leafletR | R package to create interactive web | Map library
kandi X-RAY | leafletR Summary
kandi X-RAY | leafletR Summary
An R package to create interactive web-maps based on the Leaflet JavaScript library. Display your spatial data on interactive web-maps using the open-source JavaScript library The package provides basic web-mapping functionality to combine vector data files and online map tiles from different sources. Official release on CRAN:
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of leafletR
leafletR Key Features
leafletR Examples and Code Snippets
devtools::install_github("chgrl/leafletR")
library(leafletR)
# load example data (Fiji Earthquakes)
data(quakes)
# store data in GeoJSON file (just a subset here)
q.dat <- toGeoJSON(data=quakes[1:99,], dest=tempdir(), name="quakes")
# make sty
Community Discussions
Trending Discussions on leafletR
QUESTION
A bunch of points are being shown on a map. There are two types of water sources. I want to be able to just show the points associated with one source, or the other or both.
When water resource is chosen to be both, not all points are shown. Why is that? what is wrong with it?
That is all the question and explanation, however, stackoverflow is asking me to explain more and this is mostly code. So, I am just typing stuff in here so that stackoverflow lets me to post the question.
...ANSWER
Answered 2019-Nov-23 at 08:40location is not a column of spatial data table, and layerId = ~ location in addCircleMarkers was messing it up!!!!
QUESTION
I want to plot multiple circles on a map, that have multiple overlaps. I would like to fill the circles using the fillOpacity
argument.
However, i set the fillOpacity
to 0.5 and two circles overlap the fillOpacity
will differ within the intersection. I would like that the fillOpacity
also has "value of 0.5" within the intersection. So that the transparency is homogeneous across the area of both circles.
(A solution within shiny could be also of interest if it would facilitate a solution).
...ANSWER
Answered 2019-Feb-28 at 03:10So setting the g
element style opacity (not fill-opacity) to the desired amount and leaving the markers/circles at 1 fill-opacity seems to work:
QUESTION
I'd like to add a title to the whole map (different from the legend title: addLegend(..., title = "", ...): by "title", I mean an overlaid map component that stays in place while the map is moved (unlike an overlaid image).
Is that an option in RStudio's leaflet for R?
leafletR has a title="" argument but it updates the title of the webpage: it does not add a title to the map.
...ANSWER
Answered 2018-Mar-03 at 11:34You should provide a reproducible example.
But using addControl
you could try:
QUESTION
I am trying to plot the GeoJSON in R using Leaflet package. Below is the code and the error.
...ANSWER
Answered 2017-Aug-14 at 02:04Your data needs to be of "SpatialPolygonsDataFrame" type. When I run your code above, mydata is of type list which produces the error. I used geojson_read from geojsonio package to read the data (specifying the sp: spatialpolygons data type) and I get a leaflet plot. Flatten is not a parameter in geojson_read function but you can look into the parse argument to turn a geojson object in a dataframe if interested.
QUESTION
I'm running into a problem with leaflet for R: When I change the base layer (polygons), the overlay layer gets pushed behind the base layer. From my reading of the leafletR help files, the overlay layers should always have a higher z-index than the base layers, and should stay on top.
Example is here: http://rpubs.com/bvila/overdraw
...ANSWER
Answered 2017-May-27 at 21:11The polygon layers should always have a higher z-index than tile layers. The layers control uses this terminology because the base groups are intended to be base (tile) layers, and the overlay groups are intended to be overlay (polygon) layers.
You can work around this with a bit of JavaScript, see the onRender stage added to the pipe (you only have to do this once for a given map object):
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