Displaying 20 results from an estimated 500 matches similar to: "From z to Rho"
2007 Jul 06
5
Text Mining
Hi everybody,
I am a new R user. Is there any package devoted to "text mining" analysis in
R ?
Thanks
Gilles
lepape.gilles at neuf.fr
2008 Dec 08
2
Permutation exact test to compare related series
I all,
is there a way with R to perform an exact permutation test to replace the
wilcoxon test to compare paired series and/or to perform pairwise multiple
comparisons for related series after a Friedman test ?
Thanks
Gilles
2008 Nov 10
3
ttda and text-mining
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
URL : <https://stat.ethz.ch/pipermail/r-help/attachments/20081110/bf60714f/attachment.pl>
2009 Jun 19
2
Post-Hoc Test for Kruskal-Wallis Rank Sum Test
Hi list,
I would like to know if there is a way in R to execute a post-hoc test
(factor levels comparison, like Tukey for ANOVA) of a non-parametric
analysis of variance (kruskal.test() function object). I was looking for
something like the Dunn Test. I’ve searched the internet but nothing seemed
to define a way to it.
Do You have any suggestion? Other equivalent test maybe!
Thanks in
2008 Nov 12
2
pairwise.wilcox.test
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Nom : non disponible
URL : <https://stat.ethz.ch/pipermail/r-help/attachments/20081112/618073fe/attachment.pl>
2009 Feb 10
2
Mixed ANCOVA with between-Ss covariate?
Hi all,
I have data from an experiment with 3 independent variables, 2 are
within and 1 is between. In addition to the dependent variable, I have
a covariate that is a single measure per subject. Below I provide an
example generated data set and my approach to implementing the ANCOVA.
However the output confuses me; why does the covariate only appear in
the first strata? Presumably it should
2008 Dec 24
1
ggplot2's qplot() not rendering title descender
On my machine (Mac OS 10.5.6, R 2.8.1) the following plot is drawn such that
a substantial portion of the descender of the title is covered by the plot:
library(ggplot2)
qplot(x=1:10,y=1:10,main='p q j g')
--
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University
www.thatmike.com
Looking to arrange a meeting? Do so at:
http://www.timetomeet.info/with/mike/
~
2009 Feb 19
2
error bars
Hello, I have a very simple data set i imported from excel including 96
averages in a column along with 96 standard errors associated with those
averages (calculated in excel). I plotted the 95 averages using r and I am
wondering if it is possible to plot the second column of standard errors
while applying error bars to each value so they represent the error
corresponding to each average?
thanks,
2009 Jan 28
2
Help with normal distribution in random samples...
Hi!!!
First time 'R' user looking for a little assistance. Here is what I have so
far:
practice1 = matrix ((runif(5000, min =0, max = 12)), 100)
which is creating 50 samples, for 100 cases, distributed between 0-12. What
I would like is to be able to set the mean and SD so that the data is
normally distributed around lets say 7. Any help I can get with achieving
that goal would be
2009 Jan 11
2
I'm looking for a book about spatial point patterns (Diggle, 2003)
To understand some functions about spatial point patterns in "spatstat" ,I
should know some background about it, and the best way is to read the
monograph, and "Statistical Analysis of Spatial Point Patterns" (2nd edt.)
is a better choise. But I can not find it anywhere I can. Who can help me?
Thank you!
-----
unangu at gmail.com
--
View this message in context:
2009 Feb 19
2
colored maps again
I'm trying to create a colored map that would show the number of students
per state.
My data frame consists of two columns - state and count.
I'm using the following code
library(maps)
map("usa")
library(plotrix)
state.col<-color.scale(gre$count,0,0,c(0,1))
map("state",fill=TRUE,col=state.col)
I'm getting a map, but the values are not being mapped to correct
2009 Jan 26
3
Mode (statistics) in R?
Hopefully this is a pretty simple question:
Is there a function in R that calculates the "mode" of a sample? That is, I would like to be able to determine the value that occurs the most frequently in a data set.
I tried the default R "mode" function, but it appears to provide a storage type or something else.
I tried the RSeek and some R documentation that I
2009 Feb 14
2
anova help
Hi all, I am trying to run a two factor anova, but one of the factors is a
random factor, now I am also running in SPSS and it seems its dividing by
the wrong term to get the appropriate F term. here is my data. In SPSS the F
scores about double the ones in R, how can I specify one of my factors as a
random factor or change it to where it does the right model fitting? I am
using the lm command
2009 Jan 11
2
Strange behaviour of paste
Hello,
here I have some code, which behaves quite strange, IMHO.
There is a "res.txt" which will be collected before printing it.
There is a paste-statement, which has a comment at the end of the line,
which is this one: "# !!!!!HERE!!!!!".
If you throw out the first hash-mark "#" on that line,
the printout behaves like if it is done for each of the
for-loop
2009 Feb 03
3
Boxplots by variable
Dear R users,
I have a matrix "final" which looks like this:
final
oSO4 oNO3 mSO4 mNO3
[1,] 3.3728 0.2110 1.9517421 1.01883602
[2,] 0.8249 0.0697 1.5970292 0.11368781
[3,] 0.2636 0.1004 0.6012445 0.24356332
[4,] 8.0072 0.3443 6.1016998 3.63207149
[5,] 13.5079 0.6593 12.4011068 1.55323386
[6,] 6.1293 0.1989 5.7620926 0.12884845
[7,] 0.6004 0.0661
2009 Feb 07
1
lme() direction
Hi guRus,
I'm looking for advice on a good way to approach analysis of some
multi-level data I've obtained. I had humans classify words and
measured response time. Words were 10 positive words ("happy", "joy",
etc) and 10 negative words ("sad","grumpy", etc). Words were also
presented in either white, red or green color. All variables were
2009 Jan 23
2
R for Computational Neuroscience?
Hi all,
I've noticed that many computational neuroscience research groups use
MATLAB. While it's possible that MATLAB may have some features
unavailable in R, I suspect that this may instead simply be a case of
costly tradition, where researchers were taught MATLAB as students and
pay for it as researchers because it's all they know.
I'd like to attempt to break the cycle by
2009 Feb 02
6
Problems in Recommending R
Dear List,
One persistent feedback I am getting to people who are newly introduced to R
( especially in this cost cutting recession) is -
1) The website looks a bit old.
While the current website does have a lot of hard work behind it, should n't
a world class statistics package have a better website instead.
You can check out www.knime.org which is an open source software , and free,
and
2009 Jan 30
2
help with time series
Hello everyone
I'm working with R 2.8.1 on a windows machine
I have a question regarding time series analysis
The first question is how does R expect the input file to be structured?
I'm working with a *.txt file similar to the abbreviated one here:
Date,stage
4/2/1953,7.56
4/3/1953,7.56
4/4/1953,7.54
4/5/1953,7.53
4/6/1953,7.5
4/7/1953,7.47
4/8/1953,7.44
4/9/1953,7.41
4/10/1953,7.37
2008 Dec 16
1
How to make a smooth ( linear ) CDF plot?
This question might seem silly, because I felt that it MUST be in the
mailing list archives or help files somewhere, but I simply couldn't find
it.
I want to make some simple CDF (cumulative distribution function) plots
to check whether distributions are Gaussian / normal. But in order to check
how "normal" the distribution is, I really need the y-axis to be Gaussian as
well