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GeoDesigning in the Cloud: Online design of Low Distortion Projections

  • Oct 17, 2013 · 11:00 AM
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11:00 AM - 12:00 PM PST
Presenters: Richard A. Nava and Michael L. Dennis
Website: https://geo.ldpdesign.com/
Description:
Projected coordinate systems are distorted — it is a Fact of Life. Linear distortion is the difference in distance between a pair of projected (map grid) coordinates and the true “ground” distance on the surface of the Earth. Although such distortion cannot be eliminated, it can be minimized using Low Distortion Projections (LDPs). LDPs are conformal map projections intended to cover the largest area with the least linear distortion possible. These goals are at odds with one another, so LDP development is an optimization problem that can be complex. This presentation shows how the design process is facilitated using the online LDP Design application. The application provides an intuitive graphical interface for interactively creating LDPs in the Cloud and seeing design performance in real time. It can be used to design new LDP systems, analyze existing conformal systems, display distortion, and export distortion rasters and LDP coordinate system definitions.

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  • Rosa

    It was informative.

    1 · October 17, 2013

  • Jerry S.

    Wisconsin Coordinate Reference Systems, Second Edition
    This handbook is a technical guide and resource for those who work with geospatial information in Wisconsin. It provides a brief overview of the history, evolution, and basics of Wisconsin’s coordinate reference systems, and compiles in one place the technical specifications for systems most commonly used in the state. (Originally published April 2009, minor revisions January 2012)

    http://www.sco.wisc.edu/images/stories/publications/WisCoordRefSys_January2012.pdf 4.59MB

    http://www.sco.wisc.edu/images/stories/publications/WisCoordRefSys_January2012.pdf

    October 11, 2013

  • Amir B.

    This presentation will help you understand the "Ground" to "Grid" scaling and rotation that occurs when entering a survey plat\deed. Also shows the motivation of having a Low Distortion Projection where the "Ground" and "Grid" are not far off from each other.

    September 27, 2013

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