jgravois’s gists

jgravois / gist:6090713

Created July 26, 2013 17:36

reprojected dynamic map service layer.

	<!DOCTYPE html>
	<html>
	<head>
	<title>Dynamic Map Services</title>
	<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
	<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.3/leaflet.css" />
	<link rel="stylesheet" href="demo.css" />
	<!--[if lte IE 8]><link rel="stylesheet" href="leaflet/leaflet.ie.css" /><![endif]-->
	<script src="http://cdn.leafletjs.com/leaflet-0.6.3/leaflet.js"></script>
	<script src="http://gravois/leaflet/esri-leaflet.min.js"></script>

jgravois / gist:6802432

Last active December 24, 2015 13:09

anatomy of AMD module loading

	require([
	"esri/map", "esri/InfoTemplate", "esri/layers/FeatureLayer",
	"dojo/parser", "dojo/domReady!"
	], function( //Beginning of anonymous callback which fires when modules have been loaded.
	Map, InfoTemplate, FeatureLayer,
	parser //Variable names to refer to loaded modules
	) {
	parser.parse(); //first line of actual callback code
	map = new Map("mapDiv", {
	basemap: "national-geographic",

jgravois / gist:6802514

Last active December 24, 2015 13:09

load comparison

	//legacy
	dojo.require(“esri.layers.FeatureLayer”);

	var featureLayer = new esri.layers.FeatureLayer("url");

	//AMD
	require([
	"esri/map", … "esri/layers/FeatureLayer"
	], function(
	Map, …, FeatureLayer,

jgravois / gist:6802612

Last active December 24, 2015 13:09

dojo vs. dom

	dojo.byId("messages").innerHTML = "howdy"; //legacy

	//becomes

	dom.byId("messages").innerHTML = "why, hello there"; //AMD

jgravois / gist:7685198

Created November 28, 2013 00:04

loop through response fields and find 'esriFieldTypeOID' instead of pulling information from response.objectIdFieldName (which is only present in a response from FeatureServer layer.

	if(response.features.length && !response.error){
	//loop through fields returned by service
	for (var j = response.fields.length - 1; j >= 0, j--) {
	//find field with type 'esriFieldTypeOID' and use its name as an attribute when converting to GeoJSON
	if(response.fields[j].type == "esriFieldTypeOID")
	var idKey = response.fields[j].name
	}
	for (var i = response.features.length - 1; i >= 0; i--) {
	var feature = response.features[i];
	var id = feature.attributes[idKey];

jgravois / gist:8404339

Last active January 13, 2016 18:59

this is a gist to remind john and matt how to query for the maximum value in a field manually (since the JS api doesnt have any tools to limit query results)

	use outStatistics
	http://services.arcgis.com/OfH668nDRN7tbJh0/arcgis/rest/services/My_Walks/FeatureServer/0/query?where=1%3D1&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&geohash=&inSR=&spatialRel=esriSpatialRelIntersects&distance=&units=esriSRUnit_Meter&outFields=&returnGeometry=false&maxAllowableOffset=&geometryPrecision=&outSR=&returnIdsOnly=false&returnCountOnly=false&returnExtentOnly=false&returnDistinctValues=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=%5B%7B%0D%0A++++%22statisticType%22%3A+%22max%22%2C%0D%0A++++%22onStatisticField%22%3A+%22WHEN%22%0D%0A%7D%5D&resultOffset=&resultRecordCount=&returnZ=false&returnM=false&quantizationParameters=&f=pjson&token=


	// not the old hack you used with driskull

	FIELD=(SELECT MAX(FIELD) FROM TABLE)

	http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3/query?where=POP2007=(SELECT MAX(POP2007) FROM states)&text=&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIn

jgravois / solarTerminator.js

Created April 25, 2014 23:01

solarTerminator.js

	var sun = new SolarTerminatorLayer({
	map: map // (required) map object. default: null.
	}, "SunButton"); //div for the widget
	sun.startup();

jgravois / amd-loader-options.html

Last active August 29, 2015 14:03

a few different examples of providing dojo AMD loader configuration options

	//sometimes we see..

	<script>var dojoConfig = { async: true };</script>
	<script src="http://js.arcgis.com/3.10/"></script>

	//or maybe..

	<script data-dojo-config="async:true" src="http://js.arcgis.com/3.10/">
	</script>

jgravois / basic-script-tag.html

Created July 11, 2014 21:46

jgravois / lots-of-options.html

Created July 11, 2014 22:19

	<script>
	var dojoConfig = {
	async:true,
	cacheBust:new Date(),
	waitSeconds:5,
	isDebug:true,
	useDeferredInstrumentation:true
	};
	</script>

john gravois jgravois