoWindow);
citypointlayer.on("selection-complete", function(e)
{
var results = [];
arrayUtils.forEach(e.features, function(feature)
{
results.push(feature.attributes.OBJECTID);
});
citypointFT.selectedRowIds = results;
citypointFT._showSelectedRecords();
citypointFT._gridTitleNode.innerHTML = citypointlayer.name + ' (' + (results.length != 'undefined' ? (results.length > 1 ? results.length + ' Features)' : 1 + ' Feature)') : "");
});
citypointlayer.on("selection-clear", function(e)
{
citypointlayer.setSelectionSymbol(null);
map.setExtent(map.extent);
});
AddGrid(0, "citypoints");
// limit the feature table to the records of the feature layer in the current map extent
// sort, as well
citypointlayer.on("load", function(evt)
{
citypointFT.grid.set('sort', [{
attribute: "NAME"
}]);
var extent = citypointlayer.fullExtent;
if (webMercatorUtils.canProject(extent, map))
{
map.on("extent-change", lang.hitch(this, function(params)
{
// do not highlight the features when the map extent changes, as can be seen from below...it triggers a selection
citypointlayer.setSelectionSymbol(null);
// taken from https://community.esri.com/thread/173929
var query = new Query();
query.geometry = params.extent;
query.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;
citypointlayer.selectFeatures(query, FeatureLayer.SELECTION_NEW);
}))
}
});
//#endregion
}
function LoadCityPolygonLayer()
{
'use strict';
//#region CityPolygonLayer
// add city polygon layer
citypolygonlayer = new FeatureLayer(DynamicMapServiceURL + "/2", {
mode: FeatureLayer.MODE_ONDEMAND,
outFields: ["*"],
//infoTemplate: infotemp,
id: "City Polygon Layer",
minScale: 4622324,
maxScale: 1155581
});
createRenderer(2, renderedField);
//citypolygonlayer.on("click", function(evt)
//{
// showCustomIW(evt, 2);
//});
//citypolygonlayer.on("mouse-over", function(evt)
//{
// showCustomIW(evt, 2);
//});
//citypolygonlayer.on("mouse-out", hideInfoWindow);
citypolygonlayer.on("selection-complete", function(e)
{
var results = [];
arrayUtils.forEach(e.features, function(feature)
{
results.push(feature.attributes.OBJECTID);
});
citypolyFT.selectedRowIds = results;
citypolyFT._showSelectedRecords();
citypolyFT._gridTitleNode.innerHTML = citypolygonlayer.name + ' (' + (results.length != 'undefined' ? (results.length > 1 ? results.length + ' Features)' : 1 + ' Feature)') : "");
});
citypolygonlayer.on("selection-clear", function(e)
{
citypolygonlayer.setSelectionSymbol(null);
map.setExtent(map.extent);
});
AddGrid(2, "citypolys");
// limit the feature table to the records of the feature layer in the current map extent
// sort, as well
citypolygonlayer.on("load", function(evt)
{
citypolyFT.grid.set('sort', [{
attribute: "NAME"
}]);
var extent = citypolygonlayer.fullExtent;
if (webMercatorUtils.canProject(extent, map))
{
map.on("extent-change", lang.hitch(this, function(params)
{
// do not highlight the features when the map extent changes, as can be seen from below...it triggers a selection
citypolygonlayer.setSelectionSymbol(null);
// taken from https://community.esri.com/thread/173929
var query = new Query();
query.geometry = params.extent;
query.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;
citypolygonlayer.selectFeatures(query, FeatureLayer.SELECTION_NEW);
}))
}
});
//#endregion
}
function LoadTractPolygonLayer()
{
'use strict';
//#region TractPolygonLayer
// add census tract polygon layer
tractpolygonlayer = new FeatureLayer(DynamicMapServiceURL + "/3", {
mode: FeatureLayer.MODE_ONDEMAND,
outFields: ["*"],
