Displaying 20 results from an estimated 10000 matches similar to: "how to use the switch statement"
2007 Apr 03
5
converting a list to a data.frame
Hello,
I have a list with n numerical components of different length (3, 4 or 5
values in each component of the list); I need to export this as a text
file where each component of the list will be a row and where missing
values should fill in the blanks due to the different lengths of the
components of the list.
I think that as a first step I should convert my list to a data frame,
but this is
2006 Nov 09
1
Merge: how can I keep discarded values?
Good morning,
I am merging two datasets and I would like to save the non-matching rows
in a separate file.
The problem is how to retrieve the non-matching rows in R.
Example:
DATASET A
code nomi
A1 Franco
A2 Mario
A3 Andrea
A4 Sandro
A5 Luca
DATASET B
code book
A1 Guerra e Pace
A1 Storia di Roma
A2 La coscienza di Zeno
A4
2004 Aug 26
3
plot.new?
Hi all,
I am just beginning to use R and encountered a problem in trying to draw a
regression line using the command "abline(coef(var)" and similar ones but
got the error "plot.new has not been called yet". Does anybody know how can
I call plot.new? Is this an additional package to be found somewhere on the
web? Is it a functionality that I just have to "activate"
2007 Dec 03
3
overlapping labels
Good evening,
I am trying to add labels to the point of a simple plot, using the
text() function; the problem is that sometimes, if two points are too
close to each other, labels overlap and are no longer readable.
I was wondering whether there are options that I can use to prevent this
overlapping (by, for example, placing labels alternatively above and
below the plotted curve), or whether I
2004 Sep 30
1
tcl/tk
Hi all,
I am already using R under Window and would like now to try and install it
under Unix; I read I need tcl/tk installed so I connected to
http://www.scriptics.com downloaded the file and extracted them to a
directory tcltk beside R. I configured (./configure) both packages (tcl and
tk) and compiled (make) them but I am not sure about how to proceed now:
should I launch the command make
2013 Jan 08
1
problems when loading package GenABEL
Dear all,
since yesterday, I have been experiencing problems with the package
GenABEL. When I try to load the package (library(GenABEL)) I get the
following error message:
Loading required package: MASS
Error : .onLoad failed in loadNamespace() for 'GenABEL', details:
call: stringSplit[[1]]
error: subscript out of bounds
Error: package/namespace load failed for ?GenABEL?
The funny
2004 Sep 06
1
R under Windows vs R under Unix/Linux
Hi all,
I would like to know which are the main differences between R under Windos
and R under Linux/Unix and where I can find, if something exists, some
materials and infos on line on this topic.
Thank you very much,
Filippo Biscarini
***************************
Filippo Biscarini,
Research and Development
ANAFI (Italian Holstein Association)
Via Bergamo, 292
26100, Cremona, Italy
2005 Feb 15
1
matlab norm(h) command in R: sqrt(sum(h^2)) - use in an expression
Hi
in matlab I defined a function (double gamma, parameters at the end of
this mail) as
h(i)=((t/d1)^a1)*exp(-(t-d1)/b1)-c*((t/d2)^a2)*exp(-(t-d2)/b2);
h=h/norm(h);
I do know that norm() in matlab is equal to:
sqrt(sum(x^2))
in R
so in R I do it like:
#function (double gamama)
h <- expression((t/d1)^a1*exp(-(t-d1)/b1)-c*(t/d2)^a2*exp(-(t-d2)/b2))
# plot it
t <- seq(0, 20000,
2012 Jan 19
3
Establishing groups using something other than ifelse()
Hello all,
This is one of those "Is there a better way to do this questions". Say
I have a dataframe (df) with a grouping variable (z). This is my base
data. Now I know that there is a higher order level of grouping that
exist for my group variable. So what I want to do is create a new
column that express that higher order level of grouping based on
values in the sub-group (z in this
2005 Sep 26
3
dates are shown as X15.Feb.03
Why is R recognizing dates like this?
Chris Buddenhagen, Botany Department, Charles Darwin Research Station, Santa
Cruz,Galapagos. Mail: Charles Darwin Foundation, Casilla 17-01-3891 Avenida
6 de Diciembre N36-109 y Pasaje California Quito, ECUADOR
______________________________________________________________________
EL CONTENIDO DE ESTE MENSAJE ES DE ABSOLUTA RESPONSABILIDAD DEL
2005 Sep 20
2
Transform variable number of rows per subject to column variables?
