Mapd shapefiles as layers on immerse


#1

Hi,

If I want to upload a shapefile into mapd it works, but what if I want to visualize the geometry (polygons defined in the shapefile) in the map as a layer on immerse, is this possible?


#2

Hi @dfernan,

Thanks for your interest in Immerse. We are planning to introduce support for backend rendered choropleth very soon. This will enable shapefile rendering and rendering from a table joined to a shapefile.

We’ll have a big announcement in the forum when these features are released, but you can also subscribe to the MapD mailing list at www.mapd.com, or follow MapD on Twitter twitter.com/MapD


#3

at the moment you can just add your shapefiles (i just tried geojson format) on server and use them on choropleth viz (this function isnt officially supported, but i works)


#4

Thanks @aznable, @b23kelly! I am looking for choropleth but not just that, what about lines on a map for example? I just put an example - these lines can be defined as line geometry on a shapefile and ideally this would be an extra layer on the map and then one can overlay points on top of it for example.


#5

i am not exactly an expert on map’s viz, but i guess you could obtain a result like that with actual choropleth implementation, but the number of polygons could pose serious performance problems, because the drawing is client side


#6

As @b23kelly noted, very soon you will be able to render backend choropleths directly from shapefiles, geojson, kml, etc. See the image below for an example, or a screengrab demo here. It will handle millions of polygons, and with some optimizations we’ll be able to go even bigger.


#7

As for line rendering, it will be come to Immerse in the near-to-mid term, and even sooner via the Vega API.