//infoTemplate: infotemp,
id: "Census Tract Polygon Layer",
minScale: 1155581,
maxScale: 0
});
createRenderer(3, renderedField);
//tractpolygonlayer.on("click", function(evt)
//{
// showCustomIW(evt, 3);
//});
//tractpolygonlayer.on("mouse-over", function(evt)
//{
// showCustomIW(evt, 3);
//});
//tractpolygonlayer.on("mouse-out", hideInfoWindow);
tractpolygonlayer.on("selection-complete", function(e)
{
var results = [];
arrayUtils.forEach(e.features, function(feature)
{
results.push(feature.attributes.OBJECTID);
});
tractpolyFT.selectedRowIds = results;
tractpolyFT._showSelectedRecords();
tractpolyFT._gridTitleNode.innerHTML = tractpolygonlayer.name + ' (' + (results.length != 'undefined' ? (results.length > 1 ? results.length + ' Features)' : 1 + ' Feature)') : "");
});
tractpolygonlayer.on("selection-clear", function(e)
{
tractpolygonlayer.setSelectionSymbol(null);
map.setExtent(map.extent);
});
AddGrid(3, "tractpolys");
// limit the feature table to the records of the feature layer in the current map extent
// sort, as well
tractpolygonlayer.on("load", function(evt)
{
tractpolyFT.grid.set('sort', [{
attribute: "plc_tract2010"
}]);
var extent = tractpolygonlayer.fullExtent;
if (webMercatorUtils.canProject(extent, map))
{
map.on("extent-change", lang.hitch(this, function(params)
{
// do not highlight the features when the map extent changes, as can be seen from below...it triggers a selection
tractpolygonlayer.setSelectionSymbol(null);
// taken from https://community.esri.com/thread/173929
var query = new Query();
query.geometry = params.extent;
query.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;
tractpolygonlayer.selectFeatures(query, FeatureLayer.SELECTION_NEW);
}))
}
});
//#endregion
}
// the function below shows/hides the appropriate feature table, based on the map scale
function showHideGridAndLegend()
{
'use strict';
//console.log(map.getScale());
switch (true)
{
case (map.getScale() >= 4622324):
$('#citypoints').show();
$('#citypolys').hide();
$('#tractpolys').hide();
// the feature table is sometimes not shown expanded when the window showing it opens
// a search online led me to a post that recommended re-sizing the table, after the window has been opened
// this is an attempt that only works occasionally, right now
if (citypointFT)
{
citypointFT.grid.resize();
}
break;
case (map.getScale() < 4622324 && map.getScale() > 1155581):
$('#citypoints').hide();
$('#citypolys').show();
$('#tractpolys').hide();
// the feature table is sometimes not shown expanded when the window showing it opens
// a search online led me to a post that recommended re-sizing the table, after the window has been opened
// this is an attempt that only works occasionally, right now
if (citypolyFT)
{
citypolyFT.grid.resize();
}
break;
case (map.getScale() <= 1155581):
$('#citypoints').hide();
$('#citypolys').hide();
$('#tractpolys').show();
// the feature table is sometimes not shown expanded when the window showing it opens
// a search online led me to a post that recommended re-sizing the table, after the window has been opened
// this is an attempt that only works occasionally, right now
if (tractpolyFT)
{
tractpolyFT.grid.resize();
}
break;
default:
$('#citypoints').hide();
$('#citypolys').hide();
$('#tractpolys').hide();
break;
}
}
// the function below zooms to the map extent of the results of a query
function getMapExtentOnZoom(result)
{
'use strict';
// without the delays in calling the functions below, the functionality was not consistent.
