, findInterval(seq(along = vec), breaks + 1)),
function(x) paste(sum(x), =, paste(x, collapse = +
[1] 6 = 1+2+3 30 = 4+5+6+7+8 19 = 9+10
Regards,
Marc Schwartz
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On Dec 10, 2012, at 2:52 PM, David Winsemius dwinsem...@comcast.net wrote:
On Dec 10, 2012, at 11:29 AM, Sam Steingold wrote:
How do I sum portions of a vector into another vector?
E.g., for
--8---cut here---start-8---
vec - 1:10
breaks - c(3,8,10)
On Dec 10, 2012, at 3:29 PM, Marc Schwartz marc_schwa...@me.com wrote:
On Dec 10, 2012, at 2:52 PM, David Winsemius dwinsem...@comcast.net wrote:
On Dec 10, 2012, at 11:29 AM, Sam Steingold wrote:
How do I sum portions of a vector into another vector?
E.g., for
--8---cut
can I perform this simple task in R?
Thanks in advance for your help.
The easiest is probably:
NewDF - subset(DF, is.na(myvalue))
See ?is.na
Regards,
Marc Schwartz
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-as-data-in-r.html
I would be sure to read the comments as well.
Regards,
Marc Schwartz
On Nov 30, 2012, at 4:12 PM, Rui Barradas ruipbarra...@sapo.pt wrote:
Hello,
Package sos does a good job at finding things available for R.
library(sos)
findFn('gsheet')
found 0 matches
x has zero
is pretty much all you should need.
Regards,
Marc Schwartz
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and provide commented, minimal, self
that something is amiss in the configuration.
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and provide commented
versions of the package available for Windows?
Just use:
install.packages(RODBC)
within an R session.
Finally, R version 2.12.0 is now over two years old. 2.15.2 is the current
version, so you should also be updating your R installation.
Regards,
Marc Schwartz
not reveal anything material on that
point.
7. Alternatives to RODBC would include ROracle and RJDBC via CRAN.
Regards,
Marc Schwartz
[[alternative HTML version deleted]]
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and is linked
in the See Also section of ?step.
To your second question, you can't. It uses AIC and this has also been
discussed frequently on this list. You might look at Frank's fastbw() function
in his 'rms' package on CRAN.
Regards,
Marc Schwartz
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,
this transforms my dataframe to 0 and 1 values, but I wish
to use -1 and 1 and looking for a way in R to do this.
Brian
See ?ifelse
ifelse(value 127.5, 1, -1)
You might want to think about what happens when value == 127.5 ...
Regards,
Marc Schwartz
in advance
Ricardo
There is a page here:
http://www.stats.uwo.ca/faculty/yu/Rmpi/
which is linked from the CRAN page for the package. On the above page, there is
an Installation for Linux link, which is likely to be helpful.
Regards,
Marc Schwartz
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, which is what you are showing below.
If you have tried that and failed, then I would recommend contacting the
package maintainer for assistance or perhaps posting to R-SIG-HPC:
https://stat.ethz.ch/mailman/listinfo/r-sig-hpc
Marc
On Wed, Nov 21, 2012 at 11:34 AM, Marc Schwartz marc_schwa
using Kerberos authentication on my Oracle
server here, so you may have to follow up on the R-SIG-DB list on that point. A
search of the archives did not reveal anything material on that point.
7. Alternatives to RODBC would include ROracle and RJDBC via CRAN.
Regards,
Marc Schwartz
is fast code.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible
.
The See Also on that help page points you to ?boxplot.stats which does the
computation and has additional detail. Both pages list references.
If all else fails, since R is open source, you can always look at the source
code for both functions to follow exactly what is done.
Regards,
Marc Schwartz
a source package.
You need to use:
install.packages(/Users/hoffmann/R/cwhmisc_4.0.tar.gz,
repos = NULL, type = source)
Regards,
Marc Schwartz
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PLEASE
, 'bty', for options there.
Or, you can always use ?segments, knowing that par(usr) gives you the
coordinates of the plot region corners...
Regards,
Marc Schwartz
On Nov 12, 2012, at 1:04 PM, Rui Barradas ruipbarra...@sapo.pt wrote:
Hello,
If you want to completely remove the axis, overplot
is to remove observations with any
missing data (eg. NA values) when using modeling functions. Or you can
pre-process using:
D.New - na.omit(D)
and then use D.New for all of your subsequent analyses. See ?na.omit.
