[R-sig-Geo] mapView: basic interactive viewing of spatial data in R

Tim Appelhans tim.appelhans at gmail.com
Fri Jul 24 18:16:58 CEST 2015

in RStudio there is a little button on top of the viewer that will open 
the current content in the default browser. I do not know how to tell 
RStudio to use the browser by default.


On 24.07.2015 16:37, Bernd Vogelgesang wrote:
> Hi Tim,
> you mentioned that it is also possible to view the map in the default 
> web browser.
> So far I could not find out by myself how to accomplish this from 
> RStudio.
> Thank you
> Bernd
> Am 24.07.2015, 11:39 Uhr, schrieb Tim Appelhans 
> <tim.appelhans at gmail.com>:
>> Dear list members,
>> I would like to draw your attention to a little 'project' I've been
>> working on over the past few weeks.
>> Using leaflet for R, I have defined some methods for spatial data (e.g.
>> Raster*, Spatial* objects) to quickly visualise them in either the
>> RStudio Viewer pan or the default web browser. The function I created
>> for this is called mapView().
>> Think of it as an interactive version of spplot()/plot() for spatial
>> data (though less versatile). It enables zooming, paning and basic layer
>> queries (i.e. printing of the attributes in the @data slot of Spatial*
>> objects + the x/y location of the feature). For Raster* objects queries
>> are currently not available as leaflet translates the data into RGB
>> values for display. Furthermore, background maps can be defined and
>> multiple different spatial object layers can be overlaid.
>> At the moment mapView() lives in our Rsenal package on github
>> (https://github.com/environmentalinformatics-marburg/Rsenal) but this is
>> likely going to change at some point in the not too distant future. This
>> also depends on whether there is active interest in developping this
>> sort of thing further to provide more than the current admittedly rather
>> limited functionality. This, however, would involve JavaScript coding
>> which I do not have any experience with.
>> A quick (non-interactive) intorduction can be found here:
>> https://metvurst.wordpress.com/
>> The full introductory article including interactive examples is
>> published here:
>> http://environmentalinformatics-marburg.github.io/web-presentations/20150723_mapView.html 
>> I hope this may prove useful for some of you.
>> Also, if anyone is keen to get involved in taking this further, please
>> let me know and we will see how to best proceed.
>> Best,
>> Tim

Tim Appelhans
Department of Geography
Environmental Informatics
Philipps Universität Marburg
Deutschhausstraße 12
35032 Marburg (Paketpost: 35037 Marburg)

Tel +49 (0) 6421 28-25957


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