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

[Tim Appelhans]

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

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

Tel +49 (0) 6421 28-25957

http://environmentalinformatics-marburg.de/


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