Latest Contributions by JohnGravois

very cool! ... View more

if you're asking about individual transparent tiles, check out the article below. How To: Configure the cache folder to display a 'Data not available' tile for empty map cache areas or missing tiles if you're asking whether anyone has created a real map service with cached tiles for the whole world that are all entirely transparent, i kinda doubt it. ... View more

the first and easiest option for displaying ArcGIS Online content in a Leaflet application that is not shared publicly is to embed credentials directly in your javascript and fetch a token automatically.  this is an EXTREMELY bad idea because you are exposing sensitive credentials in the code that is downloaded to each and every browser that ever opens your website. L.esri.post('https://www.arcgis.com/sharing/rest/generateToken', {   username: 'johndoe',   password: 'password123',   f: 'json',   expiration: 60,   client: 'referer',   referer: window.location.origin }, callback); complete sample: http://esri.github.io/esri-leaflet/examples/arcgis-server-auth.html a second, more difficult, and more production appropriate option is to utilize a server side proxy to hide the username and password in code that is NOT accessible to your end users so that the proxy can broker requests to secure resources and append a token on its own. L.esri.featureLayer({   url: './proxy.ashx?http://services.arcgis.com/uasgdsgd/arcgis/rest/services/SelectivelyShared/FeatureServer/0' }).addTo(map); Open Source proxies in ASP.NET, PHP and Java that we host on GitHub https://github.com/Esri/resource-proxy/ Some conceptual information from the ArcGIS API for JavaScript 3.x documentation https://developers.arcgis.com/javascript/3/jshelp/ags_proxy.html no matter what you do, you'll need to make sure you are honoring your license agreement and making sure the private content is only accessed by the number of ArcGIS Online named users you're paying for. ... View more

check out my latest reply to the esri-leaflet bug report above.  i have outlined an approach which will resolve the problem in your app. ... View more

the short answer is 'yes'.  more info here​. ... View more

honestly, im still trying to wrap my head around your question to determine the best course of action. i'm 99% certain that its normal that only non CORS requests will attempt to wrap the response in a JS callback to get around cross-origin security restrictions. but i'll have to dig in deeper in order to determine why you're not able to get access to the results of the second GP task. are the services that you're making calls to public?  either way, can you provide a simplified repro case? ... View more

i replied to your question on gis.stackexchange. Handling Errors with Esri Leaflet Dynamic Map Layers - Geographic Information Systems Stack Exchange ... View more

hi jim, sorry it took me so long to see this post. its definitely expected behavior that Esri Leaflet queries the current map extent for a subset of the features stored in your actual service, but i'm surprised to hear that you're seeing an inconsistent count for a single view. can you share a url to your service so that i can take a look? ... View more

i answered this question on gis.se. leaflet - Querying feature info for L.esri.dynamicMapLayer "bbox must be specified" - Geographic Information Systems Sta… if you still have questions after reviewing my response, i'd be happy to review a jsbin. ... View more