Satellite imagery from the 1960s and 70s is unheard of minus an impressive set of black and white images declassified by the US government in 1992 and 2002. These panchromatic images (some of them are even stereo!) are from a Read More
In the second part of this edition of the Geospatial Frequently Asked Question (G-FAQ), I continue the discussion started last month of geographic versus Universal Transverse Mercator (UTM) coordinate systems. In last month’s G-FAQ, the focus was on the history Read More
In this two-part edition of the Geospatial Frequently Asked Question (G-FAQ), I turn my attention to a broad topic we have visited before, that of coordinate systems, with a specific focus on two of the most commonly used, geographic and Read More
There are many applications out there that you might find to convert between datums and coordinate systems. In this Free for All, I have put together a list of the most reputable and/or wide-ranging convertors that I could find. As Read More
Staying on topic with my G-FAQ for the month, for this Free for All I feature an online color palette design tool that has taken the color blind into consideration. The website is ColorSchemeDesigner.com and it features a variety of Read More
Continuing with the theme started in last month’s Geospatial Frequently Asked Question (G-FAQ), I turn my attention to practical recommendations that can make your map design more appropriate for the color blind. In the August G-FAQ edition, we found out Read More
Are you working on an atmospheric correction for QuickBird, WorldView-2 or GeoEye-1 imagery? Perhaps you need to convert raw digital numbers for any of these satellites to radiance? If so, then we have new documents online that you need to Read More
In this monthly piece, we give our readers a sense of the high-resolution imagery coverage collected over a specified geography during a three month window. To do this, we pick a high resolution satellite, a defined time period and geography Read More
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