Thoughts on code, digital cartography, and technology.
Using GitHub Issues as a Simple Static CMS
· 5 min read
Why use a complex CMS when you can use GitHub Issues as a lightweight blogging engine!
Journal | Read More →A Reflection on FOSS4G North America 2025
· 3 min read
A six-hour drive each way through the hills of West Virginia to our nation’s capital might not be on everyone's to do list, but for my visit to FOSS4GNA it was definitely worth it. The chance to meet and mingle with people who generously share their knowledge of coding, data, and theory in a niche field is something that's difficult to replicate via video meetups, forums or social media.
Journal | Read More →Filtering Arrays in MapLibre
· 3 min read
Techniques for Substring Matching in MapLibre GL JS and Mapbox GL JS
Tech Blog | Read More →
Get Audio Info using ffmpeg
ffprobe \
-v error \
-select_streams a:0 \
-show_entries stream \
-of default=noprint_wrappers=1 \
"input.m4a" | sed 's/=/:/'
Batch Convert Audio with ffmpeg
for f in *.flac; do ffmpeg -v warning -i "$f" -map_metadata 0 -b:a 192k "${f%.flac}.mp3"; done
Update for May 2025
· 1 min read
A look back on what I've been up to over the past four months.
Updates | Update →Update for January 2025
· 1 min read
A look back on what I've been up to since my last update.
Updates | Update →ShpShifter
· 3 min read
Preview, Convert, and Filter SHP, GPKG, GeoJSON & GeoParquet in the Browser
Tech Blog | Read More →
Mapping Disasters
· 5 min read
Find Open Satellite Imagery from Maxar, Capella, Umbra, and Wyvern
Tech Blog | Read More →
Palisades Fire Before and After
· 5 min read
A Sample of Available Satellite Data for Post-Disaster Visual Assessment
Tech Blog | Read More →
Disposing an OpenLayers Map
const layers = map.getLayers().getArray();
layers.forEach((layer) => {
const source = layer.getSource();
if (source && source.dispose) {
source.clear();
source.dispose();
}
if (layer.disposeInternal) {
layer.disposeInternal();
} else if (layer.dispose) {
layer.dispose();
}
map.removeLayer(layer);
});
const olCanvas = map.getViewport().querySelector("canvas");
if (olCanvas) {
const gl = olCanvas.getContext("webgl") || olCanvas.getContext("webgl2");
if (gl) {
const loseContext = gl.getExtension("WEBGL_lose_context");
if (loseContext) {
loseContext.loseContext();
}
}
}
map.getInteractions().clear();
map.getOverlays().clear();
map.dispose();
map.setTarget(null);
Refactor Web Journal
· 2 min read
I originally created this site to be a simple web 2.0 blog site with text entries for thoughts that did not fit into my work-related geospatial blog. However, as I found myself creating more bespoke sites, both for a specific hobby and also as an outlet for my web development curiosity, I realized I needed a landing page for all the feeds to come together. To date I have a photo site, a geospatial blog, this site, and a music site which is still in development. So I thought why not combine all these feeds into one place, and tag on my esoteric journal entries - and what better place than my personal domain name (how lucky is that!).
Journal | Read More →Deck GL and 3D Tiles
· 3 min read
Generate Colorized 3D Tiles from LiDAR and Ortho Imagery
Tech Blog | Read More →
Introducing Ancestral Audio
· 3 min read
Using whisper and AI to transcribe audio and generate thematic clips
Journal | Read More →Finding Perpendicular lines with TurfJS
· 6 min read
Bearing, LineIntersect & Destination
Tech Blog | Read More →
MapCompare
· 2 min read
Rendering Comparisons of Vector Tiles and COGs in Web Mapping Libraries
Tech Blog | Read More →
GeoJSON Network Trace Tool
· 4 min read
Trace a GeoJSON Linear Network in the Browser
Tech Blog | Read More →
Potocki Vodka Store Finder
· 3 min read
A Responsive Map-Focused Store Finder
Tech Blog | Read More →
Serverless Web Maps
· 5 min read
Using SQLite in the Browser and Service Workers to Power Web Maps from Object Storage
Tech Blog | Read More →
City of Lancaster Public Transit
· 3 min read
A NodeJS GTFS Feed & Interactive Map Generator
Tech Blog | Read More →
Peaks 3D Visualization
· 2 min read
An Exporation of the Highest Mountain Peaks in the US
Tech Blog | Read More →
Export GeoJSON from PostgreSQL using Beekeeper Studio
· 5 min read
Query > Download > Copy > Paste!
Tech Blog | Read More →
FOSS4G Image Processing
· 5 min read
Creating Cloud Optimized GeoTIFFs and Raster Tiles using GDAL and QGIS
Tech Blog | Read More →
Generating Cloud Optimized GeoTIFFs and Raster Tiles with GDAL
· 5 min read
TL;DR gdalbuildvrt, gdal_translate, gdal_warp and gdaladdo
Tech Blog | Read More →
Wedding Website
· 5 min read
A Single-Page Wedding Wedsite with an Interactive Map
Tech Blog | Read More →
Pandemix Data Visualization
· 4 min read
What if all US COVID Deaths occurred in one geographic area?
Tech Blog | Read More →
From the Ashes of Shapefiles
· 6 min read
A Presentation for the 2020 Virtual Ohio GIS Conference
Tech Blog | Read More →
GIS and Remote Work
· 3 min read
An Exploration of a GIS Remote Work Toolkit
Tech Blog | Read More →
Exporting AGOL Feature Services to GeoJSON
· 3 min read
Using NodeJS and Batches to Transform an ArcGIS Online Feature Service to GeoJSON
Tech Blog | Read More →
Ohio COVID-19 Dashboard
· 6 min read
A Simple, Client Side Tracking Dashboard for COVID-19 in Ohio
Tech Blog | Read More →
RTK to WGS84
· 2 min read
Transforming Coordinates with JavaScript using proj4.js
Tech Blog | Read More →
Highlighting Features in Mapbox GL JS
· 6 min read
A Comparison of Filter and Feature-State
Tech Blog | Read More →
Network Tracing with Turf JS
· 6 min read
A Client Side Solution for Simple Upstream and Downstream Linear Network Analysis
Tech Blog | Read More →
Open Parcel Viewer
· 3 min read
A Client-Side Parcel Viewer built with Leaflet
Tech Blog | Read More →
Leaflet Store Locator
· 4 min read
A Leaflet Version of the Original Mapbox JS Store Locator Example
Tech Blog | Read More →
Intro to Turf JS
· 2 min read
Geospatial Analysis for the Browser, Desktop & Server
Tech Blog | Read More →
Data-Driven Styling, 3D Polygons & Vector Tiles with Mapbox GL JS
· 4 min read
Web Maps from Scratch
· 6 min read
An Introduction to Leaflet, GitHub & Jekyll
Tech Blog | Read More →
Leaflet & GeoJson Tiles
· 5 min read
A County Parcel App: No GIS Server? No Problem!
Tech Blog | Read More →
Shagbark Product Locator Map
· 3 min read
A Locator Map with Search and Nearest Store Finder
Tech Blog | Read More →
Intro to Leaflet
· 5 min read
A Presentation for the 2015 Ohio GIS Conference
Tech Blog | Read More →
Hosting a GeoJson on GitHub
· 6 min read