Site Archive

Filtering Arrays in MapLibre

Techniques for Substring Matching in MapLibre GL JS and Mapbox GL JS

ShpShifter

Preview, Convert, and Filter SHP, GPKG, GeoJSON & GeoParquet in the Browser

Mapping Disasters

Find Open Satellite Imagery from Maxar, Capella, Umbra, and Wyvern

Palisades Fire Before and After

A Sample of Available Satellite Data for Post-Disaster Visual Assessment

Deck GL and 3D Tiles

Generate Colorized 3D Tiles from LiDAR and Ortho Imagery

Finding Perpendicular lines with TurfJS

Bearing, LineIntersect & Destination

MapCompare

Rendering Comparisons of Vector Tiles and COGs in Web Mapping Libraries

GeoJSON Network Trace Tool

Trace a GeoJSON Linear Network in the Browser

H3 Grids Explorer

A Web Tool for Exoploring H3 & Geohash Grids

Potocki Vodka Store Finder

A Responsive Map-Focused Store Finder

Serverless Web Maps

Using SQLite in the Browser and Service Workers to Power Web Maps from Object Storage

City of Lancaster Public Transit

A NodeJS GTFS Feed & Interactive Map Generator

Peaks 3D Visualization

An Exporation of the Highest Mountain Peaks in the US

Export GeoJSON from PostgreSQL using Beekeeper Studio

Query > Download > Copy > Paste!

FOSS4G Image Processing

Creating Cloud Optimized GeoTIFFs and Raster Tiles using GDAL and QGIS

Generating Cloud Optimized GeoTIFFs and Raster Tiles with GDAL

TL;DR gdalbuildvrt, gdal_translate, gdal_warp and gdaladdo

Wedding Website

A Single-Page Wedding Wedsite with an Interactive Map

Pandemix Data Visualization

What if all US COVID Deaths occurred in one geographic area?

Tilequery

Query Remote Vector Tiles in Node JS and the Browser

From the Ashes of Shapefiles

A Presentation for the 2020 Virtual Ohio GIS Conference

GIS and Remote Work

An Exploration of a GIS Remote Work Toolkit

Exporting AGOL Feature Services to GeoJSON

Using NodeJS and Batches to Transform an ArcGIS Online Feature Service to GeoJSON

Ohio COVID-19 Dashboard

A Simple, Client Side Tracking Dashboard for COVID-19 in Ohio

RTK to WGS84

Transforming Coordinates with JavaScript using proj4.js

Highlighting Features in Mapbox GL JS

A Comparison of Filter and Feature-State

Network Tracing with Turf JS

A Client Side Solution for Simple Upstream and Downstream Linear Network Analysis

Progressive Web Apps

Using PWA Components for Web Maps

Open Parcel Viewer

A Client-Side Parcel Viewer built with Leaflet

Leaflet Store Locator

A Leaflet Version of the Original Mapbox JS Store Locator Example

Intro to Turf JS

Geospatial Analysis for the Browser, Desktop & Server

Mapping with Vector Tiles

Query Features Outside the Viewport

GPX Visualize

A Visualization for GPS Tracks

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

Web Maps from Scratch

An Introduction to Leaflet, GitHub & Jekyll

What is a Map?

Marshall Univerity 2016 GIS Day Keynote

Beyond the Desktop

Open Source Experiments in Web Mapping

Jekyll, Leaflet and TurfJS

Open Source Tools for Web Mapping

Leaflet & GeoJson Tiles

A County Parcel App: No GIS Server? No Problem!

Shagbark Product Locator Map

A Locator Map with Search and Nearest Store Finder

CartoDB Visualizations

One Data Set Four Ways

A Modern Leaflet Toolbar

Horizontal Toolbars in Leaflet

Conkle's Hollow Fall Hike

Mapping GPS Tracks with Leaflet

Intro to Leaflet

A Presentation for the 2015 Ohio GIS Conference

Leaflet Photo Map

A Trip Out West circa 1985

Hosting a GeoJson on GitHub