Displaying 20 results from an estimated 2000 matches similar to: "Superposed histograms"
2003 Jul 30
2
Plotting a function with curve()
Why does
> curve(function(y) y^2, from=0,to=1)
not work, whereas
> myf <- function(y) y^2
> curve(myf, from=0,to=1)
work?
For the former, I get the error message
Error in curve(function(y) y^2, from = 0, to = 1) :
'expr' must be a function or an expression containing 'x'
I'm using R1.7.0 under Windows XP.
Damon Wischik.
2003 Mar 10
2
Biplots
I want to plot biplots. I have seen the function biplot, but there are
some extra features I would like, that I do not know how to achieve.
1. My observations, and my variables, fall into groups. Is there a way to,
say, plot the observations in several different colours, according to
which group the observation falls into? Similarly with the variables? I am
used to the lattice idiom, in which one
2003 Dec 17
6
Factor names & levels
When I alter the levels of a factor, why does it alter the names too?
f <- factor(c(A="one",B="two",C="one",D="one",E="three"),
levels=c("one","two","three"))
names(f)
-- gives [1] "A" "B" "C" "D" "E"
levels(f) <-
2003 Mar 02
2
ESS+R not closing gracefully
I am having trouble with ESS+R. I don't know if it is an ESS
problem or an R problem, so I'm posting to this mailing list in
the first instance.
I am using R 1.6.2, Windows XP (latest updates installed), XEmacs 21.4,
and ESS 5.1.21. I have experienced the same problem under Windows 2000 and
recent versions of Emacs and ESS (though my current Windows XP
installation is from scratch, and
2004 Apr 22
3
Trouble with HTML search engine
There have been a number of posts to this list by people having trouble
with the HTML search engine. Often these troubles are caused by incorrect
setups (user hasn't installed Java properly, or Java is disabled, or
Javascript is disabled). Sometimes the trouble persists even when Java is
installed properly.
I have written an alternative HTML search engine, which is based on
Javascript rather
2003 Jul 26
1
A model for disease progression
I would be grateful for advice about the following problem. It's not
directly R-related, but I'm hoping that R will help me analyse the
following data.
I have a table which indicates the progression of a certain age-related
disease. At a certain point in time, a population was sampled; and I have
measurements for the age of each individual, and their disease stage.
(Disease stage is an
2003 Sep 04
3
Overlaying graphs
----- Original Message -----
From: "Richard A. O'Keefe" <ok at cs.otago.ac.nz>
To: <paul at datavore.com>
Sent: Thursday, September 04, 2003 2:56 AM
Subject: Re: [R] Overlaying graphs
> I do not know how to overlay the curve graphic on top of hist graphic.
>
> Do you know about the "add=TRUE" option for plot()?
>
> I am hoping to show visually
2003 Feb 01
1
Trouble with optim
I am having trouble with optim. It claims to have converged to a minimum,
yet it has in the course of the optimization visited many points which are
closer to optimal. I would be grateful for any explanation of this
behaviour.
I'm trying to estimate the parameters in the model
X ~ Binomial(1,p) * NegBin(mu,theta).
So I define a log likelihood function, and invoke optim thus:
o <- optim
2003 Jan 25
7
Plotting coloured histograms...
Hi, I am having some trouble trying to plot a histogram in more than one
colour. What I want to do is, plot two vectors in the same histogram, but
with different colours, for instance:
> x <- rnorm(1000,20,4);
> y <- rnorm(1000,10,2);
Then I'd like to have x and y ploted on the same hist (I can do that
already doing w <- c(x,y) then hist(w)) but the bars
2007 Jan 31
4
possible spam alert
The last two times I have originated message threads on R or
Bioconductor I have received the message included below from someone
named Patrick Connolly. Both times I was the originator of the message
thread and used what I thought was a unique subject line that explained
as best I could what my question was. Patrick seems to be implying that
I am abusing the R and BioC help newsgroups in this
2009 Aug 01
2
xyplot: superpose 2 time series with different time intervals
I could use some advice regarding xyplot.
