Open-source 3D maps in the browserFall, 2023
A presentation at 2023 Kentucky GIS Conference. This presentation explores the possibilities of using open-source mapping tools, specifically MapLibre GL JS, QGIS, and PMTiles, in combination with LiDAR point cloud elevation data to create dynamic and detailed 3D maps with terrain tile sets. View presentation and code.
GEO 409: Visualizing changeSpring semester, 2023
Lexington, Kentucky has two years of point cloud data; 2010 and 2019. Creating digital surface models (DSM) of both years, this map explores how to visualize the change in surface heights between the two years. Enlarge.
GEO 409: Visualizing point cloudsSpring semester, 2023
Visualizing lidar point clouds typically involves colorizing a cloud with aerial imagery taken near the same time as the lidar scan. This site explores this process and additional ways to visualize point clouds and their derivatives. Website and maps.
GEO 509: Report Fall 2022Fall semester, 2022
An analysis of flood-prone infrastructure and conditions in selected Eastern Kentucky watersheds. Website and maps.
The joy of mapping with BoydFall semester, 2022
Creating Joy Maps in 8 minutes. Repository.
Thinking of our Pauer Center for Cartography & GISSpring semester, 2022
Over the years, non-profits and local governments have requested tourism maps. Many of our undergrads are from these same areas. A goal of mine is to orient our center to support and sustain a geography internship to produce creative and useful maps for these requests. View interactive map.
Kentucky Population density, 2020 CensusFall semester, 2021
Shaded relief of Digital Surface ModelSpring semester, 2021
Lidar point clouds contain above-ground features. A DSM made with these features was shaded in Blender 3D software and converted to a raster tileset. View slippy map.
Go See TreesFall semester, 2020
Paint by Nature in Lexington (pandemic project) boydx.github.io/go-see-trees/
Town Branch CorridorSpring semester, 2021
The course of Town Branch of the Elkhorn in Lexington has guided downtown's development and the orientation of its streets. Today, Town Branch is buried the city in a sewer. Explore georeferenced historic maps and compare with contemporary aerial imagery of this corridor. The proposed and partially built Town Branch Trail is shown. Presentation created for a DOPE Conference field trip. View interactive map.
No more group field tripsSpring semester, 2020
When the pandemic shutdown our classrooms and planned field trips, I decided to a map destinations we had visited in the past few years in various classes. Take a trip.
Lidar scan of bridgeFall semester, 2019
After a fall field trip to the Red River Gorge to test our maps, I discovered the lidar sensor on an iPad Pro. A half an hour of scanning yielded a fair model of the suspension bridge. Visit the interactive model.
Scenic trail indexSummer semester, 2019
Often, we talk about a trail's length or steepness with other dimensions gleaned from the base map. In this experiment we are creating zones at discreet locations along trail and estimating the character of that location. Visit the 3D map and web page.
Historic entrance to Mammoth Cave rendered from lidar point cloudSpring semester, 2019
45-second video of flyover to Mammoth Cave
A demonstration of ArcGIS Pro animation features using lidar data and aerial photography.
Lidar in the Red River GorgeFall semester, 2018
Over the semester, students mapped and visited arches, waterfalls, and other interesting landforms in Kentucky's Red River Gorge Geological Area. They adopted a landform and produced maps, analyses, 3D visualizations, and a web page that explores their arch. Visit the web page.
Bluegrass Trails, a student mapping projectSpring semester, 2018
Students mapped public areas using open source software in the Kentucky Bluegrass that offered hiking, walking, or recreation to the public. They could select from one of 10 areas that offered strenuous cliff-lined hiking, sculpture garden walks, and lake-view dog parks. Visit the web page.
Cumberland Gap NHP mapFall semester, 2017
Explore Cumberland Gap Bird's Eye view!
Students map Town Branch Trail and publish a websiteSpring, 2017 in Fayette County, Kentucky
Town Branch Trail in maps
Students create many maps and a website for the soon-to-be-built Town Branch Trail during the Spring 2017 semester in the GEO 409 (Advanced Topics in GIS) in the Department of Geography, University of Kentucky. We used mainly open source GIS software QGIS and GitHub to create and publish our maps.
