Reflections on Building Web Maps With Esri JS API From a Leaflet.js Fanboy

When I was in graduate school, I gave myself the goal of one day creating interactive web maps. This was in 2010. About five years later I was ready to learn a platform. Still new to JavaScript, I decided to give the Esri JS API a try. I think I got as far as creating …

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How to Access The Web Map in StoryMapsJS

I wanted to share how you can configure the underlying web map when working with the StoryMapsJS platform. I didn't find any documentation on how to do this. I only figured this out because I spent some time examining the source code.  17,000 lines into the storymap.js file was my access point into the web …

Building A Leaflet.js Map App With A jQuery UI Date Picker

From 2010 to 2018, Cumberland County was the fastest growing county in the state of Pennsylvania. For a more detailed look, you can check out the Pennsylvania State Data Center's report (pdf). With that growth, comes many subdivision and land development plans that need to be reviewed by the County's Planning Department. They review these …

Are You Thinking About Your Map Users?

Over the past few years, I've been working on a side project to update the hiking trails map for a small camp.  Though the project has taken longer than I anticipated, it has been very rewarding.  This past week, I think we finally finished the map.  And it was during this last revision process that …

Building the Find Zoning District By Parcel App

Our IT department is developing an online plan submission website for the County's Planning office.  In talking with the developers, the topic of finding the zoning district for a tax parcel (or piece of real estate) came up.  Our GIS department publishes services for both tax parcels and zoning districts.  I've also been wanting to …

Esri Map Service Loading & Error Events in Leaflet.js

Over the summer, we were having a recurring issue where our map services on ArcGIS Server were down.  It seemed to happen at random times.  I even received an e-mail while at a picnic about a service being down.  While this was annoying, more concerning was that my web maps built using Leaflet.js and consuming …

Testing Nominatim Geocoder with Leaflet.js

I recently wrote a post about the Esri Geocoding plugin for the Leaflet.js web mapping library.  In my spare time, I have been working on developing a version of an existing web map that does not use any  Esri-Leaflet plugins.  One of these features of the map is geocoding or searching by street address or …