a separate keyboard. It does not
work with the virtual keyboard. The same is true with android tablets.
Frans
2014-04-12 3:38 GMT+02:00 Roy Mendelssohn roy.mendelss...@noaa.gov:
GIYF - Google VPN and iPad.
-Roy
On Apr 11, 2014, at 6:34 PM, John Sorkin jsor...@grecc.umaryland.edu
I bemoan the fact that I can not run R or Rstudio on my iPad. A possible work
around would be to set up a server (probably under Linux), and get the server
to present a web page that to would allow me to run R on the server. I have
searched the web for a clear, simple answer on how to do this
, John Sorkin
jsor...@grecc.umaryland.edu wrote:
I bemoan the fact that I can not run R or Rstudio on my iPad.
I feel like this is something I'm not missing much, at all, but
different strokes ... :-)
A possible work around would be to set up a server (probably under
Linux), and get the server
be a very easy way for you to see if taking one of the 2
avenues of setting up RStudio Server yourself would be worth the pain.
HTH,
-steve
On Fri, Apr 11, 2014 at 2:34 PM, John Sorkin
jsor...@grecc.umaryland.edu wrote:
Steve,
Thank you for your help.
I have seen the material you have sent me
support quite enough html to get a fully
functional Rstudio interface - almost everything works but you can't
type anything :/ It would be possible to fix this, but fundamentally
we don't believe that the Rstudio interface is the right choice for an
ipad.
Hadley
On Fri, Apr 11, 2014 at 5:00 PM, John
, John Sorkin
jsor...@grecc.umaryland.edu wrote:
Hadley,
First, thank you for replying to my question. Are you saying that the iPad
browser will not allow me to type the character string :/ into a browser
window? I am not sure exactly what you are trying to tell me. Please forgive
my lack
call phone number above prior to faxing)
David Winsemius dwinsem...@comcast.net 4/11/2014 9:06 PM
On Apr 11, 2014, at 2:00 PM, John Sorkin wrote:
I bemoan the fact that I can not run R or Rstudio on my iPad. A possible work
around would be to set up a server (probably under Linux), and get
R 3.0.0 or RStudio 0.98.490
Windows 7 (or Linux Mint)
Is there any easy way to run an R program and have it produce text output in a
file along with any graphs that the code produces? I know I can run the program
and paste the graphs into the output however doing this is rather time
I would like to take a parameter passed to a function as a text string. I don't
want the parameter evaluated, I want it uses exactly as passed,
doit - function(data) {
cat(This function is using values from the data frame ,data,\n)
}
mydata - data.frame(x = c(1,2,3), y=c(3,2,1))
doit(mydata)
I am running R under Linux Mint 15 and trying to download and install
nlme. During the download I get an error message:
Warning message:
In install.packages(nlme) :
installation of package ‘nlme’ had non-zero exit status
When I try to load the package, I get an error message
library(nlme)
On Tue, 21 Jan 2014, John Sorkin wrote:
I am running R under Linux Mint 15 and trying to download and
install
nlme. During the download I get an error message:
Warning message:
In install.packages(nlme) :
installation of package ‘nlme’ had non-zero exit status
When I try to load
I hope the code below will show you how to co what you want to do.
John
Elder1 - data.frame(
ID=c(ID1,ID2,ID3,ID6,ID8),
age=c(38,35,,NA,NA))
Elder1
# The age variable is a factor, we want it to be numeric
class(Elder1[,'age'])
# Convert factor to a numeric value.
Can someone provide suggestions about how to best set up an R server? I would
like to be able to run R on my IPad. It sounds like the only way to do this is
to have the IPad access an R server. The server will be at my home, connected
to the internet via my cable company (comcast). I don't yet
Fortune?
Where did lost variables go, with example
Sent from my iPhone
On Dec 31, 2013, at 7:36 PM, David Parkhurst parkh...@imap.iu.edu
parkh...@imap.iu.edu wrote:
Thank you. I've tried what you're suggesting, at an earlier suggestion
from another respondent, and I don't find my
Please, everyone civility is a positive virtue
J
Sent from my iPhone
On Dec 25, 2013, at 7:11 PM, Jeff Newmiller jdnew...@dcn.davis.ca.us
jdnew...@dcn.davis.ca.us wrote:
Out of context, I would agree with you. However, I stand behind it as regards
the original question... the OP should
Mailing list vs. stack overflow, I have no opinion, but
beginners list NO! I was a beginner at one time and the
mailing list worked just fine. I see no reason to divide our
efforts across two lists (be they mailing lists or stack overflow).
