Ray

Hi @kkdd. Yeh, double precision in WebGL would be a better solution overall as it would give high precision for the whole map. Although, I don't know enough about shaders...

Hi @robertleeplummerjr. Sure, although apologies, I'm a data analyst not a programmer so maybe I'm not fully understanding the unit testing. What do you mean by this pull request breaks...

Ok, so I've been looking through the glify code and it looks like this loss of precision is happening once the lat/lng coordinates get converted to pixel coordinates (`latLonToPixel`) and...

I have an open pull request on the leaflet.glify repo which should solve this issue https://github.com/robertleeplummerjr/Leaflet.glify/pull/138 Until this pull request gets reviewed, I have a fork of the leafgl package...

That's good. Tbh, the performance difference really should be negligible. I may have added some other things to the fork which may be affecting performance, though I can't quite remember....