Displaying 20 results from an estimated 10000 matches similar to: "learning about panel functions in lattice"
2009 Feb 08
2
how to make this qq plot in lattice and/or ggplot2
Hi Group,
Here is some data.
p <- runif(1000) # sample data
groups <- rep(c(1,2),each=500) #conditioning variable
mydata <- cbind(p,groups)
n <- length(p)
u <- (1:n)/(n + 1) # uniform distribution reference for qqplot
logp <- -log(p,base=10)
logu <- -log(u,base=10)
qqplot(logp,logu)
How can I make the above qqplot in lattice and/or ggplot2. The sample
is uniform, and I take
2009 Oct 03
1
Problem using with panel.average in Lattice package
Hi,
I'm having a problem getting the panel.average function to work as I
expect it to in a lattice plot. I wish to draw lines between the
averages of groups of y-values at specific x-values. I have created a
dataset below which is similar to my real data. I also show an example
of using panel.loess in place of panel.average; it performs in a
manner similar to what I want panel.average to do
2008 Nov 19
2
ggplot2; dot plot, jitter, and error bars
With this data
x <- c(0,0,1,1,2,2)
y <- c(5,6,4,3,2,6)
lwr <- y-1
upr <- y+1
xlab <- c("Low","Low","Med","Med","High","High")
mydata <- data.frame(x,xlab,y,lwr,upr)
I would like to make a dot plot and use lwr and upr as error bars.
Above 0=Low. I would like there to be
some space between the 5 and the 6 corresponding
2006 Oct 05
2
xyplot
Hi,
for the data below:
time<-c(rep(1:10,5))
y<-time+rnorm(50,5,2)
subject<-c(rep('a',10),rep('b',10),rep('c',10),rep('d',10),rep('e',10))
group<-c(rep('A',30),rep('B',20))
df<-data.frame(subject,group,time,y)
I'd like to produce a plot with a single pannel with two loess curves one
for each group. the code below does
2009 Jan 24
2
how to prevent duplications of data within a loop
Hi All,
I had posted a question on a similar topic, but I think it was not
focused. I am posting a modification that I think better accomplishes
this.
I hope this is ok, and I apologize if it is not. :)
I am looping through variables and running several regressions. I have
reason to believe that the data is being duplicated because I have
been
monitoring the memory use on unix.
How can I avoid
2010 Jan 30
2
convert data frame of values into correlation matrix
Hi Group,
Consider a data frame like this:
mylabel1 <- rep(c("A","B","C"),each=3)
mylabel2 <- rep(c("A","B","C"),3)
corrs <- c(1,.8,.7,.8,1,.7,.7,.7,1)
myData <- data.frame(mylabel1,mylabel2,corrs)
myData
mylabel1 mylabel2 corrs
1 A A 1.0
2 A B 0.8
3 A C 0.7
4 B
2008 Sep 22
2
adding layers in ggplot2 (data and code included)
Here is some sample data:
mydata <- read.table(textConnection("Est Group Tri
0 0 4.639644
1 0 4.579189
2 0 4.590714
0 1 4.443696
1 1 4.588243
2 1 4.650505
0 2 4.296608
1 2 4.826036
2 2 4.765386"),header=TRUE);
closeAllConnections();
I can form two plots,
2010 Aug 10
1
partial match of one column in data frame to another character vector
Here is some data (dput output below)
> myData
id group
1 D599 A
2 002-0004 B
3 F01932 A
18 F16 B
19
2010 Sep 07
1
average columns of data frame corresponding to replicates
Hi Group,
I have a data frame below. Within this data frame there are samples
(columns) that are measured more than once. Samples are indicated by
"idx". So "id1" is present in columns 1, 3, and 5. Not every id is
repeated. I would like to create a new data frame so that the repeated
ids are averaged. For example, in the new data frame, columns 1, 3,
and 5 of the original
2010 Apr 29
3
control span in panel.loess in xyplot
Dear R gurus..
Is it possible to control span settings for different values of a grouping
variable, when using xyplot? an example code shown below
d=data.frame(x=rep(sample(1:5,rep=F),10),y=rnorm(50),z=rep(sample(LETTERS[1:2],rep=F),25))
xyplot(y~x,data=d,groups=z,panel=panel.superpose,panel.groups=panel.loess(span=c(2/3,
3/4,1/2))
or something like..