John
John David Sorkin M.D., Ph.D.
Professor of
R 3.0.1
Windows 7
Rstudio 0.97.551
Colleagues,
The last time I thought about using lmer to run an unbalanced repeated measures
ANOVA, I found that the package did not return p values or SEs. I believe this
was because Professor Bates had important questions about the theory behind the
Kishor,
It sounds like you will need to use logistic regression. Although the following
URL might help you better understand logistic regression,
http://ww2.coastal.edu/kingw/statistics/R-tutorials/logistic.html it would
probably be most helpful if you would see help from a local statistician.
Jeff, Andrew,
When you come up with a solution to the upgrade problem, please send it to me.
I have a similiar problem under Mint, which is an Unbuntu fork.
Thank you,
John
John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of
Dr. Therneau,
Thank you as always for first writing, and second continuing the Cox model in R
(and earlier I believe in SAS).
While your comments concerning non-proportional hazards is helpful, it does not
fully address the question, What alternatives do I have if I assume
proportional
Alan,
I can't answer your first question, but as far as the second question goes,
have you examined RStudio?
http://www.rstudio.com/
Rstudio is a free, nice, IDE (I think this stands for integrated development
environment that facilitates working in R. I provides very very basic sytax
help
Marc,
Thank you for your comments. The data has been previously collected, so the
study is a non-concurrent prospective analysis, i.e. retrospective analysis.
John
John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine
Colleagues,
Is there any R package that will allow one to perform a repeated measures Cox
Proportional Hazards regression? I don't think coxph is set up to handle this
type of problem, but I would be happy to know that I am not correct.
I am doing a study of time to hip joint replacement. As
...@me.com
marc_schwa...@me.com wrote:
On Jul 25, 2013, at 4:45 PM, David Winsemius dwinsem...@comcast.net wrote:
On Jul 25, 2013, at 12:27 PM, Marc Schwartz wrote:
On Jul 25, 2013, at 2:11 PM, John Sorkin jsor...@grecc.umaryland.edu
wrote:
Colleagues,
Is there any R package
(1) you need to examine the rnorm function, enter
?rnorm()
(2) when you review the documentation produced by entering the command
above, you will see that the rnorm function needs three parameter, the
number of values to generate, the mean of the numbers to be generated,
and the SD (standard
Windows 7 32 bit
R 3.0
RStudio that previously worked with R versions prior to R3.0
Colleagues,
I just downloaded R 3.0. When I try to launch RStudio (which was previously on
my computer), I get a message, R Session has a fatal error. Any suggestions
for getting RStudio up and running would
I am trying to write a function that makes a matrix out of two lists. As you
will see run running the function below, the result is NOT a matrix but rather
a list. Can anyone tell me what I am doing wrong?
Thanks,
John
test - function(one,two) {
cat(List One=,one,\n)
cat(List Two=,two,\n)
Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) Ben
Tupper btup...@bigelow.org 3/29/2013 1:49 PM
Hi,
On Mar 29, 2013, at 1:29 PM, John Sorkin wrote:
I am trying to write a function that makes a matrix
Does R have any function for performing cluster analysis when each subject
contributes more than one observation to the analysis, i.e. a repeated measures
cluster analysis? I prefer an agglomerative clustering, but would certainly be
happy with a K-mean or other clustering technique. To the
I am looking for a package that will allow me to choose R (a real number) that
minimizes the correlation of y and x^R, i.e.
find R such that corr(y,x^R) is minimized. Any suggestions for packages I might
look at would be helpful.
Thanks,
John
John David Sorkin M.D., Ph.D.
Chief,
(Please call phone number above prior to faxing) Bert
Gunter gunter.ber...@gene.com 2/5/2013 4:16 PM
If you really mean minimize and not maximize, I doubt that any
such R exists.
-- Bert
On Tue, Feb 5, 2013 at 1:08 PM, John Sorkin jsor...@grecc.umaryland.edu wrote:
I am looking for a package
Amin,
It is incorrect to use the relative risk as a measure of association in a
logistic regression. The measure of association in a logistic regression is
the odds ratio. The odds ratio is an approximation of the relative risk. The
approximation becomes progressively better as the disease
Windows 7, R 2.12.1
Colleagues,
I am trying to understand the n.for.2means function. The code below is a copy
of the function (renamed to n.for.2means.js). I have inserted a single line of
code towards the bottom of the function which uses the cat function to print
the value of n1. You will
I am not sure why one would want a relative risk from a logistic regression.
