QGIS is an open source GIS software package that can be freely downloaded. Find step-by-step instructions on how to install QGIS on a Mac.
With the proliferation of KML files created for use in Google Maps, Google Earth, or Google Fusion Table, you may find yourself needing to bring the data from a KML file into ArcGIS. KML files are an XML-based geographic dataset and have an extension of .kml (.kmz are compressed KML […]
I have only taken one formal course in GIS; however, I consider myself a confident practitioner of the software and am constantly learning more despite not having access to a costly software licenses for ArcGIS or similar desktop software. In order to enhance my GIS skills while transitioning from a […]
Update: this site is no longer in existence. A new GIS tutorial site has launched. Run by Anthony Calderon*, GISHowto.com features tutorials in video format for a range of software programs such as ESRI’s ArcGIS, ENVI, MapInfo and Google Earth. The fledgling site also hosts an event calendar, a forum […]
Tutorials for performing GIS functions in ArcGIS desktop (ArcView and ArcInfo). Buffering Demonstration of buffering in ArcGIS. Calculate Area of a Polygon Shows how to calculate the geometry of a polygon in ArcGIS to determine area. Clip Analysis Demonstration of the Clip Analysis function using ArcGIS Desktop. Digitizing Basic digitizing […]
Having sat on both sides of the table, I know that the interview process can sometimes be an uncomfortable and even painful process. To make matters more difficult, the GIS field requires a broad range of skills ranging from cartographic techniques to programming to relational database management. Acquiring enough depth in any of these areas can seem impossible especially when the field is still evolving at a horrendous pace. So what is it that’s really important when it comes to interviewing for a GIS position?
Clip analysis is the function of using the extent of one geographic layer to clip the extent of another geographic layer. For example, if you had a land use layer for an entire county that you only wanted information for a particular city, you would use clip analysis to crop […]
Calculating the eastern and western boundaries of a UTM is very straightforward. Developed by the U.S. Army, the Universal Transverse Mercator (UTM) is an international plane (rectangular) coordinate system. In the coordinate system, the world is divided into 60 zones of 6 degrees longitude. Each zone extends 3 degrees east […]