toTopoJSON: Transform one or several SpatialPolygonsDataFrame into a...
In joelgombin/toTopoJSON: Create topojson files

Description Usage Arguments Value References

toTopoJSON takes one or several SpatialPolygonsDataFrame objects and creates a topojson file, multi-layered if needed. This functions needs the topojson CLI utility to be installed (see https://github.com/mbostock/topojson/wiki/Installation).

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toTopoJSON(SPDF, path = getwd(), filename = NULL, simplification = 1,
  quantisation = "1e4", width = 800, height = 400, properties = NULL,
  id = NULL)

`SPDF`	a named list of `SpatialPolygonsDataFrame` objects. The names of the list elements need to be the same as the names of the SPDF objects.
`path`	the path where the topojson file should be registered. By default, the working directory.
`filename`	the name of the topojson file, without extension. By default, the name of the first SPDF object.
`simplification`	the geometry simplification factor. A numeric between 0 and 1, 0 being the maximum simplification, 1 retaining all the subtleties of the geometries. See https://github.com/mbostock/topojson/wiki/Command-Line-Reference for more details.
`quantisation`	maximum number of differentiable points along either dimension.
`width`	width of the desired output (in pixels)
`height`	height of the desired output (in pixels)
`properties`	the names of the properties of the SPDFs to be exported to the topojson file. A vector of character strings. If NULL (the default), all columns of the SPDFs dataframes. If "", no properties are included in the TopoJSON file.
`id`	the name of the SPDF column used as ID. By default, no ID.