The measure of association from a logistic regression is the odds ratio, not
the relative risk.
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine
21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) Kevin
E. Thorpe kevin.tho...@utoronto.ca 1/30/2013 11:22 AM
On 01/30/2013 11:17 AM, John Sorkin wrote:
I am not sure why one would want a relative risk from a logistic
regression. The measure
Why are the help pages not right? The ... construct is a fundamental part of
the language syntax. Information about this fundamental construct should be
easily available!
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division
Rolf
Perhaps the philosophy of the help system needs to change . . .
John
Sent from my iPhone
On Jan 17, 2013, at 7:11 PM, Rolf Turner rolf.tur...@xtra.co.nz
rolf.tur...@xtra.co.nz wrote:
The help facility is applicable to functions and data sets. It is not
designed
or intended to
windows 7, R 2.12
I am trying to run a piecewise linear regression with a single knot, i.e. a
regression composed of two straight lines where the two lines intersect at an x
value given by the variable knot. I wish to estimate the slope of both lines,
the value of knot, the x value where the
Windows 7
R 2.12.1
I am trying to write a function (see sample code below) that will take the
output of a t-test and produce results suitable for a table.
I have two questions
(1) You will note that the name of the outcome variable, which is value in
the input is replaced by the string outcome
Erin,
We recently received an email message saying version 3.0 was coming soon. As I
remember it, there will be a number of important improvements, but no major
changes in functionality. Version 2.xx will probably be fine for your class.
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics
I am running a random intercept random slope regression:
fitRIRT - lme(echogen~time,random=~
1+time|subject,data=repeatdata,na.action=na.omit)
summary(fitRIRT)
I would like to get the subject-specific slopes, i.e. the slope that the model
computes for each subject. If I have 10-subjects I
Greene Street
GRECC (BT/18/GR)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) Kenneth
Frost kfr...@wisc.edu 12/4/2012 10:44 AM
I think this might be close to what you want. ranef(fitRIRT)
On 12/04/12, John Sorkin wrote:
I am running
will hopefully correct me if I'm wrong.
On 12/04/12, John Sorkin wrote:
Ken,
Thank you for your help. ranef(fitRIRT) does not give me what I expect. The
subject-specific slopes, and subject-specific intercepts are not anywhere
close to what I would expect them to be; the mean
Does anyone know an R package that implements marginal structural modeling as
described by Jamie Robins? A similar question was asked of the list
approximately two-years ago and it does not appear that anyone responded.
Thanks,
John Sorkin
John David Sorkin M.D., Ph.D.
Chief, Biostatistics
Gentleman,
This thread has been of great interest. Perhaps I missed part of it,
but do far I have not seen an example of code that has line numbers that
demonstrates how one can (in some instances) recover the line number of
an error. Can I impose upon the people who contributed to this thread to
Window XP
R 2.15
I am running a cluster analysis in which I ask for three clusters (see code
below). The analysis nicely tells me what cluster each of the subjects in my
input dataset belongs to. I would like two pieces of information
(1) for every subject in my input data set, what is the
maitra.mbox.igno...@inbox.com 10/2/2012 1:59 PM
John,
On Tue, 2 Oct 2012 11:35:12 -0400 John Sorkin
jsor...@grecc.umaryland.edu wrote:
Window XP
R 2.15
I am running a cluster analysis in which I ask for three clusters (see code
below). The analysis nicely tells me what cluster each
14:32:12 -0400 John Sorkin
jsor...@grecc.umaryland.edu wrote:
Ranjan,
Thank you for your help. What eludes me is how one computes the distance from
each cluster for each subject. For my first subject, datascaled[1,], I have
tried to use the following:
v1 - sum(fit$centers[1,]*datascaled[1
Window 7
R 2.15
I am writing a simulation which generates sample sized estimates from simulated
data. When I run the function shown below,
power.t.test(delta=14.02528,sd=1.945226,power=0.8,sig.level=0.05)
I get an error message:
)
Baltimore, MD 21201-1524
(Phone) 410-605-7119
(Fax) 410-605-7913 (Please call phone number above prior to faxing) David
Winsemius dwinsem...@comcast.net 9/18/2012 8:35 PM
On Sep 18, 2012, at 5:10 PM, John Sorkin wrote:
Window 7
R 2.15
I am writing a simulation which generates sample sized
Suggstion:
You need to send us more information, i.e. the code that genrated daty, or a
listing of the daty structure, and a copy of the listing
produced by epi.2by2
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of
Pamela
R squared with a non-zero, and with a zero intercept can be very different as
the regression line that you get with and without a zero intercept can be very
different. Have you plotted your data plot(k[,2],k[,1]) to see if a zero
intercept is reasonable for your data? Have you drawn the
R 2.15.0
Windows XP
Can someone help me understand why a random intercept model gives the same
results as the random intercept and slope models?
