Displaying 20 results from an estimated 5000 matches similar to: "Plotcorr: colour the ellipses to emphasize the differences"
2004 Oct 17
1
FW: Plotcorr: colour the ellipses to emphasize the differences
-----Original Message-----
From: Duncan Murdoch [mailto:murdoch at stats.uwo.ca]
Sent: ned 2004-10-17 15:34
To: Gorjanc Gregor
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] Plotcorr: colour the ellipses to emphasize the differences
On Sun, 17 Oct 2004 02:51:58 +0200, "Gorjanc Gregor"
<Gregor.Gorjanc at bfro.uni-lj.si> wrote:
[removed old stuff]
>>I would also like to
2002 Apr 17
1
Using strwidth before plotting
In the plotcorr() function in the ellipse package, I want to position
things differently depending on the size of the labels. I can use
strwidth to find out the length of the labels, but only when there's a
plot window open: it won't open one.
Question: What function call says: make sure there's a window open
(i.e. do what plot() does before it starts plotting)?
I don't think
2007 Oct 01
4
how to plot a graph with different pch
I am trying to plot a graph but the points on the graph should be
different symbols and colors. It should represent what is in the legend.
I tried using the points command but this does not work. Is there
another command in R that would allow me to use different symbols and
colors for the points?
Thank you kindly.
data(mtcars)
plot(mtcars$wt,mtcars$mpg,xlab= "Weight(lbs/1000)",
2011 Dec 13
1
How to add points to two plots parallelly ?
I am looking for ways to add points to three different plots in parallel.
I generate three scatter plots and name them as s3d1, s3d2 and s3d3
s3d1<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
s3d2<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
2020 Apr 16
2
suggestion: "." in [lsv]apply()
I'm sure this exists elsewhere, but, as a trade-off, could you achieve
what you want with a separate helper function F(expr) that constructs
the function you want to pass to [lsv]apply()? Something that would
allow you to write:
sapply(split(mtcars, mtcars$cyl), F(summary(lm(mpg ~ wt,.))$r.squared))
Such an F() function would apply elsewhere too.
/Henrik
On Thu, Apr 16, 2020 at 9:30 AM
2012 Mar 15
2
Ggplot barchart drops factor levels: how to show them with zero counts?
Hello,
When plotting a barchart with ggplot it drops the levels of the factor for
which no counts are available.
For example:
library(ggplot)
mtcars$cyl<-factor(mtcars$cyl)
ggplot(mtcars[!mtcars$cyl==4,], aes(cyl))+geom_bar()
levels(mtcars[!mtcars$cyl==4,])
This shows my problem. Because no counts are available for factorlevel '4',
the label 4 dissapears from the plot. However, I
2010 Mar 10
1
ggplot2: Changing colour scheme for bar plot filling?
Hello,
I'd like to sitch to a monochrome/bw color-palette for the filling of
geom_bar-bars (produced via "qplot" as in the example below). Hours of
googling didn't yield anything useful, so I thought, I'd just ask ...
Thanks, Joh
library(ggplot2)
qplot(factor(cyl), data=mtcars, geom="bar", fill=factor(cyl))
2013 Apr 12
3
Why copying columns of a data.frame becomes numeric?
Dear list,
I want the 1st, 2nd, 5th, and 6th columns of mtcars. After copying them,
the columns become numeric class rather than data frame.
But, when I copy rows, they data frame retains its class. Why is this? I
don't see why copying rows vs columns is so different.
> class(mtcars)
[1] "data.frame"
> head(mtcars)
mpg cyl disp hp drat wt qsec vs
2012 Feb 17
1
Dataframe subset - why doesn't this work?
data(mtcars)
mtcars[rownames(mtcars)!="Valiant",] # fails
mtcars[list(rownames(mtcars))!="Valiant",] # runs but I am not getting the expected result
With the latter statement, I expected all rows except the one where the name is "Valiant".
I must have got something simple wrong; what is it?
Thanks.
[[alternative HTML version deleted]]
2017 Aug 29
2
DBI::dbWriteTable syntax error apparently from quotes
I have been successfully using RODBC for a long time (years) to connect to
MS SQL Server from R.
This week I wanted to try using odbc but I am seeing some problems which
may be related to how I set up my driver and/or connection.