I've got 2 time series. Both cover approximately the same period of
time (ie, 1940 to 2009). But one series has annual data and the other
has monthly data. One refers to university enrollment; the other to
unemployment rates. Both are currently in the same data frame.
I'd like to use the monthly times series as a light grayscale
background for a
2009 Jul 31
1
superpose 2 time series with different time intervals
I could use some advice.
I've got 2 time series. Both cover approximately the same period of
time (ie, 1940 to 2009). But one series has annual data and the other
has monthly data. One refers to university enrollment; the other to
unemployment rates. Both are currently in the same data frame.
I'd like to use the monthly times series as a light grayscale
background for a plot of the
2007 Aug 11
1
xyplot() with segments() superposed?
In the hypothetical example below, how do I add two segments() into
the two panels, respectively? Say segments(x0=5, y0=10, x1=5, y1=20)
on the left and segments(x0=15, y0=-10, x1=15, y1=-2) on the right?
Many thanks in advance,
Yuelin Li.
ps. part of the code came from a solution given by Deepayan Sarkar.
-------------------
library(lattice)
set.seed(12345)
x <- 0:20
y.male.obs <- - 1.2
2003 Jan 17
2
Negative Binomial modelling
I have some data which I am trying to fit with a negative binomial
distribution. I have found the glm.nb function from MASS.
I have reason to believe that the mean parameter mu depends on
certain factors, and that the shape parameter theta depends on
others.
If, say, the factors are P and Q, it might be that
mu ~ P:Q and theta ~ P
(where mu ~ P:Q means that mu is a function of the pair (P,Q))
2003 Jan 20
2
Adding reference lines to xyplot
I'm trying to add a set of reference lines to a multipanel xyplot
xyplot(y ~ x | Visit,
panel = function(x, y, ...){
panel.xyplot(x, y, ...)
abline(v = c(0.5, 1))
})
However, the reference lines are different for different visits. For
example, for the first 2 visits, I'd like vertical lines at x = 0.5 and 1.
For visits 3 and four, I'd like vertical lines at x = 1 and 1.5. I can
2007 Sep 05
2
compatibility with Tripps SMART/OMNI/OMNISMART ?
I've having trouble understanding the NUT compatibility page.
Is it compatible with the OMNISMART300? Or the OMNI900LCD?
The compatibility page said for instance
SMART550 -- tripplite_usb
SmartUPS -- tripplite
OMNI650LCD -- usbhid_ups
so I'm not sure if an OMNISMART300 is like a Smart, or a SMART, or an OMNI,
or even if it's supported at all.
Thanks in advance for any help!
2008 Jan 29
2
how do i creat multiple back to back histograms?
Een ingesloten tekst met niet-gespecificeerde tekenset is
van het bericht gescrubt ...
Naam: niet beschikbaar
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2007 Apr 17
2
format() applied to an NA character string (PR#9616)
I get strange results when I try to format() an NA character string.
> x <- 'sometext'
> x[1] <- NA
> format(NA, width=32) # displays sensibly, right-justified
> format(x,width=32) # displays sensibly, left-justified
> format(x,width=33) # displays ""
> format(x,width=36) # R exits abnormally with code 5
> version
platform i386-pc-mingw32
2003 Jan 27
0
Please begin a new subject if your post isn't a response to a previous one
Most mornings, I have over a screenful of messages mostly from R-help
and it's very useful to have them threaded. However, the usefulness
of threading is lost when posters reply to a message and then change
the subject instead of creating a new message.
People who don't have a mail client that can display email in threads
are probably unaware that this sort of thing can happen in ones
2005 Jan 04
1
R help search and Java(tm)?
I found this great search
source("http://www.statslab.cam.ac.uk/~djw1005/Stats/Interests/search.R")
helpHTML()
Has (or will) this become the standard search method?
Is R 'Free Software'? The dependence on Java seems a bit of a pain for
'freeness'.
Did the above make it into CRAN?
Cheers,
Dan.