similar to: Rapid Random Access

If a move toward machine-independent representation seems reasonable, it may be worth looking at some of the binary data exchange formats used by nasa and others, CDF http://nssdc.gsfc.nasa.gov/cdf/cdf_home.html netCDF http://www.unidata.ucar.edu/packages/netcdf/index.html HDF http://hdf.ncsa.uiuc.edu/ There may also be something useful in the "Scientific Data Format Information

hello, I have a problem to open an hdf file. i have downloaded the package 'hdf5' as it was advised on R seek. But when i try to load the file, the R console sends me an eror message: setwd("C:/Documents and Settings/Karine/Bureau/data/") #install.packages('hdf5') library("hdf5") sea_ice <- hdf5load("asi-s6250-20090704-v5i.hdf", load =

Saludos, estoy intentando usar la función reprojectHDF() ( http://r-gis.net/?q=ModisDownload). #### source('ModisDownload.R') library(raster) library(RCurl) path<-"~/R/MODIS/Data/Test" input<-list.files(path,"*.hdf",all.files=T,recursive=T,full.names=T) input outname<-paste(substr(input[1],40,45),".tif",sep='') outname

Dear R users, I am analysing a very large data set and I need to perform several data manipulations. The dataset is so big that the only way I can play with it without having memory problems (E.g. "cannot allocate vectors of size...") is to write a batch script to: 1. cut the data into pieces 2. save the pieces in seperate .RData files 3. Remove everything from the environment 4. load

Dear R Users, How do we read netcdf / hdf format files in R ? Also, can we convert netcdf to hdf format in R? Great Thanks, Best Regards, Yogesh [[alternative HTML version deleted]]

Hi, I've been playing with R for only a few days, so I'm not terribly familiar with it yet. Has anyone ever done any work using HDF or NetCDF files with R? Both file formats have libraries which can be linked to a program to read and write data to these formats. Is this sort of thing possible with R? We are planning to use the HDF format to store experimental data collected by some

Hi folks, OS - Ubuntu 10.04 On R I create a datafile named "data". I can evoke it on R with; > data On R Commander Data -> Active data set -> Select active data set -> (data) OK only one data set there "data" -> View data set I can read it -> Edit data set showing 25 rows of data. Clicking the box shows a thick border around it. But I couldn't

The question puzzled me at first, because of your use of "library". It looks as if the hdf5 r "package" utilises the "windows hdf5 library" binary. My reading is that you will have to compile the package yourself after you have downloaded the hdf windows dll from hdf.ncsa.uiuc.edu The instructions are in win.readme.txt of the package source which you can download at

How do people go about synchronizing multiple workspaces on different workstations? I tend to wind up with projects spread around the various machines I work on. I find that placing the directories on a server and reading them remotely tends to slow things down. thanks, Eric -- Eric Turkheimer, PhD Department of Psychology University of Virginia PO Box 400400 Charlottesville, VA 22904-4400

Has anyone succeeded in using HDF5 in R? Using Solaris R version 0.64.0: 1) R was configured in this way: cd /home/westley/R/R-0.64.0 setenv LD_LIBRARY_PATH ${LD_LIBRARY_PATH}:/home/westley/HDF/lib ./configure \ --prefix=/home/westley/R \ --with-g77=/usr/calspan/gnu/bin/g77 \ --x-lib=/usr/openwin/lib \ --with-hdf5-libs=/home/westley/HDF/lib 2) But, when I attempt to

Hi All, I'm still actively researching this problem (reading R-ext manual), but I hoped that I might be able to get some additional insight from the list given that I'm fairly new at writing R extension code. Problem: I have some fairly simple code (.Call interface) that makes a call to another shared library, which, in turn, calls routines in an HDF5 shared library. The good news

Sorry if that's a vague subject, but this problem is a little weird and I'm just wondering if there are any suggestions out there. We've got a Samba server (3.0.23) running on a CentOS 5.3 server offering up a data share of 7TB on an XFS filesystem. The authentication all happens through a Samba PDC with an LDAP backend all on a different server. The system in question is just a

Scenario: Here I am working away in R. I've got results that prove global warming is anthropogenic and also the solution for producing limitless carbon-neutral energy from nuclear fusion. Its been a good day. So, I want to save my work. I don't want to overwrite my current .RData, so I save it to another file: save(file="prize.RData") # just need to email this to the Nobel

Hi all -- I am working on 64-bit Windows XP. I'm not a very technical person when it comes to the command line stuff, so please forgive me if this is a stupid question. I have a bunch of HDF files, and I want to dump a single PM25 data layer from each file to .txt by invoking ncdump.exe from system(). Here's a sample command string: "C:/ncdump -v PM25 C:/01aug2010.hdf >

how can I import/export data from ms excel? also is there a way to import/export data of the hdf format? is there a way to import/export hdf format for ms excel as well? thank you very much in advance. /js ###################################################################### This e-mail message has been scanned and cleared by MailMarshal http://www.marshalsoftware.com

Dear All, I have data in HDF file format and would like to read it into R. I have tried the package hdf5 without success. Any ideas and suggestions?? Kind regards, Katrin -- Katrin Fleischer Vrije Universiteit Amsterdam Faculty of Earth and Life Sciences Subdepartment Hydrolgy and Geo-Environmental Sciences Room E-360 De Boelelaan 1085 1081 HV AMSTERDAM Tel: +31 20 59 87391

When I quit R, it says: > q() Save workspace image? [y/n/c]: and since I've probably got 3 R sessions running in however many different directories and I might have jumped around with setwd() , I forget exactly where R wants to save its workspace image. So could q() be changed to say what file it is going to save to before it does? Currently I have to hit 'c', then do

Hi all, I'm testing the use of the hdf5 R library under Windows XP. With some simple example (an R list with several subobjects as showed in the examples in the library) the library exports and imports .hdf files adequately. However, if I try to open the exported file with another program (HDFView 2.5) I receive the message that the file is an unsupported format. HDFView 2.5 does not seems to

I work with problems that have rather large data requirements -- typically a bunch of multigig arrays. Given how generous R is with using memory, the only way for me to work with R has been to use bigmatrices from bigmemory package. One thing that is missing a bit is interoperability of bigmatrices with C++ and possibly java. What i mean by that is API that would allow read and write filebacked

I'm often wanting to develop functions whilst manipulating data. But I don't want to end up with a .RData full of functions and data. It might be that I have functions that are re-usable but not worth sticking in a package. So I've tried to come up with a paradigm for function development that more closely follows the way Matlab and Python do it (partly inspired by a confused Matlab