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Don't coalesce features that have different IDs.

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Remove the 700-point limit on coalesced features, since
polygon merging is no longer a performance problem.
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Eric Fischer
2017-12-13 12:05:53 -08:00
parent 82a2b5dfdc
commit 2e32004589
7 changed files with 560 additions and 79 deletions
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README.md
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@@ -240,8 +240,8 @@ tippecanoe -z5 -o filtered.mbtiles -j '{ "ne_10m_admin_0_countries": [ "all", [
### Reordering features within each tile
* `-pi` or `--preserve-input-order`: Preserve the original input order of features as the drawing order instead of ordering geographically. (This is implemented as a restoration of the original order at the end, so that dot-dropping is still geographic, which means it also undoes `-ao`).
* `-ao` or `--reorder`: Reorder features to put ones with the same properties in sequence, to try to get them to coalesce. You probably don't want to use this.
* `-ac` or `--coalesce`: Coalesce adjacent line and polygon features that have the same properties. You probably don't want to use this.
* `-ao` or `--reorder`: Reorder features to put ones with the same properties in sequence, to try to get them to coalesce. You probably want to use this if you use `--coalesce`.
* `-ac` or `--coalesce`: Coalesce adjacent line and polygon features that have the same properties. This can be useful if you have lots of small polygons with identical attributes and you would like to merge them together.
* `-ar` or `--reverse`: Try reversing the directions of lines to make them coalesce and compress better. You probably don't want to use this.
### Adding calculated attributes