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Add point retention multiplier (#179)

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* Add an option to retain N times as many points as usual at each zoom

* Tests for point multipler with specified and guessed maxzooms

* Work in progress on inverse spatial ordering

* Fix inverse spatial feature order

* --reorder was depending on a feature index that wasn't being preserved

* Separate ordering by feature_minzoom from ordering inverse-spatially

* Add a test for the inverse spatial ordering

* Store the basezoom/droprate/multiplier decisions in tileset metadata

* Progress on adding filters to tippecanoe-overzoom

* Type promotion for comparison

* Look up the attribute value for ordering

* Add test of thinning and ordering features

* Plumb tippecanoe_decisions metadata through pmtiles

* Be careful not to put infinities in JSON

* Fix accidental dropping in what is meant to preserve sparse points

* Start distinguishing true, false, and null in expressions

* Most of the type conversions

* Add boolean conversions

* Literals and conjunctions

* Add filtering to tippecanoe-overzoom

* Add a test of filtering in overzoom

* Fix boolean conjunctions

* Handle the combination of cluster size and filtering

* Rework dot dropping to reconcile density threshold and multiplier

* Revert "Rework dot dropping to reconcile density threshold and multiplier"

This reverts commit f253a66382.

* Retain points by multiplier within each tile, not in global probability

* Test that intends to verify that the multiplier is reversible

* Get the test to detect the discrepancy

* Mark the start of multiplier clusters with a magic attribute

* Add string-contains

* Add in and ni operators

* Revert "Look up the attribute value for ordering"

This reverts commit 56bc73e49a.

* Revert "Type promotion for comparison"

This reverts commit 6f3256f5af.

* Make number formatting in tippecanoe_decisions consistent

* Revert "Add a test for the inverse spatial ordering"

This reverts commit c8047de9ab.

* Revert "Separate ordering by feature_minzoom from ordering inverse-spatially"

This reverts commit 35b19a223c.

* Revert "Fix inverse spatial feature order"

This reverts commit 5978ecdb44.

* Revert "Work in progress on inverse spatial ordering"

This reverts commit fdf230f632.

* Somehow missed the tests associated with that last revert

* Round-robin assign attributes to partials from across the multiplier

* Count the multiplier separately in each layer

* Fix distribution of accumulated attribute across multiplier features

* Update changelog, version, and docs

* Add "is null" and "isnt null" expressions

* Update interpretation of FSL expressions to pass the tests

* Test to assert that polygons are unaffected by the multiplier

* Clean up and comment

* Remove accidental unused case
This commit is contained in:
Erica Fischer
2024-01-18 15:56:09 -08:00
committed by GitHub
parent e8ca6c6de3
commit 5d92a17193
56 changed files with 83462 additions and 113 deletions
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tile-join.cpp
+4 -42
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@@ -155,46 +155,8 @@ void append_tile(std::string message, int z, unsigned x, unsigned y, std::map<st
mvt_feature feat = layer.features[f];
std::set<std::string> exclude_attributes;
if (filter != NULL) {
std::map<std::string, mvt_value> attributes;
for (size_t t = 0; t + 1 < feat.tags.size(); t += 2) {
std::string key = layer.keys[feat.tags[t]];
mvt_value &val = layer.values[feat.tags[t + 1]];
attributes.insert(std::pair<std::string, mvt_value>(key, val));
}
if (feat.has_id) {
mvt_value v;
v.type = mvt_uint;
v.numeric_value.uint_value = feat.id;
attributes.insert(std::pair<std::string, mvt_value>("$id", v));
}
mvt_value v;
v.type = mvt_string;
if (feat.type == mvt_point) {
v.string_value = "Point";
} else if (feat.type == mvt_linestring) {
v.string_value = "LineString";
} else if (feat.type == mvt_polygon) {
v.string_value = "Polygon";
}
attributes.insert(std::pair<std::string, mvt_value>("$type", v));
mvt_value v2;
v2.type = mvt_uint;
v2.numeric_value.uint_value = z;
attributes.insert(std::pair<std::string, mvt_value>("$zoom", v2));
if (!evaluate(attributes, layer.name, filter, exclude_attributes)) {
continue;
}
if (!evaluate(feat, layer, filter, exclude_attributes, z)) {
continue;
}
mvt_feature outfeature;
@@ -782,7 +744,7 @@ struct tileset_reader {
}
if (source.layers.size() != 0) {
std::string ret = overzoom(source, parent_tile.z, parent_tile.x, parent_tile.y, tile.z, tile.x, tile.y, -1, buffer, std::set<std::string>(), false, &next_overzoomed_tiles);
std::string ret = overzoom(source, parent_tile.z, parent_tile.x, parent_tile.y, tile.z, tile.x, tile.y, -1, buffer, std::set<std::string>(), false, &next_overzoomed_tiles, false, NULL);
return ret;
}
@@ -1606,7 +1568,7 @@ int main(int argc, char **argv) {
st.maxlon2 = st.maxlon;
}
metadata m = make_metadata(name.c_str(), st.minzoom, st.maxzoom, st.minlat, st.minlon, st.maxlat, st.maxlon, st.minlat2, st.minlon2, st.maxlat2, st.maxlon2, st.midlat, st.midlon, attribution.size() != 0 ? attribution.c_str() : NULL, layermap, true, description.c_str(), !pg, attribute_descriptions, "tile-join", generator_options, strategies);
metadata m = make_metadata(name.c_str(), st.minzoom, st.maxzoom, st.minlat, st.minlon, st.maxlat, st.maxlon, st.minlat2, st.minlon2, st.maxlat2, st.maxlon2, st.midlat, st.midlon, attribution.size() != 0 ? attribution.c_str() : NULL, layermap, true, description.c_str(), !pg, attribute_descriptions, "tile-join", generator_options, strategies, st.maxzoom, 2.5, 1);
if (outdb != NULL) {
mbtiles_write_metadata(outdb, m, true);