Displaying 20 results from an estimated 41 matches for "witwatersrand".
2010 Aug 17
4
replacing values in a vector
...oop.
I would also like to assign the names automatically. I can create them
easily using paste, but how does one get R to treat the resulting
character strings as object names to which values can be assigned?
Thanks!
Karen
---
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand, Johannesburg, South Africa
--
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2012 Jun 03
1
Multiple imputation, multinomial response & random effects
...(tactic) ~ mass+age+year, model = "mlogit", data = a.out$imputations)
but it probably isn't the most elegant solution. Does anybody have any suggestions?
Thanks in advance,
Davina
------------------------------------------
Animal, Plant and Environmental Sciences
University of the Witwatersrand
South Africa
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2007 Oct 31
6
Serving MS Access Databases, with ACL
...really like to see an example.
Lastly, I do not think I want to use oplocks.
Any help, will be greatly appreciated.
God bless.
--
Jayendren Anand Maduray
Microsoft Certified Professional
Network Plus
Senior IT Administrator
Perinatal HIV Research Unit
Wits Health Consortium
University of the Witwatersrand
Alternate email address: jayendren@mweb.co.za
Fax Number: 0866857317
...There are 10 types of people,
those who understand binary
and those who do not...
2005 May 13
5
Conflict between xtable and Hmisc when using Sweave?
..._
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 2
minor 1.0
year 2005
month 04
day 18
language R
--
--------------------------------------------
Dr. Sander P. Oom
Animal, Plant and Environmental Sciences,
University of the Witwatersrand
Private Bag 3, Wits 2050, South Africa
Tel (work) +27 (0)11 717 64 04
Tel (home) +27 (0)18 297 44 51
Fax +27 (0)18 299 24 64
Email sander at oomvanlieshout.net
Web www.oomvanlieshout.net/sander
2005 Jun 28
2
enhanced MDS
...y are non-metric, which means, as I
understand it, that they relate the rank orders of the variables rather than
the actual distances.
Could I use these non-metric MDS packages even if my distances are metric?
Thanks
Karen
--
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
P/Bag X3, Wits, 2050
Tel: +2711 717-6425
2005 Jul 12
3
adding a factor column based on levels of another factor
...d a column to each subset showing the group, then
re-join all the subsets. This seems clumsy and prone to errors. Anyone
know a better way?
I've looked at expand.grid and gl but they don't seem to do what I want.
Thanks!
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
South Africa
1999 Aug 26
1
error bars on barplots
...1.3, 2.4, 3.5, 4.1, 5.3)
lcl<-c(.9, 1.8, 2.7, 3.8, 5.0)
plot(x,y, ylim=range(c(lcl,ucl)))
arrows(x,ucl,x,lcl,length=.05,angle=90,code=3)
#or
segments(x,ucl,x,lcl)
but I can't get it to work on a barplot. Any ideas?
Thanks!
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
Tel: 011 716-2218
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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1999 Dec 21
2
generating a sequence
...everyone
I'm trying to generate a vector of the form
a <- c(1,2,3,4,1,2,3,1,2,1) where n = 5
in a general way, where n can be any positive integer.
I've run out of ideas. Does anyone have any suggestions?
Thanks
Karen
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
Tel: 011 716-2218
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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1999 Dec 21
2
generating a sequence
...everyone
I'm trying to generate a vector of the form
a <- c(1,2,3,4,1,2,3,1,2,1) where n = 5
in a general way, where n can be any positive integer.
I've run out of ideas. Does anyone have any suggestions?
Thanks
Karen
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
Tel: 011 716-2218
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
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2005 Feb 16
5
Repeating grey scale in graph?
...rm i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 0.1
year 2004
month 11
day 15
language R
>
--
---------------------------------------------------------
Dr. Sander P. Oom
Animal, Plant and Environmental Sciences
University of the Witwatersrand
Private Bag 3
Wits 2050
South Africa
Tel (work) +27 (0)11 717 64 04
Tel (home) +27 (0)18 297 44 51
Fax +27 (0)18 299 24 64
Email sander at oomvanlieshout.net
Web www.oomvanlieshout.net/sander
2005 Jun 10
2
Replacing for loop with tapply!?
...r is in something like tapply, but my understanding of these
commands is still to limited to see the solution. Could someone show me
the way!?
Thanks in advance,
Sander.
