search for: uzh

Displaying 20 results from an estimated 42 matches for "uzh".

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2008 May 05
1
Problems using rfImpute
...1 3 1 1 1 1 1 1 ... But there are still NA`s in the data frame. Sorry if this reason is only ma stupididty and thanks for answering in advance. B. Birgit Lemcke Institut f?r Systematische Botanik Zollikerstrasse 107 CH-8008 Z?rich Switzerland Ph: +41 (0)44 634 8351 birgit.lemcke at systbot.uzh.ch 175 Jahre UZH ?staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.? MNF-Jubil?umsevent f?r gross und klein. 19. April 2008, 10.00 Uhr bis 02.00 Uhr Campus Irchel, Winterthurerstrasse 190, 8057 Z?rich Weitere Informationen http://www.175jahre.uzh.ch/naturwissenschaft
2007 Jun 28
5
Repeat if
...Would be nice if somebody could help me. Perhaps I´m thinking too complicated and there is an easier way to do this. Thanks in advance Greetings Birgit Birgit Lemcke Institut für Systematische Botanik Zollikerstrasse 107 CH-8008 Zürich Switzerland Ph: +41 (0)44 634 8351 birgit.lemcke@systbot.uzh.ch [[alternative HTML version deleted]]
2008 May 05
1
Count data in random Forest
...orest. Is randomForest() able to deal with count data? Or is there no difference because only the ranks are used in the trees? Thanks in advance Birgit Birgit Lemcke Institut f?r Systematische Botanik Zollikerstrasse 107 CH-8008 Z?rich Switzerland Ph: +41 (0)44 634 8351 birgit.lemcke at systbot.uzh.ch 175 Jahre UZH ?staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.? MNF-Jubil?umsevent f?r gross und klein. 19. April 2008, 10.00 Uhr bis 02.00 Uhr Campus Irchel, Winterthurerstrasse 190, 8057 Z?rich Weitere Informationen http://www.175jahre.uzh.ch/naturwissenschaft
2007 Oct 10
3
as.dist with diagonal unequal zero
...15 20 0 Is there perhaps a possibility to give the diagonal as a vector within as.dist? I would be glad if somebody could help me. Greetings Birgit Birgit Lemcke Institut f?r Systematische Botanik Zollikerstrasse 107 CH-8008 Z?rich Switzerland Ph: +41 (0)44 634 8351 birgit.lemcke at systbot.uzh.ch
2012 Sep 27
3
problem with nls starting values
...r. What am I doing wrong? Any help would be most appreciated Best benedikt -- Benedikt Gehr Ph.D. Student Institute of Evolutionary Biology and Environmental Studies University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Office 13 J 36b Phone: +41 (0)44 635 49 72 http://www.ieu.uzh.ch/staff/phd/gehr.html
2016 Apr 04
4
Fligner-Killeen test on binary data
Hello, I investigate survival until the following year (0,1) and I wish to test if the variance in survival for two or more groups are significantly different from each other. I read that the Fligner-Killeen test is a non-parametric test which is very robust against departures from normality but is it correct (valuable technique for publication) to use it on binary data? In other
2016 Apr 04
0
Fligner-Killeen test on binary data
...nking and comparing absolute differences from the group median, which for binary data is generally 0 or 1, so all absolute differences will be 1.... Put differently, the results are more than likely to be complet rubbish. -pd > On 04 Apr 2016, at 11:48 , emeline mourocq <emeline.mourocq at uzh.ch> wrote: > > Hello, > > > > I investigate survival until the following year (0,1) and I wish to test if > the variance in survival for two or more groups are significantly different > from each other. > > > > I read that the Fligner-Killeen test is a...