The dbWriteTable manual page gives as an example command:
dbWriteTable( pDB$con, "mtcars", mtcars[1:5,])
When I try this I get the following error
Error:
2017 Aug 16
1
Bias-corrected percentile confidence intervals
Hi folks,
I'm trying to estimate bias-corrected percentile (BCP) confidence
intervals on a vector from a simple for loop used for resampling. I am
attempting to follow steps in Manly, B. 1998. Randomization, bootstrap
and monte carlo methods in biology. 2nd edition., p. 48. PDF of the
approach/steps should be available here:
https://wyocoopunit.box.com/s/9vm4vgmbx5h7um809bvg6u7wr392v6i9
If
2000 Jan 04
1
Alternative to cxy in R
good morning to the R-help list!,
I would like to ask if there is an alternative to the S ploting
parameter "cxy" in R. I am trying to port some S code to R that makes use
of this "cxy" parameter to scale the graphics, and I don't find this
parameter in help(par).
thank you,
IOsu
-------------------------------------------------------------------------------
Jes?s
2020 Apr 16
6
suggestion: "." in [lsv]apply()
Hi,
I would like to make a suggestion for a small syntactic modification of
FUN argument in the family of functions [lsv]apply(). The idea is to
allow one-liner expressions without typing "function(item) {...}" to
surround them. The argument to the anonymous function is simply referred
as ".". Let take an example. With this new feature, the following call
2010 Nov 30
3
pca analysis: extract rotated scores?
Dear all
I'm unable to find an example of extracting the rotated scores of a
principal components analysis. I can do this easily for the un-rotated
version.
data(mtcars)
.PC <- princomp(~am+carb+cyl+disp+drat+gear+hp+mpg, cor=TRUE, data=mtcars)
unclass(loadings(.PC)) # component loadings
summary(.PC) # proportions of variance
mtcars$PC1 <- .PC$scores[,1] # extract un-rotated scores of
2020 Apr 16
2
suggestion: "." in [lsv]apply()
Simon,
Thanks for replying. In what follows I won't try to argue (I understood
that you find this a bad idea) but I would like to make clearer some of
your point for me (and may be for others).
Le 16/04/2020 ? 16:48, Simon Urbanek a ?crit?:
> Serguei,
>> On 17/04/2020, at 2:24 AM, Sokol Serguei <sokol at insa-toulouse.fr>
>> wrote: Hi, I would like to make a
2017 Mar 26
1
Documentation of model.frame() and get_all_vars()
Hi everyone,
This is about documentation for the model.frame() page. The
get_all_vars() function (added in R 2.5.0) is a great addition, but
the behavior of its '...' argument is different from that of
model.frame() with which it is documented and this creates ambiguity.
The current docs read:
\item{\dots}{further arguments such as \code{data}, \code{na.action},
\code{subset}. Any
2010 Aug 04
3
retrieve name of an object?
Dear all
Is there an easier way to retrieve the name of an object? For example,
> tmp <- 1:10
> as.character(quote(tmp))
[1] "tmp"
> as.character(quote(mtcars$cyl))
[1] "$" "mtcars" "cyl"
> as.character(quote(mtcars$cyl))[3]
[1] "cyl"
The last call more than anything seems a hack. Is there a better way?
Thank you
Liviu
2013 May 17
2
Selecting A List of Columns
Dear R Helpers,
I need help with a slightly unusual situation in which I am trying to
select some columns from a data frame. I know how to use the subset
statement with column names as in:
x=as.data.frame(matrix(c(1,2,3,
1,2,3,
1,2,2,
1,2,2,
1,1,1),ncol=3,byrow=T))
all.cols<-colnames(x)
to.keep<-all.cols[1:2]
Kept<-subset(x,select=to.keep)
Kept
2017 Aug 29
0
DBI::dbWriteTable syntax error apparently from quotes
Double quotes are not legal SQL syntax. Use single quotes.
--
Sent from my phone. Please excuse my brevity.
On August 29, 2017 2:21:44 AM PDT, Eric Berger <ericjberger at gmail.com> wrote:
>I have been successfully using RODBC for a long time (years) to connect
>to
>MS SQL Server from R.
>This week I wanted to try using odbc but I am seeing some problems
>which
>may be
2020 Apr 20
1
suggestion: "." in [lsv]apply()
Le 19/04/2020 ? 20:46, Gabor Grothendieck a ?crit?:
> You can get pretty close to that already using fn$ in the gsubfn package:
>> library(gsubfn) fn$sapply(split(mtcars, mtcars$cyl), x ~
>> summary(lm(mpg ~ wt, x))$r.squared)
> 4 6 8 0.5086326 0.4645102 0.4229655
Right, I thought about similar syntax but this implementation has
similar flaws pointed by Simon, i.e. it reduces