Regards,
Marc Schwartz
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On Nov 9, 2012, at 11:23 AM, Bert Gunter gunter.ber...@gene.com wrote:
Marc et. al:
On Fri, Nov 9, 2012 at 9:05 AM, Marc Schwartz marc_schwa...@me.com wrote:
On Nov 9, 2012, at 10:50 AM, Eiko Fried tor...@gmail.com wrote:
A colleague wrote the following syntax for me:
D = read.csv
in R?
- J
You might want to look at John Fox' appendix on non-linear models for some
additional insights:
http://socserv.mcmaster.ca/jfox/Books/Companion/appendix/Appendix-Nonlinear-Regression.pdf
Regards,
Marc Schwartz
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On Nov 8, 2012, at 12:57 AM, Prof Brian Ripley rip...@stats.ox.ac.uk wrote:
On 07/11/2012 23:12, Marc Schwartz wrote:
On Nov 7, 2012, at 4:58 PM, r ric.rom...@gmail.com wrote:
Dear list, I have some .xls files that I need to read into R. I am
able to do so using read.xls in the gdata
:
http://cran.r-project.org/web/packages/sas7bdat/index.html
Regards,
Marc Schwartz
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On Nov 8, 2012, at 9:33 AM, Prof Brian Ripley rip...@stats.ox.ac.uk wrote:
On 08/11/2012 15:28, Marc Schwartz wrote:
On Nov 8, 2012, at 12:57 AM, Prof Brian Ripley rip...@stats.ox.ac.uk wrote:
On 07/11/2012 23:12, Marc Schwartz wrote:
On Nov 7, 2012, at 4:58 PM, r ric.rom...@gmail.com
will then be
used throughout. There is too much text to use PSFrag.
Thanks for your help!
Karen
Take a look at ?ps.options, which is referenced in ?postscript in the Details
and See Also sections there.
Regards,
Marc Schwartz
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center.
A conceptual note, which is that this format can be ok for
proportions/percentages, but you will recommendations against using this format
to display continuous data (eg. means +/- SE). In that case, point plots with
CI's is preferred.
Regards,
Marc Schwartz
--123.5
[9] --
matrix(Vec.new, ncol = 3, byrow = TRUE)
[,1][,2][,3]
[1,] 12.35 --10
[2,] 12.35 --NA
[3,] --123.5 --
Regards,
Marc Schwartz
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pseudo R^2 as part of the model output.
However, be sure you understand what it means in the context of logistic
regression. It is not the same as the R^2 in OLS regression.
Regards,
Marc Schwartz
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be the first element in the
returned vector. So, if you just want the IV's you could use:
all.vars(formula(MODEL))[-1]
An example:
# from ?cars
fm1 - lm(log(dist) ~ log(speed), data = cars)
all.vars(formula(fm1))
[1] dist speed
Regards,
Marc Schwartz
filename in that function in your
code, so that when you use relative paths, the appropriate expansion is used
and passed to the gdata function as the filename argument.
I just made this change myself in the WriteXLS package at the request of
another useR.
Regards,
Marc Schwartz
of prior experience,
but because I have never needed to.
Just use the full path to whatever external files you need, rather than
changing the working directory in order to avoid using the full path. That has
worked for me over hundreds of Sweave reports over the course of many years.
Regards,
Marc
subscribe first:
https://stat.ethz.ch/mailman/listinfo/r-devel
as it will save the R-Devel list moderators from having to manually approve
each of your posts, therefore making your posting more expedient.
Thanks and regards,
Marc Schwartz
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...
Regards,
Marc Schwartz
On Sun, Nov 4, 2012 at 7:01 AM, Sam Steingold s...@gnu.org wrote:
I have some packages installed using install.packages().
Do I need to reinstall them?
https://r-forge.r-project.org/tracker/?func=detailatid=294aid=2224group_id=61
Not a bug: This only happens
0 0 0 3 0 0 3 1 4 4 3 5
temp9 0 0 0 0 0 6 0 0 6 2 2 3 0 4
Regards,
Marc Schwartz
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someone tell me what this error means?
Thank you,
Praveen.
More than likely, a similar problem as in this recent thread, but for 64 bit,
rather than 32 bit:
https://stat.ethz.ch/pipermail/r-help/2012-October/325257.html
Regards,
Marc Schwartz
On Oct 29, 2012, at 2:04 PM, Duncan Murdoch murdoch.dun...@gmail.com wrote:
On 29/10/2012 2:54 PM, Marc Schwartz wrote:
On Oct 29, 2012, at 1:28 PM, Praveen Surendran praveen.surend...@ucd.ie
wrote:
Hi,
I have a file in .sas7bdat format. I tried to open this file using
,
Site Mapping Detail\));)
testData - sqlQuery(db, Query)
It is also possible that you may not need to use the final semi-colon.
