Opened 8 years ago

Closed 8 years ago

Last modified 8 years ago

#3993 closed defect (worksforme)

tiles are "flooded" with the color of secondary roads

Reported by: Matana Owned by: mapnik-team@…
Priority: minor Milestone:
Component: mapnik Version:
Keywords: flooded flood rendering orange Cc:


In the Bujumbura area (Burundi), all tiles at zoom lever 17 (only) are "flooded" with the orange color of secondary roads. The area is huge:

he south-western corner is this:

the south-eastern corner is:

the north-eastern corner is:

a similar bug is reported from some area in scotland, where a huge area is filled as a graveyard at zoom level 14, See

this looks like a severe rendering problem, where an automatic "color-fill" command doesn't find its boundary and so floods all surrounding area

Other users confirmed the bug (at

Change History (2)

comment:1 Changed 8 years ago by Matana

Resolution: worksforme
Status: newclosed

After changing in JOSM the "Avenue Rusama" to a tertiary highway (for test purposes) the tiles in Zoom 17 were rendered correctly! After changing it back to a secondary road the tiles are still rendered correctly. It seems the problem was with this one road in Bujumbura, though I have no clue as to WHAT was wrong. All I see is that it is now rendered well.

comment:2 Changed 8 years ago by Matana

Priority: criticalminor
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