[R-sig-Geo] Creating a spatial boundary using Lines() and SpatialLines()

[Struve,Juliane]

Dear Roger,

Thank you for this helpful comment. The spatial boundary now works. However, when I submit it to KernelUD() using 
kernelUD(Movement_Spatial,h="href",grid=Raster_map,boundary=coastline)
I get an error message
"Error in 3 * h : non-numeric argument to binary operator"
The boundary is simple and far away from the locations used for the Kernel estimation. The smoothing parameter href is 5.5 and the boundary seems to satisfy the conditions  required to use it in KernelUD(). What does this message refer to ? 

Thank you again for your time,

Juliane 



Dr. Juliane Struve
Fisheries and Aquatic Sciences
7922 NW 71st Street, Gainesville, FL 32653
352-273-3632 (tel)
352-392-3672 (fax)
email: jstruve at ufl.edu



-----Original Message-----
From: Roger Bivand [mailto:Roger.Bivand at nhh.no] 
Sent: Friday, March 23, 2012 1:50 PM
To: Struve,Juliane
Cc: r-sig-geo at r-project.org
Subject: Re: [R-sig-Geo] Creating a spatial boundary using Lines() and SpatialLines()

On Fri, 23 Mar 2012, Struve,Juliane wrote:

> Dear list,
>
> I would like to create a spatial line to be used as a boundary in 
> KernelUD(). But my code yields an error message.
>
> bound <- cbind(c(-40,-40,-30,-30,-20,0,20,30,50,100),c(-40,-20,-10,0,10,20,30,30,50,50))
> Slo1 <- Line(bound)
> Sli1 <- Lines(list(Slo1, ID="coastline"))

Sli1 <- Lines(list(Slo1), ID="coastline")

> coastline <- SpatialLines(list(Sli1),ID="coastline")

coastline <- SpatialLines(list(Sli1))
class(coastline)

OK?

Roger

> Sli1
> An object of class "Lines"...
>
> Error in Lines(list(Slo1, ID = "coastline")) : slinelist not a list of Line objects
>
> Would someone be able tell me why this does not work ?
>
> Thanks a lot for your time,
>
> Juliane
>
>
>
>
>
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>
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-- 
Roger Bivand
Department of Economics, NHH Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no