--
--------------------------------------------
Dr Sander P. Oom
Animal, Plant and Environmental Sciences,
University of the Witwatersrand
Private Bag 3, Wits 2050, South Africa
Tel (work) +27 (0)11 717 64 04
Tel (home) +27 (0)18 297 44 51
Fax +27 (0)18 299 24 64
Email sander at oomvanlieshout.net
Web www.oomvanlieshout.net/sander
2005 May 24
3
Plot range resizing when adding additiona lines
Hi -- I have searched the documentation and archives on graphing
capabilities in R for the past couple of hours, but I haven't been able
to find anything directly related to my problem.
I want to create a plot with several lines displayed on it. I want each
line to be displayed in a different color, so it seems the only way to
do this is to create a plot and then use the lines() function.
2005 Jun 09
7
plot3d
hello,
to use the function plot3d, i should use the package R.basic!
plot3d {R.basic}
If people know exactly a site to load this package, please give me the URL!
Thanks
Sabine
---------------------------------
[[alternative HTML version deleted]]
2005 Aug 15
3
How to repeat code snippet for several variables in a data frame?
...nd this code snippet, such that I can repeat
the same code snippet for all other variables in the data frame (i.e.
def, ghi, etc.).
Thanks for your suggestions!
Sander.
--
--------------------------------------------
Dr Sander P. Oom
Animal, Plant and Environmental Sciences,
University of the Witwatersrand
Private Bag 3, Wits 2050, South Africa
Tel (work) +27 (0)11 717 64 04
Tel (home) +27 (0)18 297 44 51
Fax +27 (0)18 299 24 64
Email sander at oomvanlieshout.net
Web www.oomvanlieshout.net/sander
2005 May 15
3
adjusted p-values with TukeyHSD?
hi list,
i have to ask you again, having tried and searched for several days...
i want to do a TukeyHSD after an Anova, and want to get the adjusted
p-values after the Tukey Correction.
i found the p.adjust function, but it can only correct for "holm",
"hochberg", bonferroni", but not "Tukey".
Is it not possbile to get adjusted p-values after
2012 May 26
2
Assessing interaction effects in GLMMs
...-0.876 -0.185 -0.047 0.006 0.254
T1200: T1300:
Time11h00
Time12h00
Time13h00
Time14h00
TertileLow
Max
Min
Tm11h00:TrL
Tm12h00:TrL
Tm13h00:TrL 0.081
Tm14h00:TrL 0.098 0.116
Luke Duncan
*Post-doctoral** Fellow*
*School of Animal, Plant and Environmental Sciences*
*University of the Witwatersrand*
*Johannesburg, South Africa*
**
*+27 72 312 0330*
*+27 11 717 6452*
[[alternative HTML version deleted]]
1999 May 19
1
R and ArcView
Does anyone know if an R plug-in exists for the GIS package
ArcView running under Windows98 or NT? I know such a plug-in is
available for S-PLUS.
Thanks
Karen Kotschy
Centre for Water in the Environment
Department of Botany
University of the Witwatersrand
Johannesburg
South Africa
Tel : +2911 716-2218
Postal address:
P/Bag 3
P.O Wits
2050
South Africa
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or...
1999 Jul 15
1
matrix indices
...g x[3] prints all 10 values of column 3, although the length of
the vector =1. Why?
x[,3] and x[[3]] both give all 10 values of column 3, length=10.
What is the difference between these two, actually?
Thanks
Karen Kotschy
Centre for Water in the Environment
Department of Botany
University of the Witwatersrand
Johannesburg
South Africa
Tel : +2911 716-2218
Postal address:
P/Bag 3
P.O Wits
2050
South Africa
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or...
1999 Aug 26
1
moving R objects
Another question:
Is it possible to move R objects from one directory to another
without copying the whole .RData and .Rhistory files?
(I'm running under Linux)
Thanks
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
Tel: 011 716-2218
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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 subject...
1999 Nov 17
0
help with multiple comparisons
..., Holm and Hochberg) a while ago (see
below), but I am still battling to work out how I would actually use
one of these on my data.
Is there anyone who would be prepared to guide me through the
process? Please?
Thank you
Karen
Karen Kotschy
Centre for Water in the Environment
University of the Witwatersrand
Johannesburg
Tel: 011 716-2218
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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 subject...