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| bio | website | oschrenk.github.com |
|---|---|---|
| location | Dusseldorf, Germany | |
| age | ||
| visits | member for | 2 years, 2 months |
| seen | Jan 16 at 17:09 | |
| stats | profile views | 15 |
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Jun 28 |
revised |
Computational most efficient way to convert Cartesian to Geodetic Coordinates Add Toms, 1996 |
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Jun 28 |
comment |
Computational most efficient way to convert Cartesian to Geodetic Coordinates Ground surface will do for now, but I'm also interested in arbitrary geodetic heights in the long run. |
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Jun 28 |
asked | Computational most efficient way to convert Cartesian to Geodetic Coordinates |
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Jun 19 |
awarded | Yearling |
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May 23 |
awarded | Supporter |
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Apr 25 |
awarded | Scholar |
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Apr 25 |
accepted | How are EGM96 and WGS84 related to each other? |
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Apr 25 |
awarded | Quorum |
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Apr 24 |
awarded | Nice Question |
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Apr 24 |
comment |
How are EGM96 and WGS84 related to each other? Ok. After some more reading I get it. The ellipsoid is in fact defined in a way to maximize the congruency (being defined as the theoretical equipotential lines of gravity/the geoid). It's always stated that "the geoid differs from the ellipsoid" in such and such way, which for me is kind of backwards. I think that is what confused me. So in conclusion: The WGS84 Standard defines both, the geoid and the reference ellipsoid. EGM96 also defines both. The geoid in EGM96 though has a better resolution. The changed geoid didn't result in a change of the reference ellipsoid though. |
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Apr 24 |
comment |
Precision when working with spatial data in GIS That your precision should be based on the (project's) needs is understood. I'm evaluating the different models/algorithms to get a grasp of them. |
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Apr 24 |
comment |
How are EGM96 and WGS84 related to each other? I've read this but didn't really understand it, maybe because English isn't my first language or maybe because I'm missing domain specific knowledge, hence my question. So both standards define a geoid and an ellipsoid (with EM96 superceding WGS84). Ok. For me the question that remains is then, that if both ellipsoids have the goal to maximize congruence with its geoid (being defined in the same spec). |
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Apr 23 |
awarded | Editor |
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Apr 23 |
revised |
How are EGM96 and WGS84 related to each other? edited title |
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Apr 23 |
asked | How are EGM96 and WGS84 related to each other? |
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Apr 19 |
comment |
Precision when working with spatial data in GIS Thanks. A table of contents can found here. From the titles I could not discern any comparative (or introductory) studies. From what I'm reading so far I'm missing the link between the real form of the earth to the various representations and how accuracy is then measured. For example how can it be said that Vincenty is accurate to about 0.5mm? |
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Apr 19 |
asked | Precision when working with spatial data in GIS |
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Mar 10 |
comment |
Metric/parameters to compare length of polyline @jul I'm reading up on GIS and conflation methods specifically and I am "collecting" metrics that can be used. While the Hausdorff distance is certainly a very good metric, I am also interested in more basic metrics. |
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Mar 10 |
comment |
Metric/parameters to compare length of polyline My question is not about the distance of two lines (Hausdorff, Frechét) but only about comparing the length. |
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Mar 10 |
awarded | Student |
