Timeline for Difference between projection and datum
Current License: CC BY-SA 2.5
7 events
| when toggle format | what | by | license | comment | |
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| Jan 10, 2018 at 13:26 | history | wiki removed | Ian Turton | ||
| Dec 7, 2016 at 16:58 | history | made wiki | Post Made Community Wiki by whuber | ||
| S Mar 21, 2011 at 21:13 | history | suggested | Brian Cowper | CC BY-SA 2.5 |
Manifold recently changed the url for their online manual, link updated to new location.
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| Mar 21, 2011 at 21:12 | review | Suggested edits | |||
| S Mar 21, 2011 at 21:13 | |||||
| Aug 10, 2010 at 19:30 | history | edited | scw | CC BY-SA 2.5 |
inline the quote and provide original source for material
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| Aug 3, 2010 at 12:23 | comment | added | Andy | Re: "A datum is a reference ellipsoid together with an offset from the center of the Earth." Just to be complete, it may also include a tilt of the axis of the ellipsoid and a scale factor. Geographic coordinates (latitude and longitude) can be off by hundreds of meters if you use the wrong datum. I have an ArcGIS-oriented overview of projections and datums here: ats.amherst.edu/software/gis/mapping_coordinate_data | |
| Aug 3, 2010 at 12:04 | history | answered | BlocK | CC BY-SA 2.5 |