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Track sample values for each attribute in each layer

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This commit is contained in:
Eric Fischer 2017-07-17 13:28:46 -07:00
parent b1771a3365
commit 77bf14bfb0
3 changed files with 34 additions and 8 deletions
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37
geojson.cpp
View File

@ -429,17 +429,42 @@ int serialize_geometry(json_object *geometry, json_object *properties, json_obje
}
}
// XXX tilestats: tas.type shouldn't be used since, type is also tracked as variant inside it
if (tas.type >= 0) {
auto fk = layermap->find(layername);
fk->second.file_keys.insert(std::pair<type_and_string, type_and_string_stats>(tas, type_and_string_stats()));
}
if (track) {
type_and_string attrib;
attrib.type = metatype[m - 1];
attrib.string = metaval[m - 1];
if (track) {
auto fka = fk->second.file_keys.find(tas);
if (fka == fk->second.file_keys.end()) {
fprintf(stderr, "Can't happen (tilestats)\n");
exit(EXIT_FAILURE);
}
// XXX increment in type_and_string_stats.sample_values
type_and_string attrib;
attrib.type = metatype[m - 1];
attrib.string = metaval[m - 1];
if (attrib.type == mvt_double) {
double d = atof(attrib.string.c_str());
if (d < fka->second.min) {
fka->second.min = d;
}
if (d > fka->second.max) {
fka->second.max = d;
}
}
if (!fka->second.sample_values.count(attrib)) {
if (fka->second.sample_values.size() < 1000) {
fka->second.sample_values.insert(attrib);
}
}
fka->second.type |= (1 << attrib.type);
}
}
}
}

4
mbtiles.cpp
View File

@ -367,6 +367,8 @@ std::map<std::string, layermap_entry> merge_layermaps(std::vector<std::map<std::
exit(EXIT_FAILURE);
}
// XXX tilestats: merge file-keys
for (auto fk = map->second.file_keys.begin(); fk != map->second.file_keys.end(); ++fk) {
out_entry->second.file_keys.insert(*fk);
}
@ -381,8 +383,6 @@ std::map<std::string, layermap_entry> merge_layermaps(std::vector<std::map<std::
out_entry->second.points += map->second.points;
out_entry->second.lines += map->second.lines;
out_entry->second.polygons += map->second.polygons;
printf("%zu %zu %zu\n", out_entry->second.points, out_entry->second.lines, out_entry->second.polygons);
}
}

1
mbtiles.hpp
View File

@ -16,6 +16,7 @@ struct type_and_string_stats {
std::set<type_and_string> sample_values;
double min = INFINITY;
double max = -INFINITY;
int type = 0;
};
struct layermap_entry {