[R-sig-Geo] mapview 0.5.0

[Ben Tupper]

Sweet!  Thanks for sharing! 


On Sep 13, 2015, at 6:42 AM, Tim Appelhans <tim.appelhans at gmail.com> wrote:

> Dear all,
> 
> I have put some more effort into mapview.
> The current version 0.5.0 has some new features which make the whole experience much more user-friendly.
> 
> In a nutshell, changes/additions are as follows:
> 
> - mapView() is now also defined for SpatialPixelsDataFrame
> - all Spatial * DataFrame methods have gained argument 'zcol' to select specific columns from the attribute table
> - SpatialPointsDataFrame method has gained argument 'radius' to scale the circles according to another variable
> - added viewRGB() to render true-/false-color images of RatserStacks/Bricks (like raster::plotRGB)
> - added viewExtent() to view the extent/bbox of Raster*/Spatial* objects. This is useful for large objects as only the four corners of the extent need to be reprojected (using raster::projectExtent)
> - defined '+'-method to easily add layers to a leaflet/mapview map or combine existing maps
> - defined class 'mapview' which has two slots
>  - @object - a list with all objects that are shown on the map
>  - @map - the map
> - Raster* methods have gained argument 'maxpixels' to avoid long rendering times (by default set to 500000 pixels which produces acceptable times on my machine)
> - enhanced leaflet integration so that you can use leaflet maps and add features using mapview (e.g. '+') or use mapview to create maps and add functionality provided by leaflet (using e.g. %>%)
> 
> As an example, this means that you can now do things like
> 
> mapView(meuse.grid, zcol = "soil") + viewExtent(meuse) + meuse
> 
> to view all points of meuse plus their extent on top of a raster layer of meuse.grid$soil
> 
> All new functionality is highlighted in detail in the demo at
> 
> http://environmentalinformatics-marburg.github.io/web-presentations/20150723_mapView.html
> (the .Rmd source of which is now also included as a vignette in the package)
> 
> The package repository can be found at https://github.com/environmentalinformatics-marburg/mapview
> 
> To install the package use
> 
> library(devtools)
> install_github("environmentalinformatics-marburg/mapview")
> 
> I hope this update will prove useful for some of you.
> Don't hesitate to send me feedback and/or suggestions.
> 
> Formal bug reports and feature requests should be filed at
> https://github.com/environmentalinformatics-marburg/mapview/issues
> 
> Best
> Tim
> 
> -- 
> #####################################
> 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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Ben Tupper
Bigelow Laboratory for Ocean Sciences
60 Bigelow Drive, P.O. Box 380
East Boothbay, Maine 04544
http://www.bigelow.org