Displaying 20 results from an estimated 11000 matches similar to: "boxplot"
2010 May 12
2
Whiskers on the default boxplot {graphics}
How are the lower/upper whiskers defined in the default version of boxplot {graphics}?
I tried help(boxplot) and searching www.rseek.org, but I was unable to determine an absolute answer.
I checked out the definition of boxplot according to Wikipedia (http://en.wikipedia.org/wiki/Box_plot), but it also had several approaches
listed for how the whiskers could be determined, so I'm just
2002 Feb 21
2
help understanding box plots
Another naive stats question. I'm trying to better understand what
boxplots are telling me.
I think what I see is the median and the boundaries of the 1st and 3rd
quartiles. The whiskers represent the range of the data unless there
are points which are outside "range" (default: 1.5) times the distance
from the median to that quartile. Is that right? I've read the
2004 Mar 01
3
boxplot notches
Dear list members,
Can anyone tell me how the notches in boxplot(Y~X,notch=T) are
calculated? What do these notches represent exactly? I?d suppose they
are Conficence Intervals for the median, but I?ve also been told they
might show Least Significant Difference (LSD) equivalents.
I would very much appreciate any help from you.
Best regards
Chris.
2010 Feb 23
2
Importing a file to r
Hello
I am trying to import the attached file Curva LIBOR to R. I am trying to use
the following commands and obtaining the following errors
> res <- read.xlsx("C:\\Users\\FELIPE
PARRA\\Documents\\Quantil\\Federacion\\Curva LIBOR.xlsx", 4)
Error en .jcall(rowCells[[ic]], "I", "getColumnIndex") :
RcallMethod: invalid object parameter
> res <-
2008 Feb 04
7
adding the mean and standard deviation to boxplots
Dear list,
How can I add the mean and standard deviation to each of the boxplots using the example provided in the boxplot function?
boxplot(len ~ dose, data = ToothGrowth,
boxwex = 0.25, at = 1:3 - 0.2,
subset = supp == "VC", col = "yellow",
main = "Guinea Pigs' Tooth Growth",
xlab = "Vitamin C dose mg",
2012 Sep 11
2
splines package
Hello all,
I have been working with b-splines and noted that the splines package is
not available in CRAN. Does any body know what happened with it?
Or, is there any package that replaces it?
Thank you
Felipe Parra
[[alternative HTML version deleted]]
2010 Dec 15
6
Numbers in a string
Hello, I have stings which have all sort of characters (numbers, letters,
punctuation marks, etc) I would like to stay only with the numbers in them,
does somebody know how to do this?
Thank you
Felipe Parra
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2010 Sep 26
4
Problem with unlist
Hello I want to unlist the attached element getting only the first element
in each element of the list. The last element of the list looks as this:
[[5065]]
[[5065]]$Pluv3Meses
[1] 274.4
[[5065]]$PluvMesesMedio
[1] 378.2667
[[5065]]$Pluv2UltimosMeses
[1] 23.33333
So I would like to get for each element of the list the element called
Pluv3Meses. The whole list has 5065 elements but when I try to
2010 Nov 22
4
Rexcel
Hello I am new to RExcel and I would like to run a source code form the
excel worksheet. I would like to run the following code
source("C:\\Quantil Aplicativos\\Genercauca\\BackwardSelectionNC.r")
from the excel wroksheet. Does anybody know how to do this?
Thank you
Felipe Parra
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2006 Jan 23
1
too-large notches in boxplot (PR #7690)
PR #7690 points out that if the confidence intervals (+/-1.58
IQR/sqrt(n)) in a boxplot with notch=TRUE are larger than the
hinges -- which is most likely to happen for small n and asymmetric
distributions -- the resulting plot is ugly, e.g.:
set.seed(1001)
npts <- 5
X <- rnorm(2*npts,rep(3:4,each=npts),sd=1)
f <- factor(rep(1:2,each=npts))
boxplot(X~f)
boxplot(X~f,notch=TRUE)
I can
2002 Jul 18
1
boxplot $conf
Hello R-Help,
Could anybody tell me how the boxplot-function calculates the upper
and
lower extremes of the notch contained in $conf which I assume is the
confidence interval? Is it reliable for data which is not normally
distributed? If not, how can I calculate and boxplot a specific
confidence interval for not normally distributed data in R (increasing
the sample size does not normalize the
2008 Aug 05
5
boxplot with average instead of median
I really like the ease of use with the boxplot command in R. I would
rather have a boxplot that shows the average value and the standard
deviation then the median value and the quartiles.
