plantain

I think I'm seeing the same behaviour, and I have a JSON file that reproduces it quite nicely with tippecanoe -P --coalesce-smallest-as-needed --detect-shared-borders --extend-zooms-if-still-dropping -z8 -pw [1700.zip](https://github.com/mapbox/tippecanoe/files/2071380/1700.zip) tippecanoe is multiple...

>"It does look like the gaps are being introduced during polygon cleanup with Wagyu. I don't see them with cleanup turned off." @ericfischer, is the Wagyu polygon cleanup controlled by...

I think (at least in my example) it is unrelated to polygon cleanup then, as disabling it produces almost no difference. Left: without cleanup, Right: with cleanup. ./tippecanoe/tippecanoe --detect-shared-borders -z8...

For comparison, mapshaper shows a lot of the whitespace is 'real', but the weird overlapped artifacts aren't there.

Attached above - 1800.gz.

The zoom in particular is from this location:

We are seeing thousands of these in the wild every day, almost all from iOS/Safari.

100000. It doesn't appear to be overflowing that. On Sun, 30 Aug 2020, 9:51 pm Dave Gill, wrote: > @Plantain > What is the value of your namelist variable that...

&fdda obs_nudge_opt = 1,1 max_obs = 100000 fdda_start = 0,0 fdda_end = 360,360 obs_twindo = 0.5,0.5 obs_ionf = 10 / ~ ~

That does look quite plausible, I will retest now. I got that recommended setting from the WRFSolar Users Guide, but it looks like aer_opt=4 hasn't made it into WRF-master yet(?)....