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Caitlin Dempsey

Caitlin Dempsey has been the editor of GIS Lounge (https://gislounge.com) since 2001. More about Caitlin Dempsey and GIS Lounge on the contact page. Caitlin Dempsey is also the editor of Geography Realm (geographyrealm.com).
Laptop with QGIS, a desktop GIS software program

Learn GIS for Free

by Caitlin Dempsey

There are a few online options to learn GIS for free. Take advantage of resources that provide you access to free courses from some of the world’s best universities and institutions.

Categories GIS Learning Tags Free GIS, GIS courses, GIS MOOC, mooc, open source gis, OpenCourseWare
QGIS on a laptop. Image: Caitlin Dempsey

How to Learn GIS

by Caitlin Dempsey

There are many ways to learn GIS. Listed here are guides to learn GIS in a classroom, online, or through self-guided methods.

Categories GIS Learning Tags certification, Distance Learning, learn gis, learn GIS for free, learning gis, online training

Finding the Right GIS Program

by Caitlin Dempsey

Choosing the right GIS educational program to set you on the right path towards a GIS career, so be sure to consider all your options before making a decision.

Categories GIS Learning Tags gis certificate program, GIS education, learning gis
Side by side maps showing a UTM file with zones and rows and a UTM grid file with just the zones.

Dissolve Features Based on Attribute in QGIS

by Caitlin Dempsey

This GIS tutorial provides a step-by-step guide on how to dissolve features in QGIS based on an attribute field.

Categories Maps and Cartography
Laptop with QGIS, a desktop GIS software program

How to Find Internships in GIS

by Caitlin Dempsey

Tips for finding a GIS internship: check job boards and internship websites, reach out to local employers, attend career fairs and events, and network.

Categories GIS Career and Jobs Tags employment, gis career, gis internships, gis jobs
A vegetation map of the northwest corner of Wyoming with mostly medium and light green.

United States Cropland Data

by Caitlin Dempsey

The Cropland Data Layer (CDL) is an annually updated GIS dataset developed by the USDA that maps out crops grown in the United States.

Categories Maps and Cartography
Half of the Earth shown in a map.

What is a Map Projection?

by Caitlin Dempsey

Map projections are techniques used to transform the Earth’s three-dimensional surface onto a two-dimensional plane, inevitably introducing some distortion in area, shape, distance, direction, or scale.

Categories GIS Learning Tags azimuthal, conformal, equal-area projections, map projections
A shaded relief map of the contiguous United Stated with medium grey lines showing UTM zones.

Universal Transverse Mercator (UTM) Coordinate System

by Caitlin Dempsey

UTM is a precise, grid-based coordinate system ideal for regional mapping and navigation, utilizing 60 zones to minimize distortion.

Categories Maps and Cartography
A globe of the world with quotation marks.

GIS Poems (According to AI)

by Caitlin Dempsey

To have a little fun with artificial intelligence, I decided to see what poetic geospatial delights ChatGPT could come up with.

Categories Maps and Cartography
A gray map of Oklahoma with the point locations of cities buffered in different sized purple circles depending on the elevation.

Buffers in GIS

by Caitlin Dempsey

A buffer in GIS is a reclassification based on distance.

Categories Spatial Analysis Tags buffering, buffers, spatial analysis
Map of major tectonic plates. Source: USGS.

Where to Find Tectonic Plate GIS Data

by Caitlin Dempsey

There are a few sources of freely available tectonic plate data available in various GIS data formats.

Categories GIS Data Tags geology and GIS, plate boundaries, plate tectonics
A cropped view of a map with a north arrow in bold black with the letter "N" on top of it. A section of Texas and Louisiana can be seen at the top of the image.

Should You Put a North Arrow on a Map?

by Caitlin Dempsey

Do all maps need a north arrow?

Categories Maps and Cartography Tags cartographic elements, cartographic philosophy, Cartography, map elements, map making, orientation, use of north arrows
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  • Learn GIS for Free
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