[R-sig-Geo] rasterVis::streamplot with colorkey

[chris english]

Ben,

Not so much hard wired (colorkey) but coming in a couple of times so which
to use? As kind of explained here:
http://stackoverflow.com/questions/34320868/map-with-panel-plots,

and further, more directly on rasterVis from Augustin Lobo:
http://rpubs.com/alobo/rasterVis_Intro1

which looks like it will get you to the results you want, though I haven't
worked it through your example.
HTH,
Chris



On Wed, Dec 21, 2016 at 11:14 AM, Ben Tupper <btupper at bigelow.org> wrote:

> Hello,
>
> We have wind data that we would like to draw with rasterVis::streamplot().
> We would like to include a colorkey to associate with the region but it
> seems that deep down rasterVis::streamplot has hardwired `colorkey =
> FALSE`  I'm not sure how to circumvent this to allow for a color key. So,
> in brief...
>
> How do I draw a streamplot with a colorkey?
>
> Below is my example and sessionInfo() output.
>
> Thanks so much,
> Ben
>
> ### begin example
> library(raster)
> library(rasterVis)
> library(RColorBrewer)
>
> V = volcano/10
> V = V - mean(V)
> U = V[nrow(V):1,]
>
> V = raster::raster(V)
> U = raster::raster(U)
> S = raster::stack(U,V)
>
> rasterVis::streamplot(S,
>     isField = 'dXY',
>     par.settings = rasterVis::streamTheme(
>         region = rev(RColorBrewer::brewer.pal(n=4, name= 'Greys')),
>         symbol = hexbin::BTC(n=9,beg=20)),
>     droplet = list(pc = 1),
>     scales = list(draw = TRUE),
>     colorkey = TRUE)
>
> # Error in .local(x, data, ...) :
> #  formal argument "colorkey" matched by multiple actual arguments
>
> ### end example
>
>
> > sessionInfo()
> R version 3.3.1 (2016-06-21)
> Platform: x86_64-apple-darwin13.4.0 (64-bit)
> Running under: OS X 10.11.6 (El Capitan)
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] rasterVis_0.40      latticeExtra_0.6-28 RColorBrewer_1.1-2
> lattice_0.20-33     raster_2.5-8        sp_1.2-3
>
> loaded via a namespace (and not attached):
> [1] zoo_1.7-13        parallel_3.3.1    hexbin_1.27.1     Rcpp_0.12.6
>  grid_3.3.1        viridisLite_0.1.3
>
>
>
>
>
> Ben Tupper
> Bigelow Laboratory for Ocean Sciences
> 60 Bigelow Drive, P.O. Box 380
> East Boothbay, Maine 04544
> http://www.bigelow.org
>
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>

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