Displaying 20 results from an estimated 1000 matches similar to: "i can't read large NETCDF file like CRU"
2012 Jan 05
1
[ncdf] programmatically copying a netCDF file
How to programmatically (i.e., without no or minimal handcoding) copy
a netCDF file? (Without calling
> system("cp whatever wherever")
:-) Why I ask:
I need to "do surgery" on a large netCDF file (technically an I/O API
file which uses netCDF). My group believes a data-assimilation error
caused a data variable to be corrupted in a certain way, so I'm going
to
2008 Jul 09
1
netCDF to TIFF
Greetings R users!
I am working with the ENSEMBLE climate data (10 min resolution daily
temperatures images for all of Europe 1950-2006). The data comes
packaged in a single netCDF file. I would like to read the data in and
export a subset (2002-2006) as geotiffs (one image per day). So far, I
can successfully read in the data and view the images within an R
display window. However, I have yet to
2011 May 06
1
read a netcdf file _Fill_value=-32768
Hello
I am a new user of R .
and I ve problem with R and netcdf .
I succed installation , I could use all examples .
But when I take my netcf it is different .
I want to do statistic on this kind of file .
1)
first calculate mean .
my data is like that
through ncdump -h test.nc
netcdf test {
dimensions:
lat = 301 ;
lon = 401 ;
time = UNLIMITED ; // (80 currently)
2012 Apr 02
2
how to read netcdf file in R
Dear R Users,
I am using R 2.14.1 on windows
How to read netcdf files in R ?
Which packeges do we need to install for this,
and what commands are used for reading netcdf files.
Thanks,
Best Regards,
Yogesh Tiwari
--
Yogesh K. Tiwari (Dr.rer.nat),
Scientist,
Centre for Climate Change Research,
Indian Institute of Tropical Meteorology,
Homi Bhabha Road,
Pashan,
Pune-411008
INDIA
Phone:
2009 Nov 20
1
problem selecting 330 to 30 longitude
Hello,
This is probably very simple but I am trying to select a region from the
OIv2 SST dataset that crosses 0 longitude. The longitude variable is
arranged from 0 to 360 and I get an error message when trying to go from 330
to 30 for example. The data are from a NOAA netCDF file.
*temp = open.ncdf("c:/documents and settings/theoni/desktop/sstoi_v2.nc")
print(temp)
y1 = get.var.ncdf(
2011 Apr 01
1
filled contour plot with contour lines
I'm stumped, can anyone find my error in this sequence.
for(j in 1:(varsize[4]-1))
temp <- get.var.ncdf(nc=input,
varid="p_foraging",c(1,1,j),c(varsize[1],varsize[2],1))
filled.contour(x, y, temp, color = terrain.colors,
plot.title = title(main = paste("Everglades Wood Stork
Foraging Potential \nYear", (2000+j)),
xlab =
2010 Oct 27
1
"non-numeric argument to binary operator" error while reading ncdf file
Hi everyone,
I am a newbie in R and in this discussion list. I am trying to use R package
"ncdf" to read values of temperature from a NCDF file. I did it before to
another file using the function "get.var.ncdf", but now there is an error
that I can not solve, and I would really appreciate if you could help me.
I am using R version 2.11.1 (2010-05-31) in a machine with Linux
2011 Nov 29
1
Problems with Raster and clim.pact packages with large netcdf files (2.7G) in x64 bit R
I normally use the raster or clim.pact pckages to read netcdf (.nc) files.
This has always worked out for me until this weekend every time i try to
read a .nc file i get the following error
Program: C:\Program Files\RStudio\bin\x64\rsession.exe File: posixio.c,
Line 417 Expression: offset >= 0 This application has requested the Runtime
to terminate it in an unusual way.Please contact the
2011 Sep 07
3
Editing the variables attributes section in the netCDF header of netCDF files created using the package ncdf.
Hi,
I am using the package ncdf to create netCDF files and I want to mimic the the header of an exiting netCDF file created outside of R. Below is what the existing header looks like (part of it that is different):
netcdf ccd1984_05_08 {
dimensions:
lat = 1974 ;
lon = 1894 ;
time = UNLIMITED ; // (1 currently)
variables:
int time(time) ;
2010 Sep 07
1
adding variable to netCDF file
I would like to open an existing netCDF file and add a variable to it.
I am using the ncdf package. This test code gives the idea of what I am
trying to do:
library(ncdf)
print('here we go')
print('first, construct netCDF file')
t<-dim.def.ncdf('t','',1:1,unlim=T,create_dimvar=F)
print('defining first vars')
2010 Sep 23
1
NetCDF file: adding a variable
I am trying to create a NetCDF file with bathymetry (a matrix) and then to
add a grid type (an integer) as variables.
