search for: hanneke

...rom 2 different models in partially paired datasets (i.e. some similar and some different cases), with one continuous independent variable in each separate model? (in a survival analysis context)? I have noticed that the rcorrp.cens function can be used for paired data. Thanks for any help, Hanneke Wijnhoven -- Hanneke A.H. Wijnhoven (PhD) Institute of Health Sciences Vrije Universiteit Amsterdam De Boelelaan 1085 1081 HV Amsterdam The Netherlands Tel. +31 (0) 20 5989951 Fax. +31 (0) 20 5986940 hanneke.wijnhoven at falw.vu.nl

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, Utre...

...# 0 0 1 1 2 106 3 59 0 a="2006-03-01 00:00:00" 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

...85, 0.628, 1.017, 3.954, 1.009, 0.831, 1.617, R puts "+" with the numbers, they do not appear in the test.R file, so I have no clue where R gets them from and how I can get rid of it.. at least R cannot calculate anything with these +'s in my array! what's going wrong?? best, Hanneke _________________________________________________________________ [[alternative HTML version deleted]]

...lems but when loading a file, R crashes. 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

...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 c1=c('a','a','b') c2=c('j','k','k') V1=c('a','a','a','a','b','b','b','b')) V2=c('i','j','k','l','i','j','k','l') V3=c(4,3...