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MVT questions and improvements #25
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@henhuy I tested this again with distilled MVTs for zoom levels 8-13. At level 14 the forests aint not rendered at all: The gpkg size of My settings:
I keep it in this issue as I think it is a general mapengine problem. |
For the logs: The high level zoom problem has been solved in 21d98df 👍 . |
looks crazy 👀 - what layer is causing this artifacts? |
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Backlog: |
In epp-app I increased the zoom range to 8-15 by setting
(btw,
MAP_ENGINE_MAX_ZOOM
always needs to be desired zoom level+1 which could be fixed..)Now tiles are loaded for the former zoom range (8-12), in levels >12 no data is shown at all.
(1) Is it possible to use the tiles from zoom 12 for 13-15 as well?
So I distilled the entire range by setting
MAP_ENGINE_MAX_DISTILLED_ZOOM = 15
but this takes ages. I just used--parallel-render [number of threads]
for parallelization but unfortunately this does not seem to speed up the process. My testing conditions: [threads: 1/4/12, duration: 5 min, indicator: number of created files, total size].(2) Any idea why this does not work? Have you used django-distill parallelization?
The file size increases vastly with increasing zoom level, even in 13 one tile amounts up to some MB.
(3) Is there a way to define simplification/generalization thresholds for the geoms to reduce the size?
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