setting map boundary / edge when nowrap is engaged

Question

Is there any way to adjust the bounds of the map so that the right-edge of Russia doesn't appear over to the left? You can see in the image I have a MultiPolygon area overlaying Russia but the map and the overlay are split. I'd like that tiny piece of the country to be on the right if possible!

Edge of Russia on the wrong side of the map:

Answer 1

Welcome to SO!

If your multi polygon is the blueish area, then I am afraid you have to refactor your data in order to achieve what you want (shifting the left area onto the right, as if it were stitched back to Russia main land).

Your data (probably GeoJSON?) contains a separate polygon which longitudes are in the [-180, -120] range. Leaflet has no choice but to display it on the left of your map, independently from the noWrap option.

So you would need to dig into your data, and add 360 degrees longitude to every node of this polygon, so that they now sit in the range [180, 300].

Or somehow introduce a "detection" in your code that would perform the longitude addition automatically for shapes which bounds and/or center are far away (let's say in the [-180, -120] longitude range). Leaflet does not perform that operation automatically out-of-the-box.

Note: the noWrap option is for your Tile Layer not to load tiles outside that "central" world (in order to avoid showing multiple copies of the world). But in your case, you want to show a part of Russia / Siberia on an "adjacent copy of the world", so you might want to remove that option, or you will have your polygon not sitting over any basemap.