diegoripley/tippecanoe
1
0
Fork 0
mirror of https://github.com/felt/tippecanoe.git synced 2026-10-05 09:55:41 +02:00
Code Issues Packages Projects Releases Wiki Activity

Combine mean and categoricality across reader threads

Browse Source
This commit is contained in:
Erica Fischer
2023-02-09 10:39:30 -08:00
parent fba86ebe24
commit 8264b4096a
1 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mbtiles.cpp
+13
View File
@@ -850,6 +850,19 @@ std::map<std::string, layermap_entry> merge_layermaps(std::vector<std::map<std::
if (fk->second.max > fk2->second.max) { if (fk->second.max > fk2->second.max) {
fk2->second.max = fk->second.max; fk2->second.max = fk->second.max;
} }
fk2->second.xsum += fk->second.xsum;
fk2->second.ysum += fk->second.ysum;
fk2->second.count += fk->second.count;
if (fk->second.numeric_count + fk2->second.numeric_count > 0) {
fk2->second.mean = (
fk2->second.mean * fk2->second.numeric_count +
fk->second.mean * fk->second.numeric_count
) / (fk2->second.numeric_count + fk->second.numeric_count);
fk2->second.numeric_count += fk->second.numeric_count;
}
} }
} }