Displaying 7 results from an estimated 7 matches for "schuurman".
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schuurmans
2004 Jul 16
1
median filter
Dear R users,
Does anyone know if there's a median filter available in R?
I have a considerable amount of images as 256 by 256 matrices and want to
smooth them with a 5x5 median filter. Until now I'm not lucky in searching
the R-help list/files.
Thanks,
Hanneke
ir. J.M. (Hanneke) Schuurmans (PhD student)
Department of Physical Geography
Faculty of Geosciences, Utrecht University, The Netherlands
E-mail: h.schuurmans@geog.uu.nl
Telephone: +31(0)30-2532988 (direct), +31(0)30-2532749 (secretary)
Fax: +31(0)30-2531145
Visiting address: Heidelberglaan 2, Utrecht
Postal address: P.O.Box 80...
2007 Jan 17
2
problem with unlist POSIX date at midnight
...:00:00"
unlist(strptime(a,format="%Y-%m-%d %H:%M:%S"))
# sec min hour mday mon year wday yday isdst
# 0 0 0 1 2 106 3 59 0
Could someone help?
Thanks in advance!
Hanneke
--
---------------------------------------------
ir J.M. (Hanneke) Schuurmans
PhD student Hydrology
Department of Physical Geography
Faculty of Geosciences - Universiteit Utrecht
P.O. Box 80115 3508 TC Utrecht
T +31 (0)30 2532988 F +31 (0)30 2531145
W www.geo.uu.nl/staff/schuurmans
2005 May 04
1
segmentation fault using hdf5load() under Unix
...rashes. I compiled R under Unix (Solaris for Sun).
There is nothing wrong with the files, as I can run the same script at
another place where R runs under Linux.
Is it possible it has something to do with the hdf5 libraries where
package(hdf5) refers to?
Regards,
Hanneke
--
ir. J.M. (Hanneke) Schuurmans
PhD student hydrology
Faculty of Geosciences
Department of Physical Geography
Heidelberglaan 2
Postbus 80115
3508 TC Utrecht
The Netherlands
T +31 (0)30 2532988
F +31 (0)30 2531145
E h.schuurmans at geog.uu.nl
2007 Aug 27
1
use apply function with which
Dear R-users,
For a data frame (say in this example X) I want to look up the
corresponding value in a 'look-up data frame' (in this example Y). The
for-loop works but is very time-consuming because 'X' in reality is very
big.
Therefore I would like to have a solution with apply. However, I do not
succeed. Any suggestions?
Thanks in advance,
Hanneke
2010 Jul 18
6
CRAN (and crantastic) updates this week
...ing literate
statistical practice that have embedded R and C++ code chunks. There
is a package vignette that provides many examples.
* delftfews (0.1-0)
Mario Frasca
http://crantastic.org/packages/delftfews
a collection of timeseries sets handling functions used here at work
(Nelen en Schuurmans), initially for the Lizard Scripter.
* dicionariosIBGE (1.1)
Erick Fonseca
http://crantastic.org/packages/dicionariosIBGE
This package contains dictionaries for reading microdata from IBGE
(Brazilian Institute of Geography and Statistics) surveys PNAD, PME
and POF.
* distory (1.4)
J...
2009 Apr 25
1
FreeBSD-7.1 wi-driver error messages
I have FreeBSD 7.1-RELEASE-p4 running on a Soekris 4521 with three
wireless cards that use the wi-driver:
- one mini-pci wireless card:
<Intersil Prism2.5> on pci0
using RF:PRISM2.5
MAC:ISL3874A(Mini-PCI)
Intersil Firmware: Primary (1.1.1), Station (1.8.2)
- and two pcmcia wireless cards:
2012 Mar 02
1
seeing feedback when R CMD check pkg runs unit tests.
good day here,
I'm maintaining a couple of R modules, both on r-forge.
tests for these modules are written making use of unit testing, and I
make use of the svUnit module, part of SciViews-R.
I also make use of examples in the .Rd files.
my question regards 'R CMD check pkg'.
if an _example_ is not run correctly, I get clear feedback on the
command line where I run 'R CMD