Leaflet

Introduction to mapping with {sf} & Co.

At the “Rencontres R 2018” in Rennes, I proposed a brief introduction to mapping using the recent {sf} package and some other interesting packages. This blog post is an extended version of my presentation allowing me to share the code of the different maps that appeared on it. It’s still a brief …

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Polygons tint band with leaflet and simple feature (library sf)

Stackoverflow is again a source of inspiration. I found this question on tint bands in leaflet, not related to R originally but I though I could answer it with R easily. This is also a good one for me to play with this new simple feature library sf and use it with leaflet. My simple solution is to …

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How to fill a hatched area polygon with holes in leaflet with R

Drawing polygons filled with a hatched background is quite easy with classical plot in R. This only requires to define density and angle parameters of polygon function. SpatialPolygons from library sp also uses this polygon function. However, if you want to draw a hatched area of a SpatialPolygons …

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Add multiple layers in leaflet widget with R

Library leaflet with R is well integrated with pipe writing (%>%). Thus, it is really easy to add multiple layers and options in a leaflet widget. If you want to add a lot of layers in your widget, it is not necessary to provide a “addPolygons” for each of these layers, you can simply use a loop. …

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