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On Thu, 19 Nov 2009, Pinaud David wrote:
Hi Michael,
Roger is fully right, this function does not preserve the topology, so be
aware of that, some problems can occur...
If you want to use shapefiles::dp() just for raw plotting and visual
simplification, you can try (on the fly):
Hi
To read netcdf data (or any other gridded spatial time data) I find it
convenient to define new classes Spatial3dArray and Spatial4dArray.
setClass(Spatial3dArray,
representation(Spatial, data = array, coords = list,
time = character, btime =
No problems; sp in csv now has this, the next release will have it.
Torleif Markussen Lunde wrote:
Hi
To read netcdf data (or any other gridded spatial time data) I find it
convenient to define new classes Spatial3dArray and Spatial4dArray.
setClass(Spatial3dArray,
Thanks very much for doing the heavy lifting here, Roger.
For use in the Guerry package, I've turned this into a function (rather
than saving other versions of gfrance).
If you include something like this in sp, I'll withdraw it from Guerry.
thinnedSpatialPoly - function(SP, tolerance,
Hello,
Would anyone know a good way to fill in holes within a DTM? There is no data
inside these holes and it is affecting my calculations, so I prefer for an
interpolation of the nearest neighbors to fill in a value or something similar.
Thank you,
Cara
[[alternative HTML version
Hi Ton
Check r.watershed/r.terraflow/r.flow/r.fill modules on Grass.
cheers
miltinho
On Thu, Nov 19, 2009 at 9:16 AM, Tobin Cara cara.to...@epfl.ch wrote:
Hello,
Would anyone know a good way to fill in holes within a DTM? There is no
data inside these holes and it is affecting my
Hi Cara,
There is a very efficient function in SAGA called Close Gaps that does
exactly that. What makes it
especially efficient is that it allows you to set a mask map. See:
rsaga.get.usage(grid_tools, 7)
SAGA CMD 2.0.3
library path: C:/Progra~1/saga_vc/modules
library name: grid_tools
Blair: Have a look at spTransform in rgdal. Robert
On Thu, Nov 19, 2009 at 9:39 AM, Blair Christian
blair.christ...@gmail.com wrote:
Hi All,
Before trying to reinvent the wheel, I was wondering if the mapproj or
any other library had code to take lambert coordinates (along with the
Blair, sorry, too quick:
Have a look at spTransform in rgdal and at projectRaster in the raster package.
Robert
On Thu, Nov 19, 2009 at 9:39 AM, Blair Christian
blair.christ...@gmail.com wrote:
Hi All,
Before trying to reinvent the wheel, I was wondering if the mapproj or
any other library
Hi!
The following works:
doGRASS(r.grow.distance,flags=c(overwrite),parameters=list(distance=dummyd,input=dummy))
[1] r.grow.distance --overwrite distance=dummyd input=dummy
But using o instead of overwrite does not
Those are perfect. I wish I had the time to contribute as much
software as you do, Robert. Very impressive contributions on the
r-forge pages.
Thanks,
Blair
On Thu, Nov 19, 2009 at 12:46 PM, Robert J. Hijmans r.hijm...@gmail.com wrote:
Blair, sorry, too quick:
Have a look at spTransform in
On Thu, 19 Nov 2009, Agustin Lobo wrote:
I'm used to do:
cmd = r.mapcalc 'delme=100'
system(cmd)
and works, but how could I do the equivalent using execGRASS() ?
You cannot. r.mapcalc does not provide an --interface-description XML
self-definition. You have either to use system() as
On Thu, 19 Nov 2009, Agustin Lobo wrote:
Hi!
The following works:
doGRASS(r.grow.distance,flags=c(overwrite),parameters=list(distance=dummyd,input=dummy))
[1] r.grow.distance --overwrite distance=dummyd input=dummy
But using o instead of overwrite does not
Because only overwrite is
Wow, this is great - I was thinking about this just yesterday.
Torleif: do you have an opinion on which NetCDF path is the most
useful for R with sp? RNetCDF or ncdf? GDAL is workable but takes
extra effort to build and then reconstruct 3d/4d from 2d bands. (I use
Windows mostly)
I use the
Hi Mike
At the moment I have written wrapper functions around ncdf. As in get.var.ncdf
you can subset which area to read, and which (continuous) time dimensions you
want to read. At the moment the functions (to correctly return time, lat and
long) are limited to output from the WRF-model
Hi - I was wondering if anyone out there can help with my effort to
create habitat suitability maps using mahasuhab from the adehabitat
package or another package if there is a better option. I would like to
compare the resulting maps with some software a colleague is working on.
When I try
Hi Ned,
Adehabitat was not meant to import all kind of raster maps. It might be
that your file is not in the right format. Are your file with such a header:
ncols 308
nrows 435
xllcorner 40
yllcorner 6515000
cellsize 1000
NODATA_value -
(whatever the values are)
If yes, then it might
Mathieu,
Thanks for the help - rgdal / spixdf2kasc seems to have done the trick.
Here is the header from my ascii grid:
--
ncols900
nrows1650
xllcorner0
yllcorner0
cellsize1000
NODATA_value-
--
All the best,
Ned
Mathieu Basille wrote:
Hi Ned,
Adehabitat was not
Dear R gurus,
I have a function that applies various model prediction functions over a
set of large image files, producing a single output file with the same
spatial extent. Due to memory issues, I'm breaking the input and output
files into tiles. I have this working except for one small
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