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Add a tippecanoe-decode option to restrict which attributes to decode

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Erica Fischer
2024-11-06 16:59:53 -08:00
parent 23667bb8eb
commit 6a6d47eb07
5 changed files with 16 additions and 5 deletions
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write_json.cpp
+5 -1
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@@ -268,7 +268,7 @@ void write_coords(json_writer &state, lonlat const &ll, double scale) {
}
}
void layer_to_geojson(mvt_layer const &layer, unsigned z, unsigned x, unsigned y, bool comma, bool name, bool zoom, bool write_dropped, unsigned long long index, long long sequence, long long extent, bool complain, json_writer &state, double scale) {
void layer_to_geojson(mvt_layer const &layer, unsigned z, unsigned x, unsigned y, bool comma, bool name, bool zoom, bool write_dropped, unsigned long long index, long long sequence, long long extent, bool complain, json_writer &state, double scale, std::set<std::string> const &include_attr) {
for (size_t f = 0; f < layer.features.size(); f++) {
mvt_feature const &feat = layer.features[f];
@@ -334,6 +334,10 @@ void layer_to_geojson(mvt_layer const &layer, unsigned z, unsigned x, unsigned y
exit(EXIT_IMPOSSIBLE);
}
if (include_attr.size() > 0 && include_attr.find(layer.keys[feat.tags[t]]) == include_attr.end()) {
continue;
}
const char *key = layer.keys[feat.tags[t]].c_str();
mvt_value const &val = layer.values[feat.tags[t + 1]];