Regards,
Marc Schwartz
I get no error messages, but I when call for testData, I get the following:
testData
[1] 07002 -3010 [Microsoft][ODBC Microsoft Access
for multiple
pairwise comparison adjustment methods.
The most conservative, but not always the best approach, would of course be
Bonferroni.
Regards,
Marc Schwartz
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PLEASE
for the distribution of
your IVs.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self
7
5 1 6
str(as.data.frame(unclass(RES)))
'data.frame': 5 obs. of 2 variables:
$ lengths: int 5 4 3 2 1
$ values : int 10 9 8 7 6
Regards,
Marc Schwartz
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. Helsinki
You can save yourself a lot of time if you visit the R FAQ as your first action
item when such questions come up. In this case:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-my-matrices-lose-dimensions_003f
Regards,
Marc Schwartz
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or of course install more RAM.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self
in the
CRAN checks for problems already found.
If you have not, you might want to look at the CRAN task view here:
http://cran.r-project.org/web/views/Pharmacokinetics.html
which might provide some possible alternatives.
Regards,
Marc Schwartz
for using PSTricks.
Keep in mind that since this is PostScript based, you need to use a latex
+ dvips + ps2pdf sequence, rather than just pdflatex.
Regards,
Marc Schwartz
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this is PostScript based, you need to use a latex +
dvips + ps2pdf sequence, rather than just pdflatex.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http
in.
Regards,
Marc Schwartz
On Oct 4, 2012, at 10:27 AM, R. Michael Weylandt michael.weyla...@gmail.com
wrote:
R is used by many many folks, and most of us don't have the domain
knowledge to make heads or tails of what you're mentioning here.
You'll need to greatly clarify and perhaps ask
that? SAS seems to be able to customized stepwise function with p-value
or cooks'd.
You might take some time to ponder the possibility that the fact that it's
not easy in R might be useful information in its own right.
I nominate this as a fortune candidate...
Regards,
Marc Schwartz
and distributing.
In the latter case, whether you plan to charge for the resultant product or
make it available for free, is irrelevant.
Regards,
Marc Schwartz
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PLEASE do read
On Oct 3, 2012, at 9:56 AM, Spencer Graves
spencer.gra...@structuremonitoring.com wrote:
On 10/3/2012 7:26 AM, Marc Schwartz wrote:
On Oct 3, 2012, at 4:49 AM, Narendra pratap.naren...@gmail.com wrote:
Hi,
I have developed one application using ggmap package.It is based on google
map
?
Marc Schwartz
P.S. It's International Talk Like a Pirate Day, which of course fits with a
certain language we all hold dear. Somebody had to do it... ;-)
Sarah
-Oorspronkelijk bericht-
Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
Namens Sarah Goslee
be
accessed by using:
vignette(RODBC)
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented
a function that takes requisite arguments and runs the for()
loop within the function body and returns the object you actually need. That
way, any variables created within the scope of the function are gone when the
function exits.
Regards,
Marc Schwartz
and towards the end has a post with some timings.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
itself is predicated upon the source PDF not
being a scanned image of a text page, in which case you would need an OCR based
application.
Regards,
Marc Schwartz
On Aug 27, 2012, at 1:48 PM, Christofer Bogaso bogaso.christo...@gmail.com
wrote:
Thanks Berend for your reply. However I
results like -2.315223e-18
This is really near to 0 but not very aesthetic.
Can I prevent this? Or is this behaviour desired?
Thank you very much!
Burtan
Read this:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
Regards,
Marc Schwartz
-Statistics-Computing/dp/0387094172
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self
. it is multiple lines/function
calls, etc.), I will generally have the R code in an R chunk, assign the result
to a scalar and then include that scalar in the \Sexpr{}:
This is referenced in the Sweave manual and FAQ:
http://www.statistik.lmu.de/~leisch/Sweave/
Regards,
Marc Schwartz
there is as easy as adding the EPEL to your repo list and
using 'yum install R' as root (eg. via sudo) from the CLI.
Regards,
Marc Schwartz
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PLEASE do read the posting guide
specific R e-mail list at:
https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
You should subscribe to and post there with any follow ups or future Fedora
specific R queries.
Regards,
Marc Schwartz
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https
Forest Model Using Scoring Data (N = 700)}
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented
here:
https://stat.ethz.ch/mailman/listinfo/r-sig-mac
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
the use of '!' before Electrode to negate the boolean logic.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
That's not the same site, as is noted at the bottom of that site's main page.
It does appear that R-Forge is down, albeit the domain is resolving and the
server IP is responding quickly to pings with no packet loss.
