Displaying 7 results from an estimated 7 matches for "ncep".
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cep
2004 Sep 14
3
memory allocation error message
Dear all
I use the library(netCDF) to read in NCEP data. The file I want to read has size 113 Mb.
When i try to read it I get the following message:
Error: cannot allocate vector of size 221080 Kb
In addition: Warning message:
Reached total allocation of 255Mb: see help(memory.size)
I get a similar message when I try to read a file with 256 Mb...
2005 Mar 27
0
netcdf
Hi All,
I'm very knew to R. I downloaded and am running it on my redhat so
that I can use the clim.pact package. Everything is downloaded and
installed correctly. When trying to read a netcdf file from the
NCEP/NCAR reanalysis dataset using retrieve.nc I keep getting errors
that the number of dimensions are wrong.
If I use
x.1 <- retrieve.nc("geopothgt.nc")
I get the above error.
this file is a subset created from the NCEP website with only the 500
mb level
I've tried both
force 365.2...
2011 Jul 03
1
Isolines in vector format
Dear R users,
I am working with netcdf data of NCEP/NCAR Climate Reanalysis. R does
have capability to draw isolines using "contour". However, I need not
to draw but to export contours in any vector format. Is it possible?
Thank you.
2006 Nov 20
2
problem with loop to put data into array with missing data for some files
...of a month/year
in a loop that does not exist (and making it's output into an data.out array
would be NA) and moving onto the next year/month in the loop to carry on filling
data.out with real precipitation data.
The situation so far:
I downloaded 50 years worth of GRIB data files from the NCEP data site
http://nomad3.ncep.noaa.gov/pub/reanalysis-1/month/grb2d.gau/
I then created a loop in R to read each month of each of the 50 years worth of
files and only extract the precipitation records using wgrib and grep as show in
the code at the end of this message. I had to use grep to extrac...
2006 Nov 20
3
problem with loop to put data into array with missing data forsome files
...hat does not exist (and making it's output into an data.out
>array
>would be NA) and moving onto the next year/month in the loop to carry
on
>filling
>data.out with real precipitation data.
>
>The situation so far:
>I downloaded 50 years worth of GRIB data files from the NCEP data site
>http://nomad3.ncep.noaa.gov/pub/reanalysis-1/month/grb2d.gau/
>
>I then created a loop in R to read each month of each of the 50 years
>worth of
>files and only extract the precipitation records using wgrib and grep
as
>show in
>the code at the end of this message....
2006 Dec 14
7
loop is going to take 26 hours - needs to be quicker!
Dear R-help,
I have a loop, which is set to take about 26 hours to run at the rate it's going
- this is ridiculous and I really need your help to find a more efficient way of
loading up my array gpcc.array:
#My data is stored in a table format with all the data in one long column
#running though every longitute, for every latitude, for every year. The
#original data is sotred as
2006 Jun 15
2
download.file() yields incomplete files with method="internal"
Dear all,
as the bug # 7991 is flagged not-reproducible, let me give you some pieces
of code, as I have the same or similar problem. The problem always shows up
with the first example (a small text file) and only sometimes (but without
obvious pattern) with the second example, which is a binary file.
> download.file("ftp://ftp.nhc.noaa.gov/pub/atcf/btk/bal012006.dat",