Matthew Bloch

When data is imported, mapshaper converts it into an internal data format. Some information in the original GeoJSON is lost -- for example, whether the feature was a Polygon or...

You are correct, mapshaper will not change coordinates unless you use the `-proj` command to reproject your dataset.

I agree that `-filter-islands` could be improved. I'd like to propose the following changes. 1. Adding a `keep-shapes` option to `-filter-islands`, analogous to the `keep-shapes` option of the `-simplify` command....

@WeiaR I think the graticule does give a useful frame of reference... I can also imagine Cupola being used in a series of small-multiple thematic maps without a graticule.

I'll look into how to correct the E/W asymmetry. It looks like there's an assumption somewhere in my code that the central meridian is at 0 degrees. You noted a...

Hi @WeiaR, I (temporarily) set the central meridian to 0 in the mapshaper code. I realize that this is not how you wish your projection to appear, and I'll try...

Hi @WeiaR, I fixed the problem with non-zero central meridians... projecting to Cupola in mapshaper should work now. This screenshot is what you get if you open [this link](https://mapshaper.org/?q&files=https://int.nyt.com/newsgraphics/vmap/examples/world_land_polygon.json) and...

Thank you for sharing your cool projection with us!

To adjust the graticule, you would run `graticule interval=30` instead of just `graticule` You can see the options for graticule by running `help graticule` in the console. If you want...

@WeiaR Your note looks fine to me, thanks for asking :) @dkapitan I haven't used Python for map making.... I know that some map making software will let you work...