I am rather surprised by the results I am getting from lme. I am running three
models
(1) random intercept
fitRI -
-project.org [mailto:r-help-boun...@r-project.org] Namens
John Sorkin
Verzonden: dinsdag 12 juni 2012 16:52
Aan: r-help@r-project.org
Onderwerp: [R] lme random slope results the same as random slope and intercept
model
R 2.15.0
Windows XP
Can someone help me understand why a random intercept
I am running two mixed effects regressions. One (fitRandomIntercept) has a
random intercept, the second (fitRandomInterceptSlope) has a random intercept
and a random slope. In the random slope regression, the fixed effect for time
is not significant. In the random intercept random slope model,
say if I press escape or use the stop sign
button (both stop the whole evaluation rather than just the
identifying).
On Tue, Apr 3, 2012 at 8:52 AM, John Sorkin jsor...@grecc.umaryland.edu wrote:
I would like to have a figure with two graphs. This is easily accomplished
using mfcol:
oldpar
how rss and rdf are computed in
the code as well.
On Tue, Apr 3, 2012 at 8:56 AM, John Sorkin jsor...@grecc.umaryland.edu wrote:
Is the sigma from a lm, i.e.
fit1 - lm(y~x)
summary(fit1)
summary(fit1)$sigma
the RMSE (root mean square error)
Thanks,
John
John David Sorkin M.D., Ph.D
Please forgive my re-sending this question. I did not see any replies from my
prior post. My apologies if I missed something.
Is the sigma from a lm, i.e.
fit1 - lm(y~x)
summary(fit1)
summary(fit1)$sigma
the RMSE (root mean square error)
Thanks,
John
John David Sorkin M.D., Ph.D.
Chief,
Please forgive my re-sending this question. I did not see any replies from my
prior post. My apologies if I missed something.
I would like to have a figure with two graphs. This is easily accomplished
using mfcol:
oldpar - par(mfcol=c(1,2))
plot(x,y)
plot(z,x)
par(oldpar)
I run into trouble
I would like to have a figure with two graphs. This is easily accomplished
using mfcol:
oldpar - par(mfcol=c(1,2))
plot(x,y)
plot(z,x)
par(oldpar)
I run into trouble if I try to use identify with the two plots. If, after
identifying points on my first graph I hit the ESC key, or hitting stop
Is the sigma from a lm, i.e.
fit1 - lm(y~x)
summary(fit1)
summary(fit1)$sigma
the RMSE (root mean square error)
Thanks,
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North
I am trying to plot the results of a random effects model where each subject is
allowed to have his, or her, own intercept. I use xyplot to plot the data, lme
to compute the regression and then try to put a summary regression line on the
xyplot. As can be seen by the output pasted below, I am
I am trying to plot where data points from a give subject are connected by a
line. Each subject is represented by a single row of data. Each subject can have
up to five observations. The first five columns of mydata give the time of
observation, columns 6-10 give the values at each time point.
, type = b, col = black)
-- Bert
On Wed, Mar 28, 2012 at 2:39 PM, John Sorkin
jsor...@grecc.umaryland.edu wrote:
I am trying to plot where data points from a give subject are connected by a
line. Each subject is represented by a single row of data. Each subject can
have
up to five observations
I am trying to use matrix algebra to get the beta coefficients from a simple
bivariate linear regression, y=f(x).
The coefficients should be computable using the following matrix algebra: t(X)Y
/ t(x)X
I have pasted the code I wrote below. I clearly odes not work both because it
returns a
Adel,
I don't fully understand your question. Please try to explain what you
want to do again.
In general to change a data frame to a matrix, all one needs to do is
use the as.matrix function.
