Comments (14)
Now fully implemented in d3-geo-polygon.
To avoid any IP issue I made a fresh implementation of the triangle transformation, and avoided the (possibly though not probably) trademarked name "Dymaxion".
https://beta.observablehq.com/@fil/airocean-projection
https://beta.observablehq.com/@fil/buckminster-fullers-triangle-transformation
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I didn’t mean to make that the default, I just meant in your demo…
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it's already there, by @jasondavies
https://www.jasondavies.com/maps/airocean/
d3/d3-plugins#61
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That one uses a Gnomonic projection, not Fuller’s.
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Are we able to include this for #32? Would make a nice addition
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Doubtful. It looks like Jason has taken down the code (which as far as I know was never released under an open-source license).
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Papers:
- Robert W. Gray (1994). “Fuller's Dymaxion Map”. Cartography and Geographic Information Systems 21 (4). http://www.tandfonline.com/doi/10.1559/152304094782540628
- Robert W. Gray (1995). “Exact Transformation Equations for Fuller's World Map”. Cartographica 32 (3). http://www.utpjournals.press/doi/10.3138/1677-3273-Q862-1885
- John E. Crider (2008). “Exact Equations for Fuller's Map Projection and Inverse”. Cartographica 43 (1). http://www.utpjournals.press/doi/10.3138/carto.43.1.67
- Richard Buckminster Fuller (1944). “Cartography”. US Patent 2,393,676. https://www.google.com/patents/US2393676
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https://www.openstreetmap.org/user/smaprs/diary/39829
Dymaxion C/Python script at: http://emergentweirdness.blogspot.fi/2012/03/dymaxion-conversion.html
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Would be a sweet projection to have available.
@Fil Following links from that emergentwierdness link, I tracked down this quasi-README for the C code that implements the projection by Robert W. Gray.
Some interesting images from there:
These seem to be a map of sorts for navigating his C implementation of the Dymaxion projection.
Maybe this C implementation could be a useful blueprint. Note the license:
/**************************************************************/
/* */
/* This C program is copyrighted by Robert W. Gray and may */
/* not be used in ANY for-profit project without written */
/* permission. */
/* */
/**************************************************************/
Also related to OSGeo/PROJ#232 Add Dymaxion/Fuller Projection which, interestingly, links to this JavaScript implementation of the Dymaxion projection that appears to have been added to that repo by @mbostock . Here's a working JavaScript Dymaxion choropleth that uses that implementation with Protovis (source).
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That was contributed by Vadim Ogievetsky, and I believe it was a direct port from the C code you linked, and therefore is missing appropriate attribution. I will add attribution shortly.
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Attribution added in mbostock/protovis@b653a8c.
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Now fully implemented in d3-geo-polygon(newprojections branch), but it needs a new release of d3-geo (d3/d3-geo#128) before it's usable.
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Looks great, @Fil! My only suggestion is to rotate it 90° so it’s bigger on tall screens (as Jason did previously).
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Related Issues (20)
- Snyder's "Magnifying-Glass" projections?
- Relax d3-array dependency to 1-2. HOT 3
- compatibility of geoRectangularPolyconicRaw with geoInterrupt HOT 3
- There are es2015 in the final package file HOT 3
- Count Number Of Visible Objects Within Projection HOT 1
- What is the source of the projections? HOT 10
- Pangean projection HOT 5
- Two-point equidistant projection has artifacts when showing the whole world HOT 6
- geoPath.curve ? HOT 1
- Support All US Territories in Albers USA projection HOT 7
- geoProject converts hole to MultiPolygon HOT 2
- Using this lib in TypeScript? HOT 2
- interrupted projections sometimes have partially undefined inverse HOT 2
- More customizable Wagner projections (and others)? HOT 7
- Add Cupola projection HOT 14
- A new quincuncial projection HOT 10
- geoStitch mislabels the union of two Polygons forming a hole on the date line as a MultiPolygon
- Could not find a declaration file HOT 2
- ISEA visualization? HOT 3
- No types definition package of d3-geo-projection HOT 1
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