This is the relevant part of the code:
library(ncdf)
wfile="my_file.nc"
msv=-10
grdtp=2
# Dimensions
d1=dim.def.ncdf("lon","degrees",as.double(lon))
d2=dim.def.ncdf("lat","degrees",as.double(lat))
# Variables
2009 Nov 10
3
NetCDF output in R
Dear CSAG R users,
I will be glad if someone can point out what I am doing wrong or not doing at all in this.
I am trying to write out netcdf file in R. I have 26 time step but only the first time step is written.
For example:
>library(ncdf)
>path <- '/home/work/'
>forecast <- open.ncdf(paste(path,'cam.1980.2005.nc',sep=""))
> fore <-
2009 Nov 10
3
NetCDF output in R
Dear CSAG R users,
I will be glad if someone can point out what I am doing wrong or not doing at all in this.
I am trying to write out netcdf file in R. I have 26 time step but only the first time step is written.
For example:
>library(ncdf)
>path <- '/home/work/'
>forecast <- open.ncdf(paste(path,'cam.1980.2005.nc',sep=""))
> fore <-
2011 Jul 11
3
NetCDF, open *.nc
*Good day!*
I'm using Vista(x64) and R 2.13.0(x64) (with ncdf and RnetCDF packs)
*I have a problem:* I'm trying to open **.nc* file and I use this script
(http://r.789695.n4.nabble.com/Problem-downloading-and-opening-netcdf-file-td3046897.html#a3046965)
library(ncdf)
link <-
"http://ibis.grdl.noaa.gov/SAT/SeaLevelRise/slr/slr_sla_gbl_free_all_66.nc"
dest <-
2010 Nov 17
1
Problem downloading and opening netcdf file
I am trying to download and open an on-line netcdf file.
I'm using Windows XP and R 2.11.1
Here's my script
library(ncdf)
link <-
"http://ibis.grdl.noaa.gov/SAT/SeaLevelRise/slr/slr_sla_gbl_free_all_66.nc"
dest <- "C:/temp/slr_sla_gbl_free_all_66.nc"
download.file(url=link,destfile=dest)
nc1 <- open.ncdf(dest)
The file appears in my C:/temp
2008 Sep 18
2
graphing netCDF files
Hello
I'm working with a large hydrological data set stored in a netCDF format.
The file stores x and y coordinates in the UTM projected coordinate system,
yet when I use image to graphically display the z variable, the image is
distorted in the sense that it does not plot the map in the correct spatial
organization.
I'm wondering if I need to define the projection of the netCDF file
2013 Mar 07
1
install error - Netcdf library (linux)
Hi All,
i'm on a debian linux 64bit,
i'm tying to install the netcdf intraface, i tried both ncdf and ncdf4
but trying to build i received the error :
(i have necdf installed on my machine and it is able to fiund it .. no missed .h)
epy at epinux:~$ sudo R CMD INSTALL --configure-args="-with-netcdf_incdir=/usr/include -with-netcdf_libdir=/usr/lib" ncdf4_1.8.tar.gz
*
2009 Jan 19
1
gz netCDF files
Hello,
I am trying to access several netCDF files that are also zipped (via
gzip I guess) (and stored in a directory that I only have reading
permit)
I tried to unzip them using gzfile, gzcon, etc, and then open them
with open.ncdf (from ncdf package). Everything was unsuccesful.
I had no problem using the ncdf package with "normal" netCDF files
I would really appreciate any
2013 Jan 29
2
Netcdf and Raster Package Questions, Need .asc File for GIS
Hello R-Group,
I am new working with netcdf files and the raster package in R.I am
trying to read in a netcdf file using the package "ncdf".I am able to
get the lat, lon and parameter I need and can plot using
fill.contour.Ultimately, I am trying to create a .asc file to reafd into
GIS.I am using the package "raster" to read the parameter.When I read in
with
2008 Dec 23
1
NetCDF within R: installation assistance
Greetings. I am attempting to add NetCDF libraries within R, and have
failed. We have R version 2.8, and are running on a 64-bit Redhat Linux
2.6.18 kernel:
Red Hat Enterprise Linux Client release 5.2 (Tikanga)
Linux halfmoon.ncdc.noaa.gov 2.6.18-92.1.22.el5 #1 SMP Fri Dec 5
09:28:22 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
I have run the installation instructions found at