# Create dataframe
mydataframe1 - data.frame(x=1:3, y=10:12)
mydataframe1
class(mydataframe1)
#
you're doing and be able to fix it so I wouldn't
just
use below immediately.
xprimex - solve(t(data[,1:2]) %*% data[,1:2])
xprimey - t(data[,1:2]) %*% data[,3]
betas - xprimex %*% xprimey
print(betas)
On Sat, Feb 18, 2012 at 8:36 AM, John Sorkin jsor...@grecc.umaryland.eduwrote:
I am trying
phone number above prior to faxing)
Berend Hasselman b...@xs4all.nl 2/18/2012 9:05 AM
On 18-02-2012, at 14:36, John Sorkin wrote:
I am trying to use matrix algebra to get the beta coefficients from a simple
bivariate linear regression, y=f(x).
The coefficients should be computable using
I am trying to produce three boxplots and label the x axis values:
xvalues, yvalues, zvalues.
My code is below. The labels are not below the three boxplots. If you could
show me how to get the
labels below the columns I would be appreciative.
John
jdata-data.frame(x =
phone number above prior to faxing)
Robert Baer rb...@atsu.edu 2/8/2012 8:07 PM
xlab = needs to be names = see ?boxplot
boxplot(jdata[,x],jdata[,y],jdata[,z],names=c(x
values,yvalues,zvalues))
-Original Message-
From: John Sorkin
Sent: Wednesday, February 08, 2012 6:48 PM
Cc: r-help
Peter,
I have sympathy for Dong. It would be helpful if the message at the bottom of
the Email were modified to be more directive, e.g.
To modify your subscription (e.g. hold mail delivery during a vacation,
unsubscribe, etc.) go to https://stat.ethz.ch/mailman/listinfo/r-help
To make matters
Confidentiality Statement:
This email message, including any attachments, is for th...{{dropped:6}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
Please respond directly to me as I am not receiving Email from the R-Help
mailing list:
jsor...@grecc.umaryland.edu
Before I left for vacation, I turned delivery of mail from R-Help off. I cannot
find the proper web-page to use to turn mail back on. Can someone send me the
URL, or perhaps an
Roberto,
Please be more specific. What are the differences between ANOVA and LSD that
give you concern?
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
Windows XP
R 2.12.1
contrast package.
I am trying to understand how to create contrasts for a model that contatains
an interaction. I can get contrasts to work for a model without interaction,
but not after adding the interaction. Please see code below. The last two
contrast statements show
I am not sure (I can't test at the moment) but will this work?
sort(a[,4])
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA Medical Center
10 North Greene Street
GRECC (BT/18/GR)
Baltimore, MD
Forgive my resending this post. To data I have received only one response
(thank you Bert Gunter), and I still do not have an answer to my question.
Respectfully,
John
Windows XP
R 2.12.1
contrast package.
I am trying to understand how to create contrasts for a model that contatains
an
(column)
contrasts(row)-contr.treatment(levels(row))
contrasts(column)-contr.treatment(levels(column))
# Works for Terps
fit.terp-glm(counts ~ row + column + row*column,
family=poisson(link=log))
summary(fit.terp)
HTH,
Daniel Malter
University of Maryland, College Park
John Sorkin wrote
Windows XP
R 2.12
I am trying to understand how I can take a subroutine (i.e. function) I have
written in Fortran, and call the function in R. I need to know (1) where I
should store the Fortran subroutine (2) how to prepare the function for use in
R, and (3) how to load and call the
From you description, you should not used a paired Student's t-test. One uses
a paired test when pairs of observations come from the same experimental unit
(and thus are correlated). You describe a study where each experimental unit
is tested once and where there are two independent groups of
Would the following strategy work?
numtests - 20
# Create a data frame: test1 results from trial 1
# test2 results from trial 2
# agree indicagtor if trial1= trial2 (value =1) or
# trial1trial2 (value =0)
data -
Let my try again, but this time with corrected R code:
would the following strategy work:
numtests - 2000
# Create a data frame: test1 results from trial 1
# test2 results from trial 2
# agree indicagtor if trial1= trial2 (value =1) or
#
Correction. It won't work. Please ignore.
John Sorkin 9/7/2011 10:41:46 PM
Let my try again, but this time with corrected R code:
would the following strategy work:
numtests - 2000
# Create a data frame: test1 results from trial 1
# test2 results from trial 2
I believe when using BIC one needs to compare nested models, i.e. , when
comparing models A and B one must make sure that model A contains all the
parameters of model B and additionally A contains one or more extra parameter
beyond those in B. Further the comparison of BICs requires that models
It is hard to prove a negative, but to the best of my knowledge lm will not do
what you want. This does not mean there is not a function that will perform
your analyses; the sort of thing you want to do is often accomplished using
non-linear methods.