2008 Jan 25
1
increasing speed for permutations of glm
Dear R Programmers,
I am trying to run a Poisson regression on all pairs of variables in a data
set and
obtain the permutation distribution. The number of pairs is around 100000.
It seems my code will take weeks to run, unless I try something else.
Could you give me any suggestions on how to improve the speed of the
code below, or any general suggestions on how I may accomplish this task.
Thanks
2011 Nov 29
2
aggregate syntax for grouped column means
I am calculating the mean of each column grouped by the variable 'id'.
I do this using aggregate, data.table, and plyr. My aggregate results
do not match the other two, and I am trying to figure out what is
incorrect with my syntax. Any suggestions? Thanks.
Here is the data.
myData <- structure(list(var1 = c(31.59, 32.21, 31.78, 31.34, 31.61, 31.61,
30.59, 30.84, 30.98, 30.79, 30.79,
2012 Apr 19
1
Fwd: User defined panel functions in lattice
Hi ilai
Thank you for your suggestions.
I do not know what happened yesterday I must have omitted a few
changes out in going from R to email
and apologies for the double posting - I had troubles sending it as
my ISP gave a message of not being connected for email but was for the web
I was trying to get panel.Locfit to work in a number of situations.
1. Conditioned by Farm (3 panels) with 2
2001 Nov 28
3
trellis plot
Hi,
I'd like to plot 4 groups of data using xyplot and panel.superpose so
that the points are overlayed on a single plot. For each group of data
I'd also like a loess smoothed function (using panel.loess). I have
tried the following:
xyplot(series ~ time | gr, data=etable,
panel = function(x,y, ...) {
panel.superpose(x,y, ...)
panel.loess(x,y,span=.15)
2011 Jul 12
1
suggestions regarding reading in a messy file
I have a file in stata format, which I have read in, and I am trying
to create a text file. I have exported the data using various
delimiters, but I'm unable to read it back in. I originally read in
the file with:
library(foreign)
myData <- read.dta("mydata.dta")
I then exported it with write.table using comma, tab, and exclamation
marks as a delimiter.
When I was unable to
2009 Apr 10
1
png with ggplot on windows xp
Hi Group,
I posted this question on the ggplot list and was advised to try here
also. The code
below produces a plot as a png and pdf. The pdf looks great, and I cannot
make the png look this way. I've tried various combinations of
height, width, and dpi, but it has not worked out so
far. Any suggestions to make the png look like the pdf? I received a
response that
the problem does not occur
2011 Aug 24
2
data manipulation and summaries with few million rows
I have a data set with about 6 million rows and 50 columns. It is a
mixture of dates, factors, and numerics.
What I am trying to accomplish can be seen with the following
simplified data, which is given as dput output below.
> head(myData)
mydate gender mygroup id
1 2012-03-25 F A 1
2 2005-05-23 F B 2
3 2005-09-08 F B 2
4 2005-12-07 F B 2
2008 Oct 10
3
predicting from a local regression and plotting in lattice
Hi R community,
I'm running R 2.7.2 on Windows XP SP2.
I'm trying to (1) plot loess lines for each of my groupings using the same
color for each group; (2) plot loess predicted values.
The first part is easy:
data1 <-
data.frame(Names=c(rep("Jon",9),rep("Karl",9)),Measurements=c(2,4,16,25,36,49,64,81,100,1,2,5,12,17,21,45,54,67),PlotAt=c(1:9,1:9))
data2 <-
2010 May 17
1
suggestions/improvements for recoding strategy
I am recoding some data. Many values that should be 1.5 are recorded
as 1-2. Some example data and my solution is below. I am curious about
better approaches or any other suggestions. Thanks!
# example input data
myData <- read.table(textConnection("id, v1, v2, v3
a,1,2,3
b,1-2,,3-4
c,,3,4"),header=TRUE,sep=",")
closeAllConnections()
# the first column is IDs so remove
2009 Apr 20
3
what is R best for; what should one learn in addition to R
Hi,
I've been working with R for a couple of years, and I've
been able to get most of the things done that I needed (sometimes in
a roundabout way). A few experienced statisticians told me that
R is best for interactive data analysis, but for large-scale
computations, one needs something else.
I understand that this all depends on what you are trying to
accomplish, and R offers many ways