Global COGO, Inc. and Tru3D

3-D Coordinate Geometry & Error Propagation

Based Upon the Global Spatial Data Model (GSDM)

(Tru3D website established June 2017 - last modified January 31, 2018)

Email to Global COGO, Inc.

This web page is an interim connection betweeen the previous Global COGO, Inc. web site and a new web site (Tru3D.XYZ) being developed to highlight the true 3-D nature of geospatial data as described in the Second Edition of "The 3-D Global Spatial Data Model: Principles and Applications."

The previous Global COGO web site continues to be maintained.

Items of interest for this new site include:

----- I. Corrections to the Second Edition. If you find others, please let me know.(January 31, 2018)

----- II. Use following CRC Press link to order or use web-search option for possible better price. (November 14, 2017)

--------- CRC Press web site for purchase of Second Edition -- for other options, web search "Global Spatial Data Model Second Edition" (June 11, 2017)

----- III. Flyer developed by CRC Press promoting the Second Edition. (June 11, 2017)

----- IV. Dedication of Second Edition of 3-D book to mentor. (November 5, 2017)

----- V. Poster presented at AGU meeting in San Francisco, December 2016 discussing true 3-D. (June 11,2017)

----- VI. Information for geospatial policy makers. (June 11, 2017)

----- VII. Proposal for establishing a graduate course in characteristics of 3-D spatial data. (June 11, 2017)

----- VIII. Opportunity for surveying profession to provide leadership in use of 3-D digital spatial data. (July 26, 2017)

----- IX. Example of how spatial data accuracy impacts standards. (July 26, 2017)

----- X. Presentation at High-Tech Consortium October 2017. (November 5, 2017)

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