Displaying 20 results from an estimated 5000 matches similar to: "Adding points on top of lines in xyplot"
2009 Sep 26
1
Lattice, stripplot (xyplot), plotting data with median line, numeric x-axis
All,
On p.52 of Deepayan Sarkar's Lattice book there is a nice plot of showing
residuals with median lines superimposed or various groups:
library("lattice")
stripplot(sqrt(abs(residuals(lm(yield~variety+year+site)))) ~ site,
data = barley, groups = year, jitter.data = TRUE, type = c("p", "a"), fun =
median)
Suppose we wanted to make a similar plot for a
2008 Feb 28
2
Replacing plot symbols w/ subject IDs in xyplot()
All,
How does one replace plot symbols with say subject IDs when using xyplot? Or
superimpose them next to plot symbols? I searched the archives under
various key words but haven't had much. Any suggestions or links much
appreciated. Sample code below.
David
junk.frm = data.frame(ID = rep(1:16, each = 2), x, y, z = rep(c("D", "P"),
16))
y = c( 0.4, 0.6, -0.1,
2005 Oct 03
2
"symbol print-name too long"
All,
I've coded a function and it works manually if I copy it line by line into R.
However, when I try to "load" (copy and paste) the entire function into
R, I get the following error after the listed line of code:
+ N.j.list = lapply(rej.hyp, length)
Error: symbol print-name too long
Does anyone you know what this error means? Strangely, when I copy the
same line verbatim
2008 Jun 26
3
Connecting lines across missing data points, xyplot
All,
I have data across 5 time points that I am graphing via xyplot, along with
error bars. For one of the variables I have missing data for two of the
time points. The code below is okay but I can't seem to get the lines to
connect across the missing time points. Does anyone now how to rectify
this?
Cheers,
David Afshartous
library(lattice)
## the data
junk = data.frame(
Visit =
2009 Sep 09
1
Xyplot, multi line title via main, all lines left justified
All,
Below is an xyplot plot with multiple panels and a title produced via main:
library("lattic")
data.ex = data.frame(y = rnorm(10), t = rep(1:5, 2), group = rep(c(0,1),
each = 5))
xyplot(y ~ t | as.factor(group), data = data.ex,
main = list("Put figure caption here xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
want this line left justified" ))
I must be mis-interpreting the
2008 Feb 26
2
Subsetting within xyplot()
All,
I'm having problems w/ a simple attempt to subset an xyplot.
The first plot below is a plot of y versus x for certain values of a third
categorical variable z. Now I'd like to further restrict this to certain
values of variable y. Neither of the two attempts below work. Any
suggestions much appreciated. (note: I don't want to merely use ylim since
I have a loess plot and I
2009 May 16
1
Lattice scales question: using "at" when log = TRUE
All,
I have a simple lattice plot where I have set log = TRUE for the y scale.
When I attempt to change the tick locations via the "at" argument within
scales, the supplied numeric vector is not followed. Any suggestions much
appreciated for the example below:
y = c(10^1.5, 10^2, 10^3, 10^2)
t = c(1,2,3,4)
xyplot(y ~ t, type = "b", scales = list(y = list(log = TRUE)))
##
2010 Jun 02
2
pdf function, resize xyplot plot automatically
All,
When saving plots to a pdf file via the pdf function, I would like to be
able to automatically expand the graphics device to achieve the same result
as when one does this manually (e.g., clicking the green expand button on
the upper left of the graph on Mac OS). Consider simple example below:
library("lattice")
foo.frm = data.frame(Subject = rep(c(1:4), each = 9), Y =
2007 Oct 12
2
Basic plot question: Figure 1.1 Pinheiro & Bates
All,
Sorry for overly simplistic question, but I can't seem to remember how to
create the basic plot shown in Figure 1.1 of Pinheiro & Bates (2004; p.4).
The y-axis delineates a factor (Rail) while the x-axis displays the
distribution of a continuous variable (time) according to each level of the
factor. Didn't see it in archives but perhaps I'm not searching on correct
key words,
2008 Jul 02
1
auto.key in xyplot in conjunction with panel.text
All,
I can't seem to get auto.key to work properly in an xyplot that is employing
panel.text. Specifically, I often change the default grouping colors then
use auto.key accordingly, but for some reason the same functionality isn't
working for this different type of plot. Any help much appreciated.