if (result.features[0] !== 'undefined' && typeof result.features[0] !== 'undefined')
{
setTimeout(function()
{
//map.setExtent(result.features[0].geometry.getExtent().expand(1.45));
map.setExtent(result.features[0].geometry.getExtent(), true);
}, 450);
} else
{
setTimeout(function()
{
map.setExtent(initialExtent, true);
}, 450);
}
//showHideGridAndLegend();
}
// the function below queries the feature layer, based on if the where clause has a value or not
// if it does not, it uses the current map extent/geometry to limit the feature layer query
function zoomToSelection()
{
'use strict';
var loc, idx;
// set the layer to use, based on the selected input controls --
// States for City data and City polygons for Census data
if ($('#islCities').val() !== 'undefined' && typeof $('#islCities').val() !== 'undefined')
{
loc = $('#islCities').val();
idx = 3;
} else
{
loc = $('#islStates').val() === '59' ? '1=1' : $('#islStates').val();
idx = 1;
}
if (typeof (loc) !== 'undefined' && loc.length > 1)
{
// define the field to query to get the extent to show on zoom To
var qryfield = loc;
// assigning the spatial reference here, once the map is already created
var qry = new Query();
qry.outSpatialReference = map.SpatialReference;
qry.returnGeometry = true;
if (idx === 3)
{
qry.where = "STPL_FIPS = '" + qryfield + "'";
} else
{
qry.where = "STATE = '" + qryfield + "'";
}
qry.where = qry.where.replace(/'/g, "QUOTE");
var qryTask = new QueryTask(DynamicMapServiceURL + "/" + idx);
qryTask.execute(qry, getMapExtentOnZoom, showErr);
}
}
// function that calls individual functions to load the layers and tables and zoom, if necessary
function LoadLayers()
{
'use strict';
//renderedField = $('#islMeasures option:selected').val() !== '' && typeof $('#islMeasures option:selected').val() !== 'undefined' ? $('#islMeasures option:selected').val() + "_CrudePrev" : 'BINGE_CrudePrev';
//CI = $('#islMeasures option:selected').val() !== '' && typeof $('#islMeasures option:selected').val() !== 'undefined' ? $('#islMeasures option:selected').val() + "_Crude95CI" : "BINGE_Crude95CI";
renderedField = 'pop2000';
LoadCityPointLayer();
LoadCityPolygonLayer();
LoadTractPolygonLayer();
//LoadStateOutlineAndCityBoundaryLayers();
// add drawing toolbox
//addDrawingTools();
}
// remove layers from the map
function RemoveLayers()
{
'use strict';
map.removeLayer(citypointlayer);
map.removeLayer(citypolygonlayer);
map.removeLayer(tractpolygonlayer);
//map.removeLayer(dynamicMapServiceLayer);
}
// load the feature layers when the map loads
map.on("load", function()
{
// add feature layers to the map and associated behaviors of feature layers
LoadLayers();
// set initil visibility of buttons/divs/etc.
setInitialVisibilityOfControls();
});
// determine which feature table to show when a user zooms
map.on("extent-change", showHideGridAndLegend);
});
</script>
</head>
<body class="claro esri">
<div data-dojo-type="dijit/layout/BorderContainer" data-dojo-props="design:'headline'" style="width:100%; height:100%;">
<div data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center', splitter:true" style="height:50%">
<div id="map">
<div id="divShowHideTable">
<div id="divShownTable" class="displaynone">
<img alttext="Image that displays when the Feature Table is showing."
src="Shared.Images.table_selected.png"
id="imgShownTable"
tooltip="Hide Table" />
</div>
<div id="divHiddenTable" class="displaynone">
<img alttext="Image that displays when the Feature Table is hidden."
src="Shared.Images.table_default.png"
id="imgHiddenTable"
tooltip="Show Table" />
</div>
</div>
</div>
</div>
</div>
<div id="divGrid">
<div id="citypoints"></div>
<div id="citypolys"></div>
<div id="tractpolys"></div>
</div>
</body>
</html> Any help is greatly appreciated. Thanks. - Chris
... View more
12-05-2016
07:25 AM
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My kudoed posts
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| 1 | 12-05-2016 01:28 AM | |
| 1 | 02-06-2016 09:56 PM | |
| 1 | 10-31-2017 10:11 AM | |
| 1 | 09-06-2017 06:33 AM |
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