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Datum Transformations

Using OSTN15 with QGIS

As you may be aware, the United Kingdom has a new transformation model that is OSTN15. But why? What does it mean to the geospatial community? Without being too nerdy, tectonic plate movement means that the “model” surface (the geoid) is slowly moving away from being the best fit for...

Figure 1: A traverse with an angle blunder

Methods of Analyzing Data, Part 1

This entry is part of 10 in the series September 2016Identifying Blunders with Graphics Mistakes and blunders are an inevitable part of being human. In fact, a wise person once told me that the only people who don’t make mistakes are those who don’t do anything. Because a least squares...

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xyHt News Links: 9/23/16

SimActive Brings Picture-in-Picture 3D Viewing with Version 6.5 ASPRS Executive Director Stepping Down NovAtel announces VEXXIS family of GNSS antennas 3D Target to Launch Payload Lidar at Intergeo Geodetics introduces mobile mapping system with lidar, GPS