We used mainly open-source GIS software QGIS and GitHub to create and publish our maps. For the final project, students grouped into separate teams for web page production, field GPS and photography, story production, and 3D mapping.
An interactive map of the content produced for the final project can be found in the following map:
The students compiled their maps, geotagged photos, and stories in a nicely designed website (https://reece2ke.github.io/geo409_site).
We focused on 3D mapping in the last part of the semester. The maps and animations can be found on this website (http://boydx.github.io/tbt).
Pilot Knob State Nature Preserve student mapping projectFall, 2016 in Powell County, Kentucky
Students in NRE 355 (a GIS calass at the University of Kentucky Natural Resources and Environmental Sciences program) visited the 740-acre Pilot Knob State Nature Preserve on September 21, 2016, and used mobile devices to collect GPS data for the existing trail network. They mapped approximately 3.2 miles of trail then used ArcGIS and CARTO to measure the trails and create a 2D map and 3D visualizations of the nature preserve. Students then created websites to showcase their work.
http://sweb.uky.edu/~blshea1/nre355/pksnp contains maps, animations, and links to student pages.
Bike/Pedestrian v. Car Collision AnalysisJanuary 2004 to April 2016 in Fayette County, Kentucky
During the 2016 spring semester, GEO 409 undergraduate GIS class analyzed and mapped collisions of cars with pedestrians and bicyclists. We focused on 12 years of data (1/2/2004 - 4/8/2016) for Fayette County, Kentucky, which contains the city of Lexington and a population of over 300,000. The county is home to Kentucky's largest university (us!) and offers a walkable and bikeable campus with connections to a vibrant downtown. Explore these maps to find demographic information of cyclists involved in collisions with automobiles.
3D mapping and scripting in ArcPyAutomating the processing of spatial data
In Geo 409, we developed tools to process spatial data for any area of interest and feed other visualization platforms, like QGIS 3d mapping and CartoDB. This lab had an utility outside of class. A guidebook publishing company, Wolverine Publishing, needed maps for a popular climbing area in Idaho, City of Rocks. Find the Github repo and sample maps here.
Lexington's Urban Tree Canopy Cover
An exploration of measuring canopy cover in Lexington's urban service area
Inspired by the Davey Resource Group's October 2013 study of canopy cover using 2012 NAIP imagery within Lexington's Urban Service Area, a GIS class at the University of Kentucky created a similar, though limited, evaluation. We used 2014 NAIP imagery to create an NDVI image and field tested our canopy threshold at a NDVI value of 0.23. Our measurement was generally higher by 1%, since we did not remove areas with a high vegetative index, such as baseball fields, as was done by the Davey Resource Group. Using zonal statistics on both canopy cover datasets, we counted the number of pixels classified as canopy cover by polygon features in parcels, landuse, and US Census blocks and block groups. We also looked at canopy rates per person via the 2010 census blocks and 2013 median home value.
Student Observations and Analysis of UK Campus Celebrations
During (and after) the 2015 UK men’s NCAA basketball tournament games
Their topics include: locations of campus rental properties, noise pollution from major party locations, population density, and changes in social media engagement during and after games.
A selection of student map projects, Fall semester, 2014
15 student teams from two GIS courses mapped, measured, and photographed 603 trees in the Arboretum Woods. Each team was given (approximately) an acre zone and they used common mobile devices and low-cost apps to GPS and photograph the most significant trees. Each team made a poster and presented them during a 2014 International GIS Day event. Since students photographed each tree, we made an interactive map that shows these photos and can be used for geolocation while in the woods. Look at trees now!
Hiking publication for the north half of the Daniel Boone National Forest
Four 19" x 27" maps show all official hiking trails in the north half of Kentucky's Daniel Boone NF. While focusing on the Sheltowee Trace, the publication shows popular destinations like the Red River Gorge and Cave Run Lake. The map includes 50-foot elevation contours, canopy cover, and GPS mapped trails at a scale of 1" to 1/2 mile. An exciting project has been launched to geocode and present a photograph for each mile of the Sheltowee Trace: http://www.SheltoweeTrace.com/hike
Visualizing University of Kentucky's Pedestrian Network
Modeling campus in ArcGlobe using the LiDAR elevation data and UK’s Facilities Information Services latest datasets.