Cheers,
David
library("lattice")
dat = data.frame( Y = c(rnorm(18,1),
2007 Nov 29
1
Wireframe graph: black and white shading instead of color
All,
The code below produces a color 3D graph. I'd like to make it black and
white shading. I tried setting col.regions to FALSE but this just made it
completely white. I want the graph to look exactly as is, except black (or
grey) and white shading. Is this possible?
Cheers,
David
p.list = c(.01, .1, .25, .5, .75, .9)
cov.list = c(.2, .1, .05) ### leave out .01
X = rep(p.list, 3)
2008 Aug 27
1
Significant digits for checking values of variable?
All,
I'm witnessing some strange behavior when checking the values of one of my
variables. My guess is that it has something to do with the number of
significant digits being represented, but perhaps not as my variable was
created from other variables that only had one decimal place. See below.
I'm sure this is something basic, any suggestions much appreciated.
Cheers,
David
>
2006 Sep 07
5
augPred plot in nlme library
All,
I'm trying to create an augPred plot in the nlme library, similar to the
plot on
p.43 of Pinheiro & Bates (Mixed Effects Models in S and S-Plus) for
their Pixel data.
My data structure is the same as the example but I still get the error
msg below.
> comp.adj.UKV <- groupedData(adj.UKV ~ Time | Patient_no/Lisinopril,
data = comp.adj.UKV.frm, order.groups = F)
>
2006 Sep 23
4
plotting grouped data object
All,
I'd like to plot the main relationship of a grouped data
object for all levels of a factor in a single panel.
The sample code below creates a separate panel for each level
of the factor. I realize that this could be done in other ways,
but I'd like to do it via plotting the grouped data object.
thanks!
dave
z = rnorm(18, mean=0, sd=1)
x = rep(1:6, 3)
y =
2006 Sep 12
11
levels of factor when subsetting the factor
All,
When I take a subset of a factor the reduced factor still maintains all
the original levels of the factor when say forming the key in a plot.
The data is correct, but the variable still "remembers" the original
levels. See below for reproducible code. Does anyone know how to fix
this?
cheers,
dave
fact = as.factor(c(rep("A", 3),rep("B", 3), rep("C",
2006 Jun 14
3
appending
All,
In the function below I have 24 individuals and 6 calculations per
individual.
The 6 calculations are collected each time in a 1:24 loop when
calculating "delta".
I'd like to collect all 144 = 24*6 calculations in one vector
("delta.patient.comb").
The function works as is via indexing, but is there an easier way to
collect the measurements via appendinng the 6
2009 Jul 24
1
Aggregate, max and time of max
All,
For data consisting of serial measurements on subjects, one may use the
aggregate function to say compute the peak response for each subject for
each design condition. Is there a way to alter this or another one-liner to
also retain the time at which the peak occurred and thus avoid writing a
doing this via a loop? I suppose one could attempt to employ the split
function but that's
2008 Sep 11
1
plot of all.effects object
All,
I'm trying to plot an all.effects() object, as shown in the help for
all.effects and also Crawley's R book (p.178, 2007). The data has a repeated
measures structure, but I'm using all.effects for the simple lm() fit here.
Below is a reproducible example that yields the error message.
fm.ex = lm(dv ~ time.num*drug*X, data = dat.new)
fm.effects = all.effects(fm.ex, xlevels =
2005 Aug 20
2
diagonal matrices
Hello all,
I have matrices V.i of dimension n.i x n.i, where i = 1, ..., J, and the sum of n.i equals N. (and n.i ! = n.j)
goal: create one large matrix V, where V has matrices V.i on diagonal.
I create each matrix V.i in a for loop (1 to J), so each time I'd like to augment V with the
most recently calculated V.i, such that I'll have V after the final iteration of the for loop.
2006 Sep 06
1
Covariance/Correlation matrix for repeated measures data frame
All,
I have a repeated measures data frame and was wondering if the
covariance matrix can be
calculated via some created indexing or built-in R function.
Specifically, say there are 3 variables, where potassium concentration
is measured 6 times on each patient.
Patient number (discrete)
Time (1 to 6, discrete)
Potassium (continuous variable)
I want the covariance/correlation matrix for the