Site Archive

Serverless Web Maps

Using SQLite in the Browser and Service Workers to Power Web Maps from Object Storage
Posted January 17, 2023

City of Lancaster Public Transit

A NodeJS GTFS Feed & Interactive Map Generator
Posted February 9, 2022

Peaks 3D Visualization

An Exporation of the Highest Mountain Peaks in the US
Posted February 8, 2022

Export GeoJSON from PostgreSQL using Beekeeper Studio

Query > Download > Copy > Paste!
Posted January 29, 2022

FOSS4G Image Processing

Creating Cloud Optimized GeoTIFFs and Raster Tiles using GDAL and QGIS
Posted September 16, 2021

Generating Cloud Optimized GeoTIFFs and Raster Tiles with GDAL

TLDR: gdalbuildvrt, gdal_translate, gdal_warp and gdaladdo
Posted September 2, 2021 | Updated March 21, 2022

Wedding Website

A Single-Page Wedding Wedsite with an Interactive Map
Posted July 1, 2021

Pandemix Data Visualization

What if all US COVID Deaths occurred in one geographic area?
Posted January 28, 2021

From the Ashes of Shapefiles

A Presentation for the 2020 Virtual Ohio GIS Conference
Posted September 21, 2020

GIS and Remote Work

An Exploration of a GIS Remote Work Toolkit
Posted September 20, 2020

Exporting AGOL Feature Services to GeoJSON

Using NodeJS and Batches to Transform an ArcGIS Online Feature Service to GeoJSON
Posted April 27, 2020

Ohio COVID-19 Dashboard

A Simple, Client Side Tracking Dashboard for COVID-19 in Ohio
Posted April 1, 2020 | Updated September 12, 2020

RTK to WGS84

Transforming Coordinates with JavaScript using proj4.js
Posted November 28, 2019

Highlighting Features in Mapbox GL JS

A Comparison of Filter and Feature-State
Posted November 17, 2019

Network Tracing with Turf JS

A Client Side Solution for Simple Upstream and Downstream Linear Network Analysis
Posted July 12, 2019

Progressive Web Apps

Using PWA Components for Web Maps
Posted May 10, 2019

Open Parcel Viewer

A Client-Side Parcel Viewer built with Leaflet
Posted April 5, 2019

Leaflet Store Locator

A Leaflet Version of the Original Mapbox JS Store Locator Example
Posted April 5, 2019

Intro to Turf JS

Geospatial Analysis for the Browser, Desktop & Server
Posted September 9, 2018

Mapping with Vector Tiles

Query Features Outside the Viewport
Posted February 12, 2018 | Updated April 11, 2019

GPX Visualize

A Visualization for GPS Tracks
Posted January 1, 2018

Data-Driven Styling, 3D Polygons & Vector Tiles with Mapbox GL JS

Posted September 14, 2017

Web Maps from Scratch

An Introduction to Leaflet, GitHub & Jekyll
Posted May 16, 2017

What is a Map?

Marshall Univerity 2016 GIS Day Keynote
Posted November 16, 2016

Beyond the Desktop

Open Source Experiments in Web Mapping
Posted September 30, 2016

Jekyll, Leaflet and TurfJS

Open Source Tools for Web Mapping
Posted August 13, 2016

Leaflet & GeoJson Tiles

A County Parcel App: No GIS Server? No Problem!
Posted January 24, 2016

Shagbark Product Locator Map

A Locator Map with Search and Nearest Store Finder
Posted January 1, 2016

CartoDB Visualizations

One Data Set Four Ways
Posted December 18, 2015

A Modern Leaflet Toolbar

Horizontal Toolbars in Leaflet
Posted December 3, 2015

Conkle's Hollow Fall Hike

Mapping GPS Tracks with Leaflet
Posted October 12, 2015 | Updated April 9, 2019

Intro to Leaflet

A Presentation for the 2015 Ohio GIS Conference
Posted September 20, 2015

Leaflet Photo Map

A Trip Out West circa 1985
Posted July 13, 2015 | Updated October 27, 2018

Google MyMaps, Leaflet and ArcGIS Online

Posted November 19, 2014

Hosting a GeoJson on GitHub

Posted November 19, 2014

Google Drive Fusion Tables

Posted June 12, 2014 | Updated September 12, 2020

Raster Catalogs

Posted June 6, 2014

Desktop to the Cloud: GIS Cloud and Rasters

Posted January 31, 2014

Animating Urban Growth via the ArcMap Time Slider

One Hundred Years of Urban Growth in Ten Seconds
Posted January 30, 2014

Use Only Selected Features in Model Builder

Posted January 26, 2014