Displaying 20 results from an estimated 500 matches similar to: "Space between axis label and tick labels"
2006 Jan 02
2
Plotting the mean of data
Hi all!
I've got a datstructure like this:
subject week value
1 1 4
2 1 8
3 1 3
4 1 5
1 2 5
2 2 6
3 2 2
4 2 6
1 3 3
2 3 7
3 3 3
4 3 7
I'd like to plot the mean of 'value' against week. Is there a direct way
of doing this or do I have to make a new structure with the calculated
values and then plot it?
All the best!
--
###########################################
Kare
2008 Apr 18
1
Overall p-value from a factor in a coxph fit
Hi all.
If I run the simple regression when x is a categorical variable ( x <-
factor(x) ):
> MyFit <-coxph( Surv(start, stop, event) ~ x )
How can I get the overall p-value on x other than for each dummy
variable?
> anova(MyFit)
does NOT provide that information as previously suggested on the list.
All the best,
Kare
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2008 Oct 20
3
Trying to pass arrays as arguments to a function
I'd like to avoid looping through an array in order to change values in
the array as it takes too long.
I red from an earlier post it can be done by "do.call" but never got it
to work. The Idea is to change the value of "y" according to values in
"x". Wherever "x" holds the value 3, the corresponding value in "y"
should be set to 1.
So I
2006 Apr 05
1
Uneven y-axis scale
Dear R-gurus!
Is it possible within boxplot to break the y-scale into two (or
anything)? I'd like to have a normal linear y-range from 0-10 and the
next tick mark starting at, say 60 and continue to 90. The reason is for
better visualising the outliers.
All the best,
Kare
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2006 Apr 06
1
Sorting problem
R-gurus...
I've got a 5 column dataframe where I'd like to plot each ID's "b"
against "c" with "b" in ascending order (within the same ID). How do I
sort "b" so that the other variables are altered equally?
ID a b c d
101 1 240 26.7 21.85
101 2 335 21.8 21.85
101 3 1387 26.6 21.85
101 4 877 24.1 21.85
2008 May 23
1
Strange julian and/or strptime
Hi r-helpers...
Why do I get this strange huge jump of 36524 days when changing "origin"
from 1969-01-01 to 1968-12-31. It should still be close to zero! This
really messes up my calculations of follow-up times in my analyses.
> julian(strptime("010169", format = "%d%m%y"),origin =
as.Date("1969-01-01"))
> Time difference of -0.04166667 days
>
2008 Oct 14
1
Extended summary
Is there a function providing more descriptive statistics than
"summary()"? I'm working with a coxph analyses and would like to have
more info on certain numbers.
If my call is something like:
Call:
coxph(formula = Surv(followup, CasesCancer) ~ age + BMI + parity + HRT)
I'd like to know:
* How many CasesCancer was excluded (not only the total number of
excluded due to
2006 Dec 08
2
A smal fitting problem...
Dear R-helpers,
I'm for sure not familiar with R, but it seem like a nice sofware tool,
so I've decided to try using it.
Here is my problem I just can't figure out:
I'd like to do least square fit of a straight horizontal (a = 0) line y
= ax + b through some data points
x = (3,4,5,6,7,8)
y = (0.62, 0.99, 0.83, 0.69, 0.76, 0.82)
How would i find b?????
All the best,
Ked
2007 Nov 01
2
ploting a comparison of two scores, including the labels in the plot
Hello r-help!
I have data with two kind of ratings on status of 100 occupations. The
first kind of rating is on the percieved "objective" status that these
occupations have in society at large, and the second kind or rating is
on the status that the respondents think that these occuption *should*
have.
The ratings were originally integer values in the rage 1-9, but in the
current data,
2006 Dec 08
0
Re : A smal fitting problem...
May be you are also not familiar with statistic. the solution of
min \sum_{i=1}^{n} (y_{i}-b)^{2} is the mean. So the solution is
b<-mean(y)
Justin BEM
Elève Ingénieur Statisticien Economiste
BP 294 Yaoundé.