Hello,
I am very new to R, but I am having trouble with my dataset.
I have a data frame where a subject has a variable number of multiple
observations for each row, which I wish the transform these
observations to column variables.
An example of the data frame
ID TEST.A TEST.B
1 10 1
1 13 2
1 11 1
2 15 2
2 17 3
And I wish to transform it to the following:
ID TEST.A1 TEST.A2 TEST.A3 TEST.B1
2009 Jun 18
3
merging data.frames of different length
hi,
I have two data.frames each with two columns;
x1
1 4
1 3
1 6
2 9
2 2
2 5
3 6
3 7
3 4
x2
1 -3
1 -7
2 -3
2 -2
2 -8
3 -1
3 -2
3 -1
now I want to merge this data.frames to one data.frame.
The problem is, that sometimes there is a different number of elements
per category.
(like above x1 has 3 values for the value 1 in the first row, but x2
has only 2 values for the value 1 in the
2006 Feb 08
2
2.0.3-pre2: Spurious UPS UPS@localhost battery is
Peter Selinger wrote:
> Hm. I need more information, as NUT seems to garble the values even
> before I can see them. I am not so worried about the date and
> temperatures (although, strangely, the battery replacement date
> appears to be Sept 25, 2001, which makes no sense). But the voltage is
> definitely important.
>
> [...]
>
Thanks Peter - I'll send the new
2009 Mar 13
7
Weird Load and Battery Temp Readings
I've acquired and installed NUT 2.4.1 on a D-Link DNS323 NAS. With
exception of Load and Battery Temp readings all works well. A upsc
ups at localhost command returns;
battery.charge: 100
battery.charge.low: 10
battery.charge.warning: 50
battery.date: 2001/09/25
battery.mfr.date: 2008/06/05
battery.runtime: 2122
battery.runtime.low: 120
battery.temperature: 3022999999999998800
battery.type:
2011 Jul 05
3
plotting survival curves (multiple curves on single graph)
Hello.
This is a follow-up to a question I posted last week. With some
previous suggestions from the R-help community, I have been able to
plot survival (, hazard, and density) curves using published data for
Siler hazard parameters from a number of ethnographic populations.
Can the function below be modified, perhaps with a "for" statement, so
that multiple curves (different line
2012 May 13
2
Discrete choice model maximum likelihood estimation
Hello,
I am new to R and I am trying to estimate a discrete model with three
choices. I am stuck at a point and cannot find a solution.
I have probability functions for occurrence of these choices, and then I
build the likelihood functions associated to these choices and finally I
build the general log-likelihood function.
There are four parameters in the model, three of them are associated to
2012 Apr 19
3
How to "flatten" a multidimensional array into a dataframe?
Hi,
I have a three dimensional array, e.g.,
my.array = array(0, dim=c(2,3,4), dimnames=list( d1=c("A1","A2"),
d2=c("B1","B2","B3"), d3=c("C1","C2","C3","C4")) )
what I would like to get is then a dataframe:
d1 d2 d3 value
A1 B1 C1 0
A2 B1 C1 0
.
.
.
A2 B3 C4 0
I'm sure there is one function to do
2012 Sep 07
6
splitting character vectors into multiple vectors using strsplit
Hi folks,
Suppose I create the character vector charvec by
> charvec<-c("a1.b1","a2.b2")
> charvec
[1] "a1.b1" "a2.b2"
and then I use strsplit on charvec as follows:
> splitlist<-strsplit(charvec,split=".",fixed=TRUE)
> splitlist
[[1]]
[1] "a1" "b1"
[[2]]
[1] "a2" "b2"
I was wondering
2003 Nov 18
1
aov with Error and lme
Hi
I searched in the list and only found questions
without answers e.g.
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/19955.html
: Is there a way to get the same results with lme as
with aov with Error()?
Can anybody reproduce the following results with lme:
id<-c(1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5)
2009 Nov 29
3
Plotting observed vs. Predicted values, change of symbols
Dear Wiz[R]ds,
I am deeply grateful for the help from Duncan Murdoch, Gray Calhoun, and
others. We are almost there. For whatever reason, I can't change the symbol
from a circle to a triangle in the upright posture plots. Any ideas? I have
included the problem in full.
# tritiated (3H)-Norepinephrine(NE) disappearance from plasma
# concentrations supine and upright
# supine
datasu <-