2008 Sep 19
1
getting line breaks with xtable
Sorry, for asking the same question again, but I got no reactions the last time. Maybe it was just overseen by the experts. I'm using the xtable function with Sweave and Lyx and I would like to know how to get automatic line breaks for long strings in a column of the table. I've learned from the Lyx wiki that the Latex command \linebreak produces table cells with multiple lines. I tried to
2010 Jul 15
1
Warning message in summary of PGLM
...o 0. Could you tell me what should I correct to solve this problem? Best regards, Ana Navarrete ***************************************************************** Ana Navarrete Anthropological Institute and Museum Winterthurerstrasse 190 8057 Zurich Tel: +41-798693918 E-mail: a.navarrete at aim.uzh.ch
2010 Aug 23
2
lmer() causes segfault
...eone tell me what I am doing wrong? Any help is greatly appreciated. With best regards, Bertolt -- Dr. Bertolt Meyer Senior research and teaching associate Social Psychology, Institute of Psychology, University of Zurich Binzmuehlestrasse 14, Box 15 CH-8050 Zurich Switzerland bmeyer at sozpsy.uzh.ch
2011 May 26
2
summing array elements
Hi to everybody I have an array with dimensions 2,4,3,3. Wanting to sum the matrices in the first two dimensions, I'm trying to use the "apply" function, but with no results. Have to say I'm quite new with R syntax. tx in advance marco [[alternative HTML version deleted]]
2007 Dec 19
3
median of binned values
Dear list, I have a vector (array, table row, whatever is best) of frequency values for categories (or bins), and I need to find the median category. Trivial to do by hand, but I was wondering if there is a means to do it in R in an elegant way. The obvious medioan(vector) returns the median frequency for the binns, and that is not what I want. i.e,: freq cat1 1 cat2 10
2010 Apr 03
0
Multilevel model with lme(): Weird degrees of freedom (group level df > # of groups)
...would appreciate it if someone could explain this to me... What am I missing? Regards, Bertolt -- Dr. Bertolt Meyer Senior research and teaching associate Social Psychology, Institute of Psychology, University of Zurich Binzmuehlestrasse 14, Box 15 CH-8050 Zurich Switzerland bmeyer at sozpsy.uzh.ch tel: +41446357282 fax: +41446357279 mob: +41788966111
2011 Aug 04
0
phyres function in caper package
...But then I get the following error message: Error: could not find function "phyres" Does anyone know what I'm doing wrong? Janneke van Woerden Janneke van Woerden Anthropological Institute and Museum Winterthurerstrasse 190 8057 Zurich Tel: +41-446355424 Email: j.vanwoerden@aim.uzh.ch = [[alternative HTML version deleted]]
2007 Sep 24
1
save 3dplot to file
..., type="p", col=rainbow(1000),size=5) text3d(PCoA, text=Nam) How can I save it including the labels to a jpg-file? Thanks in advance. Birgit Birgit Lemcke Institut für Systematische Botanik Zollikerstrasse 107 CH-8008 Zürich Switzerland Ph: +41 (0)44 634 8351 birgit.lemcke@systbot.uzh.ch [[alternative HTML version deleted]]
2008 Dec 19
1
diagonal lines in legends of ggplot2
Hi, I have the following problem with ggplot2: When I specify black contours for bars in a barplot, ggplot automatically shows diagonal lines in the legend boxes. Is there a way, to remove these diagonal lines? Here's a simple example: library(ggplot2) df<-data.frame(x=gl(6,1),y=rnorm(6,100,50)) ggplot(df,aes(y=y,x=x,fill=x))+geom_bar(aes(group=x),colour='black',size=1)+
2009 Apr 17
1
can not start guest domain exported from NFS
Dear All: I am using Xen 3.3 on a Fedora 8 machine and failed to start a guest domain from an exported NFS directory. The step I follow is as follows NFS server: 192.168.1.1 NFS client: 192.168.1.201 1: I copy the guest.img, which can be corrected booted on NFS client to the NFS server. 2: On the NFS server mount guest.img /xen/guest; such that if I do a ls /xen/guest, I can
2011 Jul 28
3
smooth scatterplot and geo map
Hello everybody, I'm trying to understand how to draw a smoothed scatterplot on a geographic map with R. Have a dataframe with point locations (long, lat) and was able to simply plot these points on a shp map by using the maptools package. However, instead of having simply the raw points on the map, I would like to have a "smoothed" scatterplot of the same superimposed on the map.
2012 Apr 30
0
file.copy(src, src, recursive=TRUE) causes a segfault (Was: Re: R CMD check . segfault on re-building vignettes)
...le or directory Here the maximum file path length of the OS is probably kicking in before reaching the buffer overflow, cf. http://aroma-project.org/howtos/UseLongFilenamesOnWindows My $.02 /Henrik On Mon, Apr 30, 2012 at 8:48 AM, Sebastian Meyer <Sebastian.Meyer at ifspm.uzh.ch> wrote: > (Warning: There is some potential that this message is redundant.) > > I think that i have spotted an issue with R CMD check that does not > trace back to a rare case, so it must have been reported already or i am > doing something stupid. However, to be sure and beca...
2011 Dec 19
2
nlrob problem
Dear all, I am not sure if this mail is for R-help or should be sent to R-devel instead, and therefore post to both. While using nlrob from package 'robustbase', I ran into the following problem: For psi-functions that can become zero (e.g. psi.bisquare), weights in the internal call to nls can become zero. Example: d <- data.frame(x=1:5,y=c(2,3,5,10,9)) d.nlrob <-