Lexington Walkability Analysis
How close do you live to a pedestrian path?
A Pedshed is used to show how many people are connected by pedestrian paths and sidewalks with either a five-minute or fifteen-minute walk. Only roads with sidewalks are included in the analysis. It is assumed that people can walk faster on pedestrian paths (3.4 mph) than roads with sidewalks (2.8 mph). That's fast! For more casual walking, speeds are about half as fast.
Paved paths and sidewalks were attributed and digitized from 2010 aerial photography by students in University of Kentucky Department of Geography's GEO 409 course, Spring 2014. This analysis has a focus on existing access and potential future access (of various completed designs) of Lexington's two longest shared-use trails, the Legacy and Town Branch Trails.
How more connected would Lexington be if the Legacy Trail and Town Branch Trail were completed?
Five-Minute Walk From All Existing Pedestrian Paths
Approximately 149,000 Fayette County residents (50%) live within a five-minute walk (on a sidewalk) of an existing paved pedestrian path, such as shared-use trail, park walking trail, and school walking path.
Fifteen-Minute Walk From Existing Town Branch & Legacy Trails
Approximately 11,500 Fayette County residents (approximately 3.8%) live within a fifteen-minute walk (on a sidewalk) of existing Town Branch Trail and Legacy Trail facilities. View a dynamic map of this scenario here.
Fifteen-Minute Walk From Completed Town Branch Trail Phase III Without Bridge Across Town Branch
Approximately 12,800 Fayette County residents (4.3%) would live within a fifteen-minute walk (on a sidewalk) of Phase III of Town Branch Trail and Legacy Trail facilities. This option does not include a bridge across Town Branch.
Fifteen-Minute Walk From Potential Future Town Branch & Legacy Trails (with bridge across Town Branch)
Approximately 38,900 Fayette County residents (12.5%) would live within a fifteen-minute walk (on a sidewalk) of finished Town Branch Trail and Legacy Trail facilities. View a dynamic map of this scenario here.
Pedestrian V Car Collision Analysis
Fayette & Jefferson Counties, February, 2014.
Point locations for collisions were downloaded from the Kentucky Collision Analysis for the Public (http://crashinformationky.org/) hosted by the Kentucky State Police. Analysis was performed for Kentucky's Fayette and Jefferson Counties for data period January 5, 2003 - February 23, 2014 as part of GEO 409, Spring 2014. An ArcGIS ModelBuilder and Python script was created to automate geoprocessing of data and map generation.
- AMONG ALL COLLISIONS 4,592 pedestrians v. car collisions occurred with 173 pedestrian fatalities (3.8% of total) and 4223 pedestrian injuries (92% of total).
- AMONG ALL COLLISIONS WITH PEDESTRIANS USING ALCOHOL OR DRUGS 257 pedestrians v. car collisions occurred with 26 pedestrian fatalities (10%) and 227 pedestrian injuries (88% of total).
- Rate: 6.1 collisions per 1,000 current residents
- Download Map
- AMONG ALL COLLISIONS 1,689 pedestrians v. car collisions occurred with 47 pedestrian fatalities (2.9% of total) and 1580 pedestrian injuries (94% of total).
- AMONG ALL COLLISIONS WITH PEDESTRIANS USING ALCOHOL OR DRUGS 130 pedestrians v. car collisions occurred with 9 pedestrian fatalities (6.9%) and 118 pedestrian injuries (91%).
- Rate: 5.5 collisions per 1,000 current residents
- Download Map
Scenic Landscape Index
Fayette County, November, 2013.
Bicycle vs. Car Crash Analysis
Kentucky's Distressed Areas
Kentucky’s population is nearly balanced between urban and rural with 52% living in rural census block groups. Economic and social distress is more likely to occur in rural areas. 61% of Kentucky’s distressed population lives in rural areas and the majority of those areas have surface coal mining permits. More detail...