Regards,
Marc Schwartz
On Aug 7, 2012, at 5:29 PM, Roy Mendelssohn
On Aug 7, 2012, at 3:02 PM, Liviu Andronic landronim...@gmail.com wrote:
On Mon, Aug 6, 2012 at 7:35 PM, Marc Schwartz marc_schwa...@me.com wrote:
is.letter - function(x) grepl([[:alpha:]], x)
is.number - function(x) grepl([[:digit:]], x)
Another follow-up. To test for (non-)alphanumeric
On Aug 7, 2012, at 3:18 PM, Marc Schwartz marc_schwa...@me.com wrote:
On Aug 7, 2012, at 3:02 PM, Liviu Andronic landronim...@gmail.com wrote:
On Mon, Aug 6, 2012 at 7:35 PM, Marc Schwartz marc_schwa...@me.com wrote:
is.letter - function(x) grepl([[:alpha:]], x)
is.number - function(x
b10 c8 d3 e6 f1 g5 ...
system.time(is.letter(x))
user system elapsed
0.011 0.000 0.010
system.time(is.number(x))
user system elapsed
0.010 0.000 0.011
Regards,
Marc Schwartz
On Aug 6, 2012, at 11:51 AM, Rui Barradas ruipbarra...@sapo.pt wrote:
Hello,
Fun
On Aug 6, 2012, at 12:06 PM, Marc Schwartz marc_schwa...@me.com wrote:
Perhaps I am missing something, but why use sapply() when grepl() is already
vectorized?
is.letter - function(x) grepl([:alpha:], x)
is.number - function(x) grepl([:digit:], x)
Sorry, typos in the above from my CP
,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
,
Jen
You could use ?ifelse:
ifelse(var2 == 0, 0, var1 / var2)
[1] 0.0 13.9 53.79000 0.0 150.0 350.0
It is very common in programming to include code to handle exceptions, so don't
be shy about using conditional coding as may be appropriate.
Regards,
Marc Schwartz
in a post earlier today:
https://stat.ethz.ch/pipermail/r-help/2012-July/319508.html
Also, please start a new thread when you post, rather than replying to an
existing thread.
Regards,
Marc Schwartz
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https
)
10 20 30
1 100 NA NA
2 NA 200 NA
3 NA NA 300
tapply(z, list(x, y), function(x) sum(!is.na(x)))
10 20 30
1 2 NA NA
2 NA 3 NA
3 NA NA 3
Regards,
Marc Schwartz
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these analyses seem overlap to an extent with that
domain:
http://cran.us.r-project.org/web/views/MachineLearning.html
Regards,
Marc Schwartz
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PLEASE do read the posting guide http
Covariates
F.Y. Hsieh and Philip W. Lavori
Controlled Clinical Trials 21:552–560 (2000
A skillful Google search will find both available online if you don't have
access otherwise.
Regards,
Marc Schwartz
On Jul 17, 2012, at 12:33 PM, Greg Snow wrote:
One quick (though probably not canned
want a negative binomial model, you should be using glm.nb() in VR's
MASS package:
require(MASS)
NB1 - glm.nb(...)
Then you can use the Vuong test from pscl.
If you have not, you might want to read:
vignette(countreg)
Regards,
Marc Schwartz
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still use ?as.Date to coerce the column to a Date class and use the
above incantation.
See ?subset for additional information on that function.
Regards,
Marc Schwartz
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enough, there is an entire manual on importing and exporting data
to/from R:
http://cran.r-project.org/manuals.html
Several suggestions there for SAS in the relevant manual:
http://cran.r-project.org/doc/manuals/R-data.html#Importing-from-other-statistical-systems
Regards,
Marc Schwartz
' is part of the standard R
installation as a recommended package.
All you need to do is either:
library(boot)
or
require(boot)
Regards,
Marc Schwartz
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PLEASE do
table? You may want to verify that with your DBAdmin. Is that
actually the name of the table?
3. Try using:
nowfetchmewilwheaton - sqlQuery(check, select * from ANYTHING)
and see if that works.
Regards,
Marc Schwartz
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TRUE
4 5.6 6.7 FALSE FALSE
Regards,
Marc Schwartz
On Jul 2, 2012, at 7:46 AM, John Kane wrote:
You are not asking for a Decrete [sic] (descrete) value check but rather if
the numbers are intergers.
Try this:
# from the ?is.integer help page
is.wholenumber -
function(x
rates? I checked epiR and epitools. It seems they
do not have this function.
Thank you for the help.
You can use ?prop.trend.test or you can also look at the ?independence_test
function with 'teststat = quad', which is in the coin package on CRAN.
