thanks again for your time.
Juliane
From: milton ruser [milton.ru...@gmail.com]
Sent: 06 June 2009 23:42
To: Struve, Juliane
Subject: Re: [R-sig-Geo] matching points to a raster
Have you tryed rename the .TXT raster to .ASC and read it using import.asc?
bests
mc
Hi there,
How about join.asc at adehabitat packages?
I have done this kind of points-raster overlap without problem using that
funcion.
Cheers
milton
On Fri, Jun 5, 2009 at 2:49 PM, Kamran Safi wrote:
> Hi,
>
> I am not sure this is trivial. I think the simplest solution would be to
> find th
Hi Juliane,
may I also suggest having a look at the pick.from.ascii.grid function
(and the like) in the RSAGA package. This will use nearest neighbour
interpolation (or, for reasonably small grids, may also use an ad hoc
local kriging interpolation) to pick grid values (from grids with
numeri
Hi,
I am not sure this is trivial. I think the simplest solution would be to
find the closest grid cell centre (maybe using spDistN1 or simple vector
length) and get the closest grid cell with environmental data and assign
it to your animals' position. You can further complicate things by not
Hi Juliane:
I see that you are STILL pushing the outer limits of R - :}
I have been working a lot with combining point/vector and raster files
using the overlay() method in the sp package.
I suspect that if you want to have two spatially registered layers
(raster and point vector) and want to
I am not sure if I undersood your problem. Do you like to get
rastervalues for a point theme? If yes, then
overlay()
might be helpful.
Tobias
Dear list,
I am trying to incoporate spatial information (for example distance) into a
movement model by reading an ascii -b converted raster and matchi
Dear list,
I am trying to incoporate spatial information (for example distance) into a
movement model by reading an ascii -b converted raster and matching the raster
with points of a movement path (for example fishmove$coord[fishmove$day==1].
Below is a section of my code to explain the problem
