similar to: netcdf

Displaying 20 results from an estimated 400 matches similar to: "netcdf"

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
Dear R-help community, My main goal of this message is to find a way of skipping a file 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
2006 Nov 20
3
problem with loop to put data into array with missing data forsome files
Hi Jenny If you want a general solution I understand. However I just downloaded the file fine (as far as I can tell) so you are welcome to have a copy. I can email it to you if you want. I do not think your test for NA is valid. i.e if(test != "NA"){ } I think you should use if(is.na(test)){ } Or something similar. J --- John Seers Institute of Food Research Norwich
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 in a PC with 2 GigaByte RAM. Is there something
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
2024 Jun 24
3
Converting .grib to excel file
Dear all; I have downloaded meteorology data from " https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=form" as .grib format. It has hourly data of a complete year (every hour of every day of 12 months) and has 6 meteorology parameters. The file has been attached. I am trying to convert it to an excel file that puts every parameter in a separated column.
2002 Nov 04
0
uncertainty principle is untenable !!!
please reply to hdgbyi@public.guangzhou.gd.cn or bgpgong@hotmail.com, thank you. UNCERTAINTY PRINCIPLE IS UNTENABLE By reanalysing the experiment of Heisenberg Gamma-Ray Microscope and one of ideal experiment from which uncertainty principle is derived , it is found that actually uncertainty principle can not be obtained from these two ideal experiments . And it is found that
2002 Oct 16
0
uncertainty principle is untenable !!! (new)
please reply to hdgbyi@public.guangzhou.gd.cn or bcpgong@hotmail.com, thank you. UNCERTAINTY PRINCIPLE IS UNTENABLE By reanalysing the experiment of Heisenberg Gamma-Ray Microscope and one of ideal experiment from which uncertainty principle is derived , it is found that actually uncertainty principle can not be obtained from these two ideal experiments . And it is found that
2024 Jun 25
2
Converting .grib to excel file
Richard, Many thanks for your email. I had attached the grib file to the original email to R help team but it seems you did not receive it. Unfortunately, I do not know how to reduce the volume or extract some of the grib file data to send it for you. The file has the volume of 6 Megabyte. I can send it by email. The file has 6 met parameters and Date (day/month/year hour:minute). I want the
2009 Apr 11
2
who happenly read these two paper Mohsen Pourahmadi (biometrika1999, 2000)
http://biomet.oxfordjournals.org/cgi/reprint/86/3/677 biometrika1999 http://biomet.oxfordjournals.org/cgi/reprint/94/4/1006 biometrika2000 Hi All: I just want to try some luck. I am currenly working on my project,one part of my project is to reanalysis the kenward cattle data by using the method in Mohsen's paper,but I found I really can get the same or close output as he did,so,any
2008 Mar 17
1
Std errors in glm models w/ and w/o intercept
I am doing a reanalysis of results that have previously been published. My hope was to demonstrate the value of adoption of more modern regression methods in preference to the traditional approach of univariate stratification. I have encountered a puzzle regarding differences between I thought would be two equivalent analyses. Using a single factor, I compare poisson models with and without
2024 Jun 26
1
Converting .grib to excel file
I'm now inclined to go with 'search for "convert GRIB to CSV". https://confluence.ecmwf.int/display/CKB/How+to+convert+GRIB+to+CSV is the first line. I know that's not an R solution, but using software specifically developed for encoding, decoding, extracting, &c GRIB file by the European Centre for Medium-Range Weather Forecasts and actively maintained, with an example
2024 Jun 25
1
Converting .grib to excel file
Dear Bert and Sara; I have searched on the internet and found some way to do this like python. But python is so complicated to me as it needs many steps to be done for reading and converting it. I will try terra package to convert it. On Tue, 25 Jun 2024, 15:15 javad bayat, <j.bayat194 at gmail.com> wrote: > Richard, > Many thanks for your email. > I had attached the grib file to
2002 Dec 09
2
netcdf
Hello, I have been having difficulties opening netcdf files using the netcdf library. I am able to successfully open the file and I can determine the names and size. However, when I try to read it I receive an error. Reading the documentation, I am wondering if this might be due to a difference between netcdf version 2 and more recent netcdf format? I've tried using different values for the
2024 Jun 26
1
Converting .grib to excel file
Whoops, sorry, you *did* answer "what went wrong". > param_names <- c("param1", "param2", "param3", "param4", "param5", "param6") > extracted_data <- extract(raster_data, param_names, df = TRUE) #Error in (function (classes, fdef, mtable) : #unable to find an inherited method for function ?extract? for signature
2007 Dec 20
0
package clim.pact
I would like to try the SSA approach with my data. If i am not mistaken there is a package named "clim.pact" in the R repository that does that. I tried to download on my Linux box and it failed as it cannot resolve a dependency that is only needed for Windows platform (that is written in the site http://cged.genes.nig.ac.jp/RGM2/pkg.php?p=clim.pact). I wonder if someone knows the
2011 Jan 26
2
applying a set of rules to each row
All, I would like to apply a set of rules to each row of the sample data set below. The rule sets are the guidelines for determining an individual's date for retirement eligibility. The rules are found in this document, http://www.opm.gov/feddata/RetirementPaperFinal_v4.pdf. I am only interested in the top two categories for retirement eligibility, the CSRS and FERS plans. The data set has
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) ;
2008 Mar 20
3
Problem with diff(strptime(...
Hi all, I have been chipping away at a problem I encountered in calculating rates per year from a moderately large data file (46412 rows). When I ran the following command, I got obviously wrong output: interval<- c(NA,as.numeric(diff( strptime(mkdf$MEAS_DATE,"%d/%m/%Y")))/365.25) The values in MEAS_DATE looked like this: mkdf$MEAS_DATE[1:10] [1] 1/5/1962 1/5/1963
1999 Nov 22
2
netCDF and/or HDF4/5 interfaces for R?
Hi, I was wondering whether there are interfaces to netCDF, HDF4, or HDF5 for "R". Thanks, Thomas. tmb-r-project at lumo.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the