Tél (00237)9597295.
----- Message d'origine ----
De : Kåre Edvardsen <ked@nilu.no>
À : R-help <r-help@stat.math.ethz.ch>
Envoyé le : Vendredi, 8 Décembre 2006,
2008 Feb 23
1
Aranda-Ordaz
Hi all,
Does anyone know R code or SAS code for Aranda-Ordaz link family?
thanks,
xiao yue
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2004 Jan 12
0
Re: Questions regarding [patch] PostgreSQL pdb backend
Hi Nilu,
Nilanjan Bhowmik wrote:
> Is postgress passdb backend submitted by Hamish patch available in the
> CVS?
> If true, then please put a post in the newsgroup and let us know.
>
> I am ready to test the patch when it is part of the CVS since it is
> easier to send you the feedback.
Yes, the patch is currently in the SAMBA_3_0 branch of CVS and will also
be in the
2009 Oct 21
1
Bootstrapping confidence intervals
Hello,
We are a group of PhD students working in the field of toxicology. Several
of us have small data sets with N=10-15. Our research is mainly about the
association between an exposure and an effect, so preferrably we would like
to use linear regression models. However, most of the time our data do not
fulfill the model assumptions for linear models ( no normality of y-varible
achieved even
2009 Jul 20
2
What am I doing wrong?
Hi Gang,
I've got the latest SVN branch of 1.4 downloaded onto SUSE
11.0. Everything is happy EXCEPT, I can't get fax to be recognized by make
menuselect. I tried copying app_rxfax.c and app_txfax.c to the apps
directory and starting again from ./configure, but no joy. Any suggestions?
Danny Nicholas
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2009 Feb 13
1
Bootstrap or Wilcoxons' test?
Hi!
I'm comparing the differences in contaminant concentration between 2
different groups of people ( N=36, N=37). When using a simple linear
regression model I found no differences between groups, but when evaluating
the diagnostic plots of the residuals I found my independent variable to
have deviations from normality (even after log transformation). Therefore I
have used bootstrap on
2005 Nov 30
1
Addon packages
I'm trying to add 'gplots' from install.packages("gplots", lib =
"/usr/lib/R/library", dependencies = TRUE) on a linux host, but R does
not seem to figure out there's a new package installed (yes, I've
restarted the R-session). I've tried the default, and different library
folders, without success. Installation does not report any warnings or
bad exit
2008 Nov 03
1
quantcut
I'm trying to devide x into tertiles, but ends up with integer limits
even x holds one decimal. The analysis is extremely sensitive to the
limits and I like to keep them right. How can that be done?
quartiles <- quantcut( x[x >= 0], q=seq(0,1, by=(1/3))
> table(quartiles)
quartiles
[180,344] (344,448] (448,644]
16467 16476 16452
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2004 Aug 26
0
suddent random problem with Windows boxes
Hello all,
I am not a Samba expert by any means, so please bear with me if I make a fool
of myself.
We run a small network in this office. There is a Windows domain running off
of a Debian Linux server, running Linux 2.4.25. There are mostly Windows
2000 and Windows XP machines, but there are still a few users clinging on to
Windows 98 (this is because they run specialized testing software
2005 Dec 02
1
Time series influenced by half-time, intake and treatment...
Hi!
First of all: I'm a newbie to both statistics and R, so please be
patient with me... I do however, like R because I've been programming
(pascal, IDL, perl, C etc) and designing models since -92, but never
related to statistics.
Ok, here we go:
I've got a set of 15 people, all of them observed over 10 weeks (10
analysed blood samples) with - let us kall it the A-value - influenced
2004 Oct 12
5
Two Questions concerning samba - file access times - two instances on one server
Hello everybody,
i have two questions concerning samba.
1st Topic - file times
NTFS has three file times for each file,
the create time, the change time and the
access time. The create time will never be
modified, the change time will be changed
every time you save a file, the access time
will be changed every time you access (read)
a file. If i access a file on a samba share,
the access