Displaying 17 results from an estimated 17 matches similar to: "could not find function "hmatplot""
2009 Apr 09
3
Multiple Hexbinplots in 2 columns with a Single Categorical Variable
Dear Ladies and Gentlemen,
I have a fairly large database (N=13,000) and a single main categorical
discriminator between the groups.
I want to look at the time course of a number of continuous biochemical
variables over chronologic age.
Therefore I believe I need to prepare hexbinplots in two columns with simple
regression lines in them (with useOuterStrips (in library(latticeExtra) if
2013 Jan 30
0
texture mapping images on the faces of a cuboid with rgl
Hi,
I am interested in mapping 6 different images on the faces of a cube. I found the full code for doing this here :
http://rwiki.sciviews.org/doku.php?id=graph_gallery:cube
But I am unable to adapt the code for my purpose. I would appreciate it if I could get some help on the following points :
1. My images are jpeg images with dimensions of 1936*2584*3. Must I seperately process the grey and
2009 Jun 03
1
Would like to add this to example for plotmath. Can you help?
Greetings:
I would like comments on this example and after fixing it up, I need
help from someone who has access to insert this in R's help page for
plotmath.
I uploaded a drawing
http://pj.freefaculty.org/R/Normal-2009.pdf
that is created by the following code
http://pj.freefaculty.org/R/Normal1_2009_plotmathExample.R
This will be a good addition to the plotmath help page/example.
2006 Nov 07
3
have I an actual matrix?
Hi all!
I do hope question from newcomers are wellcome here! Thanks in advance.
Trying to catch up and to acquired the needed background to easily
read R documents it is being a bit hard to me to get into the
required concepts to deal with data.
I am trying to get data from a MySQL database and plotting it with
barplot. Here the code...
library(RMySQL)
con <- dbConnect(dbDriver
2011 Apr 20
2
survexp with weights
Hello,
I probably have a syntax error in trying to generate an expected
survival curve from a weighted cox model, but I can't see it. I used
the help sample code to generate a weighted model, with the addition
of a "weights=albumin" argument (I only chose albumin because it had
no missing values, not because of any real relevance). Below are my
code with the resulting error
2009 Jul 13
0
pbc data
Hi there,
Can anyone please help me because I am going to get crazy with the pbc data set. I just want to apply simple cox regression in the data set. I am a beginner in R but I don't think I am doing anything wrong.
I have the book of Fleming and Harrington 1990. I perform cox regression by typing:
out<- coxph(Surv(times/365,status)~log(bili)+log(proth)+edema+log(albumin)+age)
out
2008 Nov 24
1
Discrepancy in the PBC data set
The data set in R is wrong. I've found mistakes on 2 lines in a quick look.
I don't know if the data is incorrect in the Appendix of Fleming and
Harrington as well (someone seems to have borrowed my copy), which is where the
data set appears to have been taken from, given all the "-9" codes in it. (Note,
Tom Fleming originally got the data from me, so I'm fairly
2011 Jul 08
4
Using t tests
Dear Sir,
I am doing some work on a population of patients. About half of them are
admitted into hospital with albumin levels less than 33. The other half have
albumin levels greater than 33, so I stratify them into 2 groups, x and y
respectively.
I suspect that the average length of stay in hospital for the group of
patients (x) with albumin levels less than 33 is greater than those
2003 Aug 04
1
coxph and frailty
Hi:
I have a few clarification questions about the elements returned by
the coxph function used in conjuction with a frailty term.
I create the following group variable:
group <- NULL
group[id<50] <- 1
group[id>=50 & id<100] <- 2
group[id>=100 & id<150] <- 3
group[id>=150 & id<200] <- 4
group[id>=200 & id<250] <- 5
group[id>=250
2006 Sep 03
2
Running cox models
Hi,
I'm reading van Belle et al "Biostatistics" and trying to run a cox test using
a dataset from:
http://faculty.washington.edu/~heagerty/Books/Biostatistics/chapter16.html
(Primary Biliary Cirrhosis data link at top of the page),
I'm using the following code:
--------------- start of code
library(survival)
liver <-
2011 May 28
0
how to train ksvm with spectral kernel (kernlab) in caret?
Hello all,
I would like to use the train function from the caret package to
train a svm with a spectral kernel from the kernlab package. Sadly
a svm with spectral kernel is not among the many methods in caret...
using caret to train svmRadial:
------------------
library(caret)
library(kernlab)
data(iris)
TrainData<- iris[,1:4]
TrainClasses<- iris[,5]
set.seed(2)
2008 Mar 02
0
new to latex to pdf
Dear All,
I'm trying to teach myself latex along with the latex function in Hmisc
and have hit a roadblock that I can't seem to get around. I'd greatly
appreciate any pointers.
I'm running R 2.6.0 on Windows XP and have Miktex 2.7 installed.
I've reproduced the code below, taken from Frank Harrell's latexsummary
introduction. My question relates to getting a pdf
2008 Sep 29
0
nomogram function (design library)
Dear colleagues,
I hope someone can help me with my problem.
I have fitted a cox model with the following syntax:
# cox01def <-cph(Surv(TEVENT,EVENT) ~ ifelse(AGE>50, (AGE-50)^2,0) +
BMI +
# HDL+DIABETES +HISTCAR2 + log(CREAT)+
as.factor(ALBUMIN)+STENOSIS+IMT,data # = XC, x=T, y=T, surv=T) *1
Furthermore I have estimated my beta's also with a Lasso method -
Coxpath ( from
2004 Oct 15
2
edit plots from the ADE4 package
Dear R-Help
i have a newbie question, how edit size fonts and colors in the plots (scatter.acm or dudi.acm function) of multiple correspondence analysis in the ADE4 Package?
thanks?
Rafael Gutierrez
Estad??stico
Unidad de Tecnolog??a Cerro Matoso S.A.
Tel. 4-7723350 Fax. 4-7723236
*************************************************************************************************
Este correo
2006 May 03
2
mca id numbers
Is it possible to make disappear the id numbers from scatter.dudi (mc
analysis) ?
a <- as.factor(c(1, 2, 3, 2, 1))
b <- as.factor(c(3, 2, 3, 1, 1))
x <- as.factor(c(1, 2, 2, 1, 3))
y <- as.factor(c(2, 2, 3, 1, 1))
dat <- data.frame(a=a, b=b,x=x,y=y)
summary(dat)
dat
require(ade4)
dat.acm <- dudi.acm(dat, scann = FALSE, nf = 2)
scatter.dudi(dat.acm)
Thank you very much !
2004 Nov 04
2
biplot drawing conc ellipses
Is there an option to draw concentration ellipses in biplots ? It seems
really nice to summarize large number of points of each group.
Cheers../ Murli
2008 Oct 15
0
R-help Digest, Vol 67, Issue 31
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