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Add --accumulate-attribute to tippecanoe-overzoom (#189)

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* Starting to factor out attribute accumulation into its own file

* Continuing to factor out attribute accumulation

* Reduce duplicate code

* Plumbing the accumulate-attribute option around

* Call the attribute accumulator

* Test that accumulation works

* Add missing #includes

* Don't sort within individual multiplier clusters

Doing so throws off the spatial distribution of the low zooms

* Docs and changelog

* Add comments
This commit is contained in:
Erica Fischer
2024-01-23 15:41:36 -08:00
committed by GitHub
parent f957f30f90
commit cbf222754b
17 changed files with 493 additions and 431 deletions
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man/tippecanoe.1
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@@ -1268,4 +1268,6 @@ reads tile \fB\fCinz/inx/iny\fR of \fB\fCin.mvt.gz\fR and produces tile \fB\fCou
\fB\fC\-m\fR: If a tile was created with the \fB\fC\-\-retain\-points\-multiplier\fR option, thin the tile back down to its normal feature count during overzooming. The first feature from each cluster will be retained, unless \fB\fC\-j\fR is used to specify a filter, in which case the first matching filter from each cluster will be retained instead.
.IP \(bu 2
\fB\fC\-\-preserve\-input\-order\fR: Restore a set of filtered features to its original input order
.IP \(bu 2
\fB\fC\-\-accumulate\-attribute\fR: Behaves as in \fB\fCtippecanoe\fR to sum attributes from the features of a multiplier cluster that are not included in the final output. The attributes from features that are filtered away with \fB\fC\-j\fR are \fInot\fP accumulated onto the output feature.
.RE