Use the NE min zoom to cull places at low zooms.#1693
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…g the NE min zoom as the min_zoom property, but had failed to actually act on that by removing items outside of the zoom range.
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Here's what I see in Natural Earth for these zooms:
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Also, your zoom 2 looks pretty weird!? |
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The likely reason you're not seeing Canada region labels at zoom 3 is they are set to 3.5 and Tangram only does the evaluation at zoom 3 (and 3.5 !< 3 so it filters them out). Or your PR / existing code filters them. Looks like this PR is doing the right thing (nominal zoom + 1), so might be in the setting of min_zoom, please ensure that's taken from Natural Earth's |
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Yup, zoom 2 was messed up because I was using the Go version of
Which is has a bunch of cities on it. 🎉 (Although no space for London? What's up with that? 🙀) |
We were already using the NE min zoom as the min_zoom property, but had failed to actually act on that by removing items outside of the zoom range.
Overall file size reduction (NOTE: most of the very low zoom labels come from the
earthlayer - things like continent labels):Zoom 0
It's all continent and ocean labels, no places visible.
Zoom 1
It's all continent and ocean labels, no places visible.
Zoom 2
I was expecting some places to be visible at this zoom level, as some are present in the tiles. Perhaps the label collision prevents any from appearing?
Zoom 3
Looks like a pretty good selection of capitals, major cities and country labels.
Zoom 4
Nice overview of US states and major cities. Do we have the same state data for Canada - given that we show the state borders, it might be nice to label them too? Perhaps a ☔ issue?