[R-sig-Geo] placing spdf back into adehabiatHR estUDm

[Elizabeth Hartel]

Hi Phil,

You should be able to use the following to covert it into a
SpatialPixelsDataFrame:

> hab <- as(hab, "SpatialPixelsDataFrame")

Good luck!
Liz



Phil H wrote
> Hi,
> 
> This looks to be exactly the solution i am looking for- I am analysing
> some telemetry data in a reservoir which is too complex to meet the
> boundary rules.
>  However I am having a little trouble with the example code....its
> probably something I have done but.....
> 
> 
> library(adehabitatHR)
> data(puechabonsp)
> loc <- puechabonsp$relocs
> elev <- puechabonsp$map
> fullgrid(elev) <- TRUE
> hab <- elev
> hab[[1]] <- as.numeric(!is.na(hab[[1]]))
> 
> #everything works good up till here
> ud <- kernelUD(loc[,1], grid=hab)
> 
> #when i get to this point I get the following error message
> 
> error in .kernelUDs(SpatialPoints(x, proj4string =
> CRS(as.character(pfs1))),  : 
>   grid should be a number or an object inheriting the class SpatialPixels
> 
> #i notice that when I run 
> 
>> class(hab)
> [1] "SpatialGridDataFrame"
> attr(,"package")
> [1] "sp"
> 
> 
> #it appears to be a class SpatialGridDataFrame. and the grid function
> needs to be of the class SpatialPixels
> 
> #so I tried
> 
> hab<-SpatialPixels(hab)
> 
> however this doesnt seem to work i get the error
> 
>> hab2<-SpatialPixels(hab)
> Error in SpatialPixels(hab) : 
>   points should be of class or extending SpatialPoints
> 
> I am a bit of a beginner using sp and adehabitathr packages so i expect it
> is something silly
> however I just cant seem to recetify this
> 
> Thanks for your time
> Phil H





--
View this message in context: http://r-sig-geo.2731867.n2.nabble.com/Walruses-and-adehabitatHR-class-estUDm-exclusion-of-non-habitat-pixels-and-summary-over-all-animals-tp6497315p7582460.html
Sent from the R-sig-geo mailing list archive at Nabble.com.