Is there a way to do this?
Chad Junkermeier, Graduate Student
Dept. of Physics
West Virginia University
PO Box 6315
210 Hodges Hall
Morgantown WV 26506-6315
phone: (304) 293-3442 ext. 1430
fax: (304)
2011 Feb 24
1
Boxplot not doing what I think it should
My box plot below is drawing its upper whisker all the way to the last point, instead of showing the point as an outlier. Am I misunderstanding, or is it a bug?
Help(boxplot) states for the parameter ?range? that ?this determines how far the plot whiskers extend out from the box. If range is positive, the whiskers extend to the most extreme data point which is no more than range times the
2005 Oct 04
6
boxplot statistics
I have read and reread the boxplot and the boxplot stats page, and I
still cannot understand how and what boxplot shows. I realize that
this might be due to me not knowing enough statistics, but anyway...
First, how does boxplot determine the size of the box? And is the line
inside the box the mean or the median (or something completely
different?) And how does it determine how long out the
2011 Apr 09
1
Memory allocation problem
Hello, I am runnning a program on R with a "big" number of simulations and
I am getting the following error:
Error: no se puede ubicar un vector de tamaƱo 443.3 Mb
I don't understand why because when I check the memory status in my pc I get
the following:
> memory.size()
[1] 676.3
> memory.size(T)
[1] 1124.69
> memory.limit()
[1] 4000
which should in theory allow to
2010 May 12
3
Calling a list element
Hello, i have the following list
strsplit(as.character(Elecciones$Municipios),"\\.")
[[1]]
[1] "ANTIOQUIA" "ABEJORRAL"
[[2]]
[1] "META" "ACACIAS"
[[3]]
[1] "CASANARE" "AGUAZUL"
[[4]]
and I would like to make a vector of the first element of each of the list
items, in this case ANTIOQUIA, META, CASANARE, etc . Do you know how
2006 Oct 09
1
boxplot, notches, etc.
Sorry to repost this, but it looks like it's getting
buried in r-help (originally posted October 5: my experience
says that if it hasn't been answered by then it won't be).
I wouldn't bother, but I'm worried that r-devel might be
better, *and* a previous e-mail of mine on the subject in
January also seemed to get buried.
Synopsis: boxplot notches look weird when notches
are
2013 May 15
1
Problem with convergence in optim
Hello to all,
I have been using an optim with the following call:
optim(param_ini,fun_errores2,Precio_mercado=Precio,anos_pagosE2=anos_pagos,control=list(maxit=10000,reltol=1e-16))
depending on the intial values I'm getting the same solution but once I get
the convergence message=10 (no convergence) and for the others I get
convergence message = 0
Solution1:
$par
beta1
2011 Mar 09
2
trunc function
Hello. I would like to know if there exists in R a function like trunc but
where i can choose how many decimal places can I stay with in the number I
have (sort of the same as the trunc function in excel). I would like, for
example if I have the number 0.974678 and I choose to stay with 3 decimal
places to have as ouput 0.974.
Thank you
Felipe Parra
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2006 Oct 05
1
unexpected behavior of boxplot(x, notch=TRUE, log="y")
A function I've been using for a while returned a surprising [to me,
given the data] error recently:
Error in plot.window(xlim, ylim, log, asp, ...) :
Logarithmic axis must have positive limits
After some digging I realized what was going on:
x <- c(10460.97, 10808.67, 29499.98, 1, 35818.62, 48535.59, 1, 1,
42512.1, 1627.39, 1, 7571.06, 21479.69, 25, 1, 16143.85, 12736.96,