Dear Mohgli,
The function crop in the raster package is probably what you are looking
for.
Happy Mapping,
Lionel
Le 24/05/2013 00:55, mohglim...@gmail.com a écrit :
> Dear all
>
> I am plotting a raster dataset derived through a netCDF file and want to
> overlay with a shapfile. Although I spec
Thanks Roger
This didn't quite work
> row.names(polyunion90df) <- "" # one for each row
Error in spChFIDs(SP, x) : lengths differ
But this did,
row.names(polyunion90df) <- as.character(1:nrow(polyunion90df))
I suspect part of the problem was my use of an ID variable for the FID that
includes n
I'm unsure the REML's in gstat and geoR reffer to the same method.
In the former the REML is based on the sample variogram
whereas for the latter the REML is applied to the assumed
(Gaussian) distribution of the data, in a modification of
the original likelihood function.
Paulo Justiniano Ribei
Dear all
I am plotting a raster dataset derived through a netCDF file and want to
overlay with a shapfile. Although I specify the extent of the raster
xmin=-180 to xmax=180 it puts the x values to 0 to 360. When I then do the
overlay with a shapefile the shapefiles are shifted since the has an ext
Dear list,
I am extracting data from thousands of NetCDF files, using the raster
library to read in each file as follows:
nclist <- list.files(nc.dir)
for(iFile in 1:length(nclist)) {
r <- raster(nclist[iFile], varname = "myvar")
# extract data here
} # end loop.
I reach the file handler
Saman, package geoR contains functions for (RE)ML fitting that also fit
the range parameter.
Please note that in your output below the nugget is negative, which
can't be the case -- one could argue that this is a software error.
On 05/23/2013 10:02 PM, Saman Monfared wrote:
> Hi,
> In gstat and
Hi,
In gstat and package the fit.variogram.reml function provided for
RMLE method to estimation of variogram parameters. This function only
estimate nugget and sill and range parameter is fix.
for example:
v.rml<-fit.variogram.reml(rate~1,data,model =vgm(20,"Sph",95241.99,0))
v.rml
model
Apologies for the mis-send above.
To clarify and summarize: there may be 3 steps
You need to define the coordinate system of your UTM data via proj4string:
proj4string(cap.coords.sp) <- CRS("")
The string in CRS defines whaat your GPS used: it might be as minimal
as
"+proj=longlat
Chris--
To clarify and summarize:
You need to define the coordinate system of your UTM data via proj4string:
proj4string(cap.coords.sp) <- CRS("")
On Thu, May 23, 2013 at 12:30 PM, Edzer Pebesma <
edzer.pebe...@uni-muenster.de> wrote:
>
>
> On 05/23/2013 07:08 PM, Chris Waigl wrote:
> >
>
On 05/23/2013 07:08 PM, Chris Waigl wrote:
>
>>
>> Hi Roger- Getting closer to fixing the problem. You were correct with the
>> proj4string differing. The fish capture coordinates are "NA" and the Basins
>> are "+proj=longlat +ellps=WGS84." So now I am trying to convert the points.
>> Here is th
>
> Hi Roger- Getting closer to fixing the problem. You were correct with the
> proj4string differing. The fish capture coordinates are "NA" and the Basins
> are "+proj=longlat +ellps=WGS84." So now I am trying to convert the points.
> Here is the code I input:
>
> cap.coords.sp<-spTransform(cap
Hi Roger- Getting closer to fixing the problem. You were correct with the
proj4string differing. The fish capture coordinates are "NA" and the Basins
are "+proj=longlat +ellps=WGS84." So now I am trying to convert the points.
Here is the code I input:
cap.coords.sp<-spTransform(cap.coords.sp,CRS("
On Thu, 23 May 2013, Zack Holden wrote:
Karen,
you could try converting your polygons to raster using rasterize() in the
raster library, and then use the extract() function to retrieve the cell
values corresponding to your XY locations. I've used this workaround for
similar problems in the past.
Karen,
you could try converting your polygons to raster using rasterize() in the
raster library, and then use the extract() function to retrieve the cell
values corresponding to your XY locations. I've used this workaround for
similar problems in the past.
Zack
On Thu, May 23, 2013 at 9:00 AM,
I am new to mapping with R and having some trouble. Here is what I am trying
to accomplish. I am looking at fish tagging data. I have gps coordinates of
where each fish was tagged and released, and I have a map of 10 coastal
basins of the state of Louisiana. I am trying to determine which basin eac
On Thu, 23 May 2013, cmundy wrote:
Hi All,
Trying to run a well used script over the last few days has shown up an
error when writing a SpatialPolygonDataFrame to SQL SERVER using writeOGR.
This script worked 4 weeks ago, so I assume it is do with updates in the
latest version of rgdal.
This
Hi All,
Trying to run a well used script over the last few days has shown up an
error when writing a SpatialPolygonDataFrame to SQL SERVER using writeOGR.
This script worked 4 weeks ago, so I assume it is do with updates in the
latest version of rgdal.
The write attempt creates a new table in SQL
Ross,
On Thu, May 23, 2013 at 9:39 AM, Ross Ahmed wrote:
> Just an update from me. I've tried following the installation guidelines
> here, but following this, spTrasform is still giving the same error:
> https://sites.google.com/site/eospansite/rspatial_gis/rgdalmac
Actually that page is very
On Thu, 23 May 2013, Ross Ahmed wrote:
Just an update from me. I've tried following the installation guidelines
here, but following this, spTrasform is still giving the same error:
https://sites.google.com/site/eospansite/rspatial_gis/rgdalmac
As Agus notes at the head of the page (he wrote i
Just an update from me. I've tried following the installation guidelines here,
but following this, spTrasform is still giving the same error:
https://sites.google.com/site/eospansite/rspatial_gis/rgdalmac
In addition, I've posted on r-sig-mac for help on how to solve the problem, but
have not h
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