Regards,
Marc Schwartz
will
also be helpful in that setting and you would likely be pointed to the glmer()
function in the lme4 package for that application, which provides for GLMs in a
mixed effects framework.
Regards,
Marc Schwartz
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to consider using
some of the tools in Frank's rms package on CRAN to further evaluate/validate
that model.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R
, or Ed might use ?debug to follow
the code execution in read.table() and see where the relevant flags get
triggered. The latter option would help Ed learn how to use the debugging tools
that R provides to dig more deeply into such issues.
Regards,
Marc Schwartz
On Jun 4, 2012, at 1:30 PM
typically use for reference are:
http://www.regular-expressions.info/
and
Mastering Regular Expressions
Jeffrey Friedl
http://www.amazon.com/Mastering-Regular-Expressions-Second-Edition/dp/0596002890
Regards,
Marc Schwartz
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and is due RSN. Perhaps there will be copies at useR in
Nashville next week? One could hope... :-)
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R
,
Marc Schwartz
On Jun 1, 2012, at 3:06 PM, Rui Barradas wrote:
Hello,
Try
score2$subject - rep(score$subject, 7)
Hope this helps,
Rui Barradas
Em 01-06-2012 20:47, Jason Love escreveu:
Hello R users,
I'd like to ask a question about how to add a new column. So, below is my
On May 27, 2012, at 9:45 AM, Soheila Khodakarim wrote:
Dear All
Pleade give me an URL that I can download R for cenos linux 64 bit.
R is available from the EPEL for RHEL, CentOS and Scientific Linux:
http://fedoraproject.org/wiki/EPEL
Regards,
Marc Schwartz
but it didnt work
regards
GRR
The latest version of survival on CRAN is 2.36-14.
When you install rms, be sure to use:
install.packages(rms, dependencies = TRUE)
to be sure that package dependencies are satisfied during the installation.
Regards,
Marc Schwartz
of package 'AER' had non-zero exit status
18: In install.packages(rms, dependencies = TRUE) :
installation of package 'dynlm' had non-zero exit status
what can be done?
Regards
GRR
On 25 May 2012 10:09, Marc Schwartz marc_schwa...@me.com wrote:
On May 25, 2012, at 8:51 AM, ramakanth
of the original x.
Regards,
Marc Schwartz
On May 25, 2012, at 10:56 AM, Rui Barradas wrote:
Hello,
Tip: see the difference between the following two.
for(i in 1:7)
cat(i, :, (i-1)*7:(i)*7, \n)
for(i in 1:7)
cat(i, :, ((i-1)*7):(i*7), \n)
(operator ':' has high precedence
in Electrical and Mechanical Engineering
---
-Original Message- From: Marc Schwartz
Sent: Thursday, May 24, 2012 3:58 AM
To: Duncan Murdoch
Cc: Giannis Mamalikidis ; r-help@r-project.org
Subject: Re: [R] Question
events given the distribution of LOCS in your
data.
Regards,
Marc Schwartz
On May 24, 2012, at 2:41 PM, Nathan Svoboda wrote:
Hi David,
My apologies, I am not sure if this makes a big difference in your assessment
of the problem, but the results I just sent were only from a portion (1/15
(Petal.Length ~ ., data = iris)
formula(LM)
Petal.Length ~ Sepal.Length + Sepal.Width + Petal.Width + Species
all.vars(formula(LM))
[1] Petal.Length Sepal.Length Sepal.Width Petal.Width
[5] Species
Regards,
Marc Schwartz
On Wed, May 23, 2012 at 10:58 AM, jdubj...@ramas.com wrote:
What
On May 23, 2012, at 2:52 PM, arun wrote:
Hi Marc,
Just to point out some difference,
x - 1:20
y - x + (x/4 - 2)^3 + rnorm(20, sd=3)
names(y) - paste(O,x,sep=.)
ww - rep(1,20); ww[13] - 0
summary(lmxy - lm(y ~ x + I(x^2)+I(x^3) + I((x-10)^2),
of you before proceeding.
Regards,
Marc Schwartz
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Regards,
Marc Schwartz
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with a worksheet in the XLS file for each factor level in
iris$Species.
Regards,
Marc Schwartz
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has
specific behavior in dealing with NA values.
Regards,
Marc Schwartz
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Marc Schwartz
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On May 9, 2012, at 11:00 AM, Barry Rowlingson wrote:
Someone said:
Once R is accepted, you could ask for an RStudio test if you want.
I had another thought shortly after my initial email. Suppose yes, R
is accepted. Great. You run R.
Then you think, Oh, I need ggplot2 (yes you do). Do
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