Lauren Winkler

Print and Web Cartography Portfolio

Web map thumbnail of the Evolution of Pittsburgh's River Bridges

The Evolution of Pittsburgh's River Bridges

This map is an interactive companion to the book, Pittsburgh's Bridges (Images of America), by Todd Wilson, PE, and Helen Wilson, showcasing how the river bridges in Pittsburgh, Pennsylvania evolved from the wooden covered bridges of yesterday to those that define the skyline today. Users can scroll the slider through Pittsburgh's 200-year history to see when and where bridges first appeared and why the city became known as the "City of Bridges". The site also features a list and search for all of the city's river bridges - past and present.

This map was developed using custom JavaScript based on the Leaflet and Mapbox JavaScript APIs to import CSV data for the bridges as proportional circle markers, symbolize the markers based on the bridge type with a highlight for recently built bridges, create a custom year slider allowing users to see the bridges that existed in a specific year, and create a custom list and search box for users to select any bridge from any year.

This map utilized a mapping workflow based on Jesse James Garrett's elements of the user experience. Before developing the map, I identified the map's objectives and content and functional requirements and followed an example map and a mockup to guide the development process.

Pittsburgh's Bridges poster

Pittsburgh's Bridges

This map is a companion poster to the book, Pittsburgh's Bridges (Images of America), by Todd Wilson, PE, and Helen Wilson. This poster highlights the river bridges -- past and present -- featured in the book. It was presented at the 2015 NACIS conference.

This map was developed in ArcGIS Desktop. Photos and information about each bridge were added in Photoshop.

Web map thumbnail of Kenya Lighting Sources

Lighting Energy Sources in Kenya

This Leaflet and Mapbox web map shows the prevalence of electric lighting and traditional lighting (pressure lamp, lantern, tin lamp, gas lamp, fuel/wood, solar, and other lighting energy sources) across Kenyan counties in 2009. Electric and traditional lighting usage is represented as proportional symbols and the percentage of households using electricity per county is represented as a choropleth. Users can hover over a county to see the percentage and number of its households using each lighting source.

This map was developed using custom JavaScript based on the Leaflet and Mapbox JavaScript APIs to import GeoJSON data for electric and traditional lighting as proportional circle markers, dynamically join the electricity usage data to county boundaries to create a choropleth map, and create custom hovers and a detail panel showing the aggregated and individual lighting usage per county.

This map utilized a mapping workflow based on Jesse James Garrett's elements of the user experience. Before developing the map, I identified the map's objectives and content and functional requirements and followed an example map and a mockup to guide the development process.

Web map thumbnail of Unemployment Rates in Kentucky: 2001-2013

Unemployment Rates in Kentucky: 2001-2013

This Leaflet web map shows unemployment rates in Kentucky between 2001 and 2013.

This map was developed using custom JavaScript based on the Leaflet JavaScript API. The unemployment rate data is stored in a CSV file and joined to the county geometries using the Papa Parse JavaScript library. The unemployment rates per county are then represented as a choropleth map, using the ckmeans clustering method in the Simple Statistics library. Users can scroll the slider bar to see how unemployment rates have changed between 2001 and 2013.

Web map thumbnail of Vacant Housing in Kentucky

Vacant Housing in Kentucky

This Leaflet web map allows users to explore various types of vacant housing (rentals, houses for sale, seasonal properties, etc.) in Kentucky, as obtained from the 2010 U.S. Census. Users can select an attribute from the dropdown to explore the prevalence of that type of vacant housing across the state, click a county to view the vacancy rate for that type of housing, or hover over a county to view the total number of each type of vacant housing in that county.

This map was developed using custom JavaScript based on the Leaflet JavaScript API with an HTML dropdown. The housing vacancy rates are represented as a choropleth map, using the ckmeans clustering method in the Simple Statistics library.

Web map thumbnail of Heritage at Risk: The Loss of Historic Metal Truss Bridges in Pennsylvania

Heritage at Risk: The Loss of Historic Metal Truss Bridges in Pennsylvania

In 2001, an assessment showed that Pennsylvania had 333 historically significant metal truss bridges. Since then, 40% of those bridges intended to be preserved have been demolished. This CartoDB web map shows the state of historically significant metal truss bridges in Pennsylvania and identifies which counties and Pennsylvania Department of Transportation engineering districts have been most and least successful at their preservation.

Data is initially aggregated by couty. Users can click a county to see the percent of historically significant metal truss bridges remaining in that county. As they zoom in, individual bridges become visible, showing whether they are still standing or demolished. Users can click each bridge to get additional information.

This map was initially developed in CartoDB by spatially joining the bridges and their statuses to county boundaries, calculating the county bridge retention rates, applying symbology using CartoCSS, and adding additional data, info windows, and explanatory text. Later, the map was customized using CartoDB.js.

Web map thumbnail of Power Near and Far: Coal, Hydroelectric, and Wind Power Plants in the US

Power Near and Far: Coal, Hydroelectric, and Wind Power Plants in the US

This Leaflet web map displays coal, hydroelectric, and wind power plants in the US. The size of the circle indicates the total electrical capacity of the power plant from all of its fuel sources, in megawatts.

Power plants from each fuel source are stored in layers, which users can turn on and off through the table of contents. Users can also click a point on the map to see only power plants within 500 km of that point and the total power they generate. After selecting an area of interest, users can click a specific power plant within the 500 km radius to see its name and electrical capacity.

This map was developed using custom JavaScript based on the Leaflet JavaScript API to import GeoJSON data as proportional circle markers, create a layer control, create a 500 km spotlight filter around a clicked point, and create popups of aggregated and individual electricity capacities.

Appalachian Trail map

The Appalachian Trail

This print map displays the Appalachian Trail on a georeferenced copy of the 1957 Landforms of the United States map by Erwin Raisz.

This map was created in QGIS by georeferencing the Landforms of the United States map, using graticule intersections as the control points.

Web map thumbnail of US Cancer Mortality Rates

US Cancer Mortality Rates

This CartoDB web map shows the average cancer mortality rate from 2008-2012 in each US county, per 100,000 people.

Users can click a county to see its specific cancer mortality rate.

This map was developed in CartoDB by joining a CSV file of cancer mortality rates to county boundaries, symbolizing the resulting data as a choropleth map using CartoCSS, and adding info windows and annotations.