Matthew Bloch

The v0.4.48 release has a new command, `-polygons`, which identifies the rings in a polyline layer and converts each ring to a polygon feature. When rings are nested, the command...

It looks like I have a bit more work to do.... I can replicate Arc's `FeatureToPolygon_management()` function with a sequence of mapshaper commands (see below), but mapshaper currently isn't able...

I just published v0.4.49, which adds a `-polygons gap-tolerance=` option for closing gaps between polylines. I did some tests based on the three arcpy scripts in Natural Earth that use...

There is not currently a way to do this. This kind of function would be useful for making small-scale maps from detailed source data. One question -- how useful do...

I experimented a bit with a similar technique earlier this year. You can try the undocumented mapshaper command `-alpha-shapes`. It converts points to polygons. I'm attaching a sample file. To...

These are all good suggestions, thanks :)

I started working on line and polygon buffering earlier this year. I made some good progress, but need a few more days of uninterrupted work to finish this feature. It's...

The size of a Node Buffer is limited to 2GB on most systems: https://nodejs.org/api/buffer.html#buffer_buffer_constants_max_length Mapshaper accumulates GeoJSON output in a single buffer before writing it to disk. I believe that...

The switch to streaming output that I was talking about is not something that you, the end user, can do. Changes would have to be made to mapshaper's source code....

Hi... I meant to respond to this much earlier, but I got a bit stuck thinking about terminology and how to name the "inner join" option. I think there should...