Displaying 20 results from an estimated 11000 matches similar to: "Boxplot in R"
2008 Sep 02
3
boxplot - label outliers
Hi All-
I have 24 boxplots on one graph. I do not have the whiskers extending
to the outliers, but I would like to label the maximum value of each
outlier above the whiskers. I have the stats but am having trouble
figuring out how to label the whiskers.
Any suggestions would be great!
sherri
2010 Aug 05
2
colour of label points on a boxplot
Hi all,
I have 6 datasets(dataframes Assem_ContigsLen7 through all_ContigsLen12)
containing 3 columns (contig_id, contig_length, read_count).
Each dataset is composed of 3 types of contigs (assemblies of genomic
fragments), 1- all Bacterial fragments, 2 - all Viral fragments, 3 -
mixed fragments.
I identified the type of contig through a merge with another table with
just contig_id and
2000 Dec 10
1
more boxplot questions
Hello,
I have a couple more questions about boxplots. In the books I've read on
statistics (I'm not a statistics expert but just a poor engineer trying
to help his wife with the analysis of the data she gathered for her
medieval history PhD), I seen two kinds of box plots: one using
quartiles to determine the height of the rectangles and whiskers which
is what the standard R boxplot does,
2008 Jan 25
1
accessing the indices of outliers in a data frame boxplot
I have a data frame containing columns which are factors. I use this
to make boxplots for the data, with one box per factor. I would now
like to get at the data in the data frame which corresponds to the
outliers. I have so far found the $out, which gives "the values of any
data points which lie beyond the extremes of the whiskers", but I
haven't found anything which will let me get
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
2001 Apr 19
1
boxplot()
Dear all,
I am comparing:
> summary(boxplot(c(1,2,3,4,5,6,7,8,50),range=1.5))
Length Class Mode
stats 5 -none- numeric
n 1 -none- numeric
conf 2 -none- numeric
out 1 -none- numeric
^^^^^
group 1 -none- numeric
names 1 -none- character
with:
> summary(boxplot(c(1,2,3,4,5,6,7,8,50),range=0))
Length Class Mode
stats 5 -none- numeric
n
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
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
2012 Jan 29
1
Modifying whiskers in boxplots?
Hello,
I know this has been covered on here before, but as a complete novice, I
need a little more guidance. I would like to produce boxplots with the
whiskers extending to the 10 and 90th percentiles. I found this code:
myboxplot.stats <- function (x, coef = NULL, do.conf = TRUE, do.out =
TRUE)
{
nna <- !is.na(x)
n <- sum(nna)
stats <- quantile(x, c(.1,.25,.5,.75,.9), na.rm
2001 Nov 25
2
Boxplots using percentiles?
The standard R boxplot appears to use quartiles to determine the height of
the rectangles and a range parameter - RNG - (default=1.5 I think) that
determines the length of the whiskers as <= RNG x Interquartile Range. Is
it possible to instead define the range as extending to the 95th percentile?
If so, how would this be done?
nb, I'm plotting multiple boxplots on a single chart so a
2005 Dec 01
8
Impaired boxplot functionality - mean instead of median
Hello to all users and wizards.
I am regulary using 'boxplot' function or its analogue - 'bwplot' from
the 'lattice' library. But they are, as far as I understand, totally
flawed in functionality: they miss ability to select what they would
draw 'in the middle' - median, mean. What the box means - standard
error, 90% or something else. What the whiskers mean -
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
2006 Mar 16
2
french secondary boxplot
bonjour,
i'm a mathematic teacher and i have a question for R-developers :
is it possible to have (in the future) a boxplot with whiskers from
the first decile to the ninth decile, as usual in secondary french
schools... by example : boxplot(serie,range=-1) for french boxplot ?
cordialement,
jean-pierre
lyc?e jean zay
orl?ans, france
http://mathazay.free.fr/spip/
2006 Apr 02
2
Boxplot
bonjour,
je voudrais savoir s'il serait possible de sugg?rer aux d?veloppeurs
de R de proposer une option suppl?mentaire pour les moustaches, ?
savoir les placer sur d1 et d9 comme c'est pr?conis? dans les
programmes du secondaire en France, option du style boxplot
(serie,range=91) par exemple...
i would like to know if it is possible to have (with the agrement of
developpers)
2012 Mar 22
2
how to avoid grid overlapping in a boxplot
Given the following chart: i.e. a boxplot with a grid
boxplot(x~y)
grid(nx=NA,ny=NULL)
my question: how to avoid the overlapping of boxes (and whiskers) by grid
lines?
thank you for any help pointing me in the right direction
max
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Sent from the R help mailing list
2003 May 11
2
what does boxplot draw?
Dear r-help,
Unfortunately I cannot find in the documentation what determines
ranges of a 'box' in the box-and-whisker plot.
It is said in "Simple R" (http://www.math.csi.cuny.edu/Statistics/R/simpleR)
that they are 1st and 3rd Qus usually.
I tried to add to boxplot lines with (quantile(x,probs=0.25)), but
lines do not coincide with edges of boxes.
2012 Sep 29
3
Removing lower whisker in boxplot to see the effects of the high values
Good Afternoon-
I was wanting to alter the boxplot to remove the lower whisker, both the
whisker line and staple just on the lower end. Is there a way to do this?
As my code is currently:
boxplot(log_loads~ind,data=nfmaum, horizontal=TRUE, notch=T, outline=FALSE,
whisker=0, main="Maumee River Near Future Climate Scenarios", ylab="Log
Load",xlab="Climate Scenarios")
2004 Aug 24
2
Boxplot across levels of a factor
Hello,
I have a data-frame in which one-column is a factor:
> str(data);
`data.frame': 194 obs. of 8 variables:
$ Type : Factor w/ 3 levels "Nuclear-Rec..",..: 1 2 2 2 2 2 2 2 2 2
...
$ Locus : num 0.000571 0.004000 0.001429 0.004857 0.007429 ...
And I'd like to make a boxplot of the data$Locus values, where each level of
the factor gets its own
2009 Aug 20
2
boxplot with log="y" and values starting at 0
Hi,
I'm working with a data.frame containing values between 0 and 22000.
Most of the values are actually between 0 and 50 and the high ones are
outliers.
I want to generate a boxplot and since the outliers are extremely
high, I need to scale the y scale logarithmically. Otherwise one
wouldn't really see the boxes of the boxplot.
boxplot(dat, log="y", ylim=c(0,
2006 Nov 12
2
Unexpected behavior in boxplot
When plotting using the cex.axis argument to boxplot(), the size of the
plotting symbols beyond the whiskers of the boxplot are being changes.
Example:
par(mfrow=c(2,1))
boxplot(c(rnorm(10), 10), horizontal=TRUE, main="Test", las=2, cex.axis=2)
boxplot(c(rnorm(10), 10), horizontal=TRUE, main="Test", las=2, cex.axis=1)
This is from the following line in bxp()