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GIS Contributor

Guest contributions to GIS Lounge. Author information is listed at the bottom of each article.
An aerial image with white dots showing the location of planted trees.

Mapping Trees During Planting

by GIS Contributor

STA Logger, developed by TerraLab, can be fitted with tree planters to map the location of newly planted trees.

Categories Maps and Cartography
Examples of topological errors in GIS that can occur during data creation/digitization. Image: Caitlin Dempsey

GIS Data: A Look at Accuracy, Precision, and Types of Errors

by GIS Contributor

What are the types of error found in GIS data? This article reviews the difference between accuracy and precision and explains the most common types of error found in GIS data.

Categories GIS Data Tags accuracy, gis data, imprecision, inaccuracy, precision, spatial data, spatial data quality, types of errors
Screenshot from a GIS software program showing an aerial image with geospatial data overlays for Missouri.

Finding GIS Data and Using QGIS to Map Caves

by GIS Contributor

Dackery Geiman outlines the challenges he encountered finding geospatial data about caves and using QGIS to map cave density in Missouri.

Categories Spatial Analysis Tags caves, missouri, QGIS
Elevation map with shades of green.

GIS in Land Use Planning and Surveying

by GIS Contributor

Michael Parks explains how he used GIS data and imagery to develop geospatial analysis and maps to recommend potential base camp sites.

Categories Spatial Analysis Tags ESRI, QGIS
A detailed map showing a shaded relief area and a popup with attribute data about a fly fishing shop.

Using GIS to Map Fly Fishing Destinations

by GIS Contributor

William Bakemeyer describes how he used QGIS and open source data to create a fly fishing map.

Categories GIS Software Tags open source gis, QGIS
Two images - one from 2013 and one from 2021 showing changes in orange in the coastline of an area.

QGIS from a Graduate Student’s Perspective

by GIS Contributor

Kent Campbell writes about how he has come to view the benefits of using QGIS as a graduate student.

Categories GIS Software Tags open source gis, QGIS
A screenshot showing a transparent green polygon on top of a purple polygon with a dark grey 3D geographic background.

Crowdsourcing Archaeological Data with Participatory GIS

by GIS Contributor

People with little or no training in archaeology or geographic computing systems can build GIS data using Humap’s Placemaker.

Categories GIS Software Tags archaelogy, crowdsourced GIS
Six topographic surfaces compared.

FABDEM: 30 Meter Resolution Bare Earth DEM from Fathom

by GIS Contributor

FABDEM is the first global Digital Elevation Model (DEM) with forests and buildings removed at a 30m resolution.

Categories GIS Data Tags DEM, topographic mapping
Screenshot from a video with a man looking at the screen and the text "How do I get these GIS jobs" written in blue against a yellow background.

The State of GIS Jobs in 2022

by GIS Contributor

Andres Abeyta, Director of Bootcamp GIS reports about the state of GIS jobs as he looks at what skills and experiences job seekers need.

Categories GIS Career and Jobs Tags GIS certificate, GIS jobs report
Screenshot of a map visualizing hurricane wind speeds.

Fluid Earth: Open-source Visualization of Weather and Climate Data

by GIS Contributor

Fluid Earth is a web visualization tool developed by The Ohio State University’s Byrd Polar and Climate Research Center (BPCRC) that enables users to view weather and climate patterns.

Categories GIS Software
A map of underwater ocean sounds created by commercial ships in the North Atlantic. The darker orange areas are higher levels of noise.

Mapping the Sounds of the Ocean

by GIS Contributor

Using arrays of underwater microphones, called hydrophones, scientists can use sound to create images of the environment by converting sound waves to electrical signals. 

Categories Spatial Analysis Tags ocean mapping, sound maps
An aerial image of a port showing rows and rows of shipping containers. An edge of the ocean is the the left of the containers.

The Many Uses of Aerial Imagery

by GIS Contributor

Nearmap’s Tony Agresta outlines the many applications of aerial imagery, including assessing damage after a disaster, reducing crime, valuing properties, and more.

Categories Maps and Cartography Tags aerial imagery
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