hi all,
i want to read a .netcdf file in R. the file contains one variable that has
three dimensions lon, lat and time.
and the data consists of a 192x94 matrix of the variable. whenever i'm
trying to open the file i'm getting the following error msg
"can not allocate vector of size 1.2gb"!
so i gu
Dear all,
I have two SpatialGridDataFrame objects with
different extent:
> str(reser)
Formal class 'SpatialGridDataFrame' [package "sp"] with 6 slots
..@ data :'data.frame': 1826316 obs. of 1 variable:
.. ..$ band1: int [1:1826316] 0 0 0 0 0 0 0 0 0 0 ...
..@ grid
Hi Nick,
SEXTANTE and SAGA are very closely related, many of their modules are
identical. So at least the gain in functionality that can be achieved by
interfacing SEXTANTE would probably be small, but maybe you know more
about this.
A SEXTANTE-R interface would be a bit different from SAGA-R
Hi,
I haven't used the focal function in raster, which should be able to do
this, but in the RSAGA package there is a function called focal.function
that does the same thing on ASCII grids. In your case this should work:
focal.function("dem",fun="max",radius=3,mw.to.vector=TRUE,mw.na.rm=TRUE)
I am seeing RASTER package and "focal". I have a raster ascii grid format
with a Z value. I am trying to do a mobile window with a specific radius
(es: 10 m) to find the pixel with the max value of Z inside the window. I
need to do this operation for each pixel and save a a new grid with only the
I am finding that plotting a SpatialPolygonsDataFrame object
fails when the base graphics packages are ahead of
sp in the search() path. This occurs when I put
require(maptools) [ or require(rgdal), or require(sp) ]
in my .Rprofile file.
In the examples below, the object 'srdf' was create
