[R-sig-Geo] stplot - legend/classes of categorical vairable

[Aurelie C.Godin]

I'm not sure what you had expected: do you want them to decrease, in
value, from top to bottom? sp::spplot does it the same way stplot does now.
In the key with factor c("a", "b", "c”), “a" appears at the bottom, followed by “b" and “c” (bottom to top), but when these are changed for c('0','(0,5]','(5,25]') , then their order in the key are different e.g., “a" = “0” is appearing at the top rather than the bottom and the key is not in order i.e., now from bottom to top: (0,5], (5,25] , 0.

I’m not sure what you mean by :
sp::spplot does it the same way stplot does now.

On May 6, 2015, at 1:27 PM, edzer [via R-sig-geo] <ml-node+s2731867n7588201h68 at n2.nabble.com<mailto:ml-node+s2731867n7588201h68 at n2.nabble.com>> wrote:



On 05/06/2015 04:35 PM, Aurelie C.Godin wrote:

> I'm getting strange behavior in the bar legend with factors ...
> I cut my data into intervals and plotted results using stplot, however now
> the levels are not appearing in the same order as levels(factor)...?
>
> For example, I get the same problem here:
> library(spacetime)
> example(STFDF)
> set.seed(42)
> gridded(stfdf at sp) = TRUE
> stfdf$f = factor(sample(c("a", "b", "c"), 12, replace = TRUE))
> levels(stfdf$f)
> levels(stfdf$f)<-c('0','(0,5]','(5,25]')
> levels(stfdf$f)
> library(RColorBrewer)
> stplot(stfdf[,,"f"], col.regions = brewer.pal(3, "Accent"))
>
> Thoughts on how to fix this?
I'm not sure what you had expected: do you want them to decrease, in
value, from top to bottom? sp::spplot does it the same way stplot does now.

>
>
>
> -----
> Aurelie Cosandey-Godin
> Ph.D. Student, Department of Biology, Dalhousie University
> Industrial Graduate Fellow, WWF-Canada
> Email: [hidden email]<x-msg://2/user/SendEmail.jtp?type=node&node=7588201&i=0> | Web: wormlab.biology.dal.ca<http://wormlab.biology.dal.ca>
>
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--
Edzer Pebesma
Institute for Geoinformatics (ifgi),  University of Münster,
Heisenbergstraße 2, 48149 Münster, Germany; +49 251 83 33081
Journal of Statistical Software:   http://www.jstatsoft.org/
Computers & Geosciences:   http://elsevier.com/locate/cageo/
Spatial Statistics Society http://www.spatialstatistics.info<http://www.spatialstatistics.info/>


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Aurelie Cosandey-Godin, PhD
Dalhousie University, Department of Biology
godina at dal.ca<mailto:godina at dal.ca> | m: +1 902 499-0984





-----
Aurelie Cosandey-Godin, Ph.D.
Postdoctoral Research Fellow, Department of Biology, Dalhousie University
godina at dal.ca | wormlab.biology.dal.ca

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