John
ראובן אברמוביץgantk...@walla.com
windows 7
R 2.12.1
Is there any easy way to determine if a sting contains nothing but blanks? I
need to check a series of strings of various length.
OneBlank -
TwoBlanks -
ThreeBlanks -
NoBlanks - NoBlanks
What I want would be a function such as ALLBLANKS that would return the
I can help with a few questions:
Q) How to get means for by groups and subset a files based on those (subset
highest and lowest groups)? (I can do this in multiple steps* but wonder
what the best, R way is to do this.)
A) aggregate
Q) How to create a matrix of plots? (Take 4 separate plots and
After the plot is created, you can save the graph as a pdf document (file menu,
save as). You can then send the pdf file to your colleagues.
John
John David Sorkin M.D., Ph.D.
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology
Baltimore VA
First a word of caution: Forward, backward, and stepwise regression analyses
are not well received among statisticians. There are many reasons for this.
Some of the reasons include:
(1) The p value computed at each step is computed ignoring all the previous
steps. This can lead to incorrect
R 2.12
windows 7
I am summary data that I would like to make into a 2x2 table representing
counts positive vs. negative counts:
28/289 20/276
My table should look something like the following:
group1 group2
Positive28 20
Negative 289 276
How can a (1) create the 2x2
R 2.10
Windows 7
I am trying to plot three graphs on top of each other. I need to have the
axises perfectly aligned. For some reason the ticks on the y axes are slightly
off so they do not perfectly align. Can someone tell me how I can get the to
overlay each other perfectly? I thought the
R 2.12.2
Windows 7
I would like to know how to specify the color used in plotting points on a
scatter plot, generated using plot(x,y) and how I can specify the particular
symbol used. I would like, for example, to plot some points as blue circles and
other points a red squares. If someone will
Of John Sorkin
Sent: Monday, 11 April 2011 2:29 p.m.
To: r-help@r-project.org
Subject: [R] Specifying the color of points and the plot symbol to be
used on a graph
R 2.12.2
Windows 7
I would like to know how to specify the color used in plotting points
on a scatter plot, generated using plot
Windows 7
R 2.12.2
When I launch R, I get the following error message:
Fatal error: unable to restore saved dat in .RData
after which R closes.
What does the error message mean, and what can I do to get R to work? I tried
removing the R program, re-downloaded the program, and re-installed
How would one generate data to be used in a simulation of a repeated measures
ANOVA given a known (1) within-person correlation with known (2) mean and SD of
data obtained at each of three times of observation?
Thanks,
John
John Sorkin
Chief Biostatistics and Informatics
Univ. of Maryland School
Yeleska,
Has leyido los papeles de ayuda por rbind? Si no, abri R y entre
?rbind.
Subset es mas deficil. Tiene que usar subscriptos. Por ejemplo, se
tienes una matrix o data frame se llama datos, para ver la primera linea
de datos entre datos[1,], par ver el segundo linea, datos[2,]. Se hay
una
R 2.10
Windows Vista
Is it possible to run a variance-components analysis using lme? I looked at
Pinheiro and Bates' book and don't see code that will perform these analyses.
If the analyses can not be done using lme, what package might I try?
Thanks,
John
John David Sorkin M.D., Ph.D.
Chief,
R 2.10.0
Windows XP
I am trying to run lme. I receive the following error message:
My lme code is:
fitRandom - lme(values ~ factor(subject),
data=withindata)
Below I have printed the console output, and at the bottom of this message, I
have printed my code.
I hope someone can tell my what I
Windows XP
R 2.10
I am trying to run lme and get the following error:
fitRandom - lme(values ~ subject,
+ data=withindata)
Error in getGroups.data.frame(dataMix, groups) :
Invalid formula for groups
my data follows, below which is a copy of all my code
print(withindata)
subject
(Please call phone number above prior to faxing) Dennis
Murphy djmu...@gmail.com 2/28/2011 4:08 PM
Hi:
On Mon, Feb 28, 2011 at 8:42 AM, John Sorkin jsor...@grecc.umaryland.eduwrote:
R 2.10.0
Windows XP
I am trying to run lme. I receive the following error message:
My lme code is:
fitRandom
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