,])
[1] 81.00 76.36
Many thanks
Ed
Ed,
See:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-my-matrices-lose-dimensions_003f
and then use:
predict(fit10, testX[1, , drop = FALSE])
HTH,
Marc Schwartz
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of this kind calculations, so I'd like an efficient solution. Thanks
See ?rep and ?as.data.frame.table
Try this:
data.frame(table(rep(y, x)))
Var1 Freq
1a5
2b2
3c8
HTH,
Marc Schwartz
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https
= chemdata, …
to take advantage of the formula method for boxplot().
HTH,
Marc Schwartz
Please explain how I enter these commands.
Rich
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PLEASE do read the posting guide
to rev 5901, so you should update to that.
For Mac specific queries, you should subscribe and post to the r-sig-mac list:
https://stat.ethz.ch/mailman/listinfo/r-sig-mac
HTH,
Marc Schwartz
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.
HTH,
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.
for general info, you do not need to do this, as R's modeling functions
will do this internally for you.
That being said, if you want to do this manually see ?model.matrix
HTH,
Marc Schwartz
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= Groups)
HTH,
Marc Schwartz
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[[1]]
[1] 1 2
[[2]]
[1] M F
names(listVar)
NULL
On the other hand, if you use:
listVar - list(age = age, sex = sex)
listVar
$age
[1] 1 2
$sex
[1] M F
names(listVar)
[1] age sex
HTH,
Marc Schwartz
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https
the whiskers fromt he blot.
B.R
From: Marc Schwartz marc_schwa...@me.com
Cc: R-help@r-project.org R-help@r-project.org
Sent: Tuesday, August 16, 2011 7:38 PM
Subject: Re: [R] postscript( does not save the plot
On Aug 16, 2011, at 12:32 PM, Alaios wrote
) are not interpreted in character strings in
plotmath, unlike normal plotting.
You would need to create each line as a separate expression and use ?mtext, if
you wish, to place each line along the axis, using the 'line' argument for
placement/spacing.
HTH,
Marc Schwartz
as horizontal = FALSE, onefile = FALSE, paper =
special. Note that the bounding box is for the device region: if you find the
white space around the plot region excessive, reduce the margins of the figure
region viapar(mar=).
HTH,
Marc Schwartz
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' variant
places the tabular environment within a table environment. The tabular
environment does not support the \caption command, table does, hence no caption
if the tabular is not contained within a float (floating = FALSE).
HTH,
Marc Schwartz
. Then use:
\begin{landscape}
other code here
\end{landscape}
That way you can create a landscape oriented page within a document that might
otherwise contain portrait orientation pages.
HTH,
Marc Schwartz
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the statistician and
subject matter experts, to the detriment of inference.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
that at least Jennison and Turnbull (1999)
have a chapter on multiple endpoints.
HTH,
Marc Schwartz
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,
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.
A B
1 2 NA
2 3 4
3 NA 3
4 4 1
5 2 NA
6 1 4
7 NA NA
8 5 3
9 4 1
with(DF, ifelse(!is.na(B), B, A))
[1] 2 4 3 1 2 4 NA 3 1
HTH,
Marc Schwartz
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Procedures that you may already have, or would
need to be written for this purpose.
Regards,
Marc Schwartz
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an analysis that was done some time ago
and have to use the same versions? If the former, be sure to contact the
package maintainer to request that it be fixed, if they have not already
orphaned it.
Cheers,
Marc Schwartz
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On Jul 15, 2011, at 2:58 PM, jstevens wrote:
I'm running Ubuntu - natty. Forgive me if I sound lost, its been just over a
week since I switched over from Windows. I originally installed 2.12 using
the Ubuntu software center, but have now switched to using the terminal.
2.9.2 was installed
)
This is untested, but should work. The key is to only include the actual SQL
query text in the paste call.
HTH,
Marc Schwartz
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syntax
or perhaps a driver issue.
HTH,
Marc Schwartz
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and provide commented, minimal, self
0.25
22NANANA
33NANANA
44 0.55 0.25 0.20
55 0.65 0.20 0.15
# Now transpose the columns in DF to the matrix required for the plot
barplot(t(DF2[, -1]), names.arg = DF2$Time)
HTH,
Marc Schwartz
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under the
Lesser GNU General Public LIcense version 2.1.
This can be displayed by RShowDoc(COPYING.LIB),
or obtained at the URI given.
'Share and Enjoy.'
HTH,
Marc Schwartz
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It is highly unlikely that LOS is normally distributed.
HTH,
Marc Schwartz
On Jul 8, 2011, at 10:43 AM, Greg Snow wrote:
How are you measuring length of stay? A chi-square test suggests that you
have it categorized, a t-test assumes it is continuous (and relatively
symmetric with the amount
are really saving by using it versus
gsub() directly.
HTH,
Marc Schwartz
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and provide commented
that, I want to report the
selected string (in place of replacing with something?) What are the other
related things? Can you help me giving some online reference?
Thanks,
-Original Message-
From: Marc Schwartz [mailto:marc_schwa...@me.com]
Sent: 07 July 2011 21:54
To: Bogaso
On Jul 2, 2011, at 5:39 AM, peter dalgaard wrote:
On Jul 2, 2011, at 03:29 , Marc Schwartz wrote:
It actually scared me that I had any recollection of an isolated post from
10 years ago. Not sure what to make of that...
If it is any consolation, the author had forgotten it entirely
in considering other possible solutions if
locale is relevant here.
HTH,
Marc Schwartz
On Jul 1, 2011, at 11:51 AM, Cody Hamilton wrote:
Hello Uwe,
Please forgive my ignorance - how can I get my diffs?
Regards,
-Cody
--- On Fri, 7/1/11, Uwe Ligges lig...@statistik.tu-dortmund.de
.
Regards,
Marc Schwartz
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)),
args.legend = list(fill = grey.colors(nrow(mat
Alternatively, You can use legend() separately to add the legend to the barplot
in the fashion that you desire.
Thus:
barplot(mat)
legend(topright, legend = rownames(mat),
fill = grey.colors(nrow(mat)))
HTH,
Marc Schwartz
P.S
On Jul 1, 2011, at 8:15 PM, David Winsemius wrote:
On Jul 1, 2011, at 7:44 PM, Marc Schwartz wrote:
On Jul 1, 2011, at 4:50 PM, David Winsemius wrote:
I would like to do some operations inside a function using only one value
for the last dimension of a table/matrix:
tabfn
aggregate(CONTTIME ~ DF$SCRNO, data = DF, sum)
DF$SCRNO CONTTIME
1 HBA00200369
2 HBA00200873
3 HBA0020209 31
4 HBA0020213 11
5 HBA00202229
6 HBA0020292 70
See ?aggregate
HTH,
Marc Schwartz
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On Jun 30, 2011, at 12:30 PM, Marc Schwartz wrote:
On Jun 30, 2011, at 11:20 AM, Edgar Alminar wrote:
I did this:
library(data.table)
dd - data.table(bl)
dd[,sum(as.integer(CONTTIME)), by = SCRNO]
(I used as.integer because I got an error message: sum not meaningful for
factors
of system()?
Thanks R-world,
John Dennison
See the 'intern' argument:
system(date, intern = TRUE)
[1] Thu Jun 30 17:06:12 CDT 2011
This returns a character vector of the results of the command executed.
HTH,
Marc Schwartz
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function which has a Date method (defaulting to units in
days) and also a 'lag' option:
diff(as.Date(test, format = %y-%m-%d), lag = 4)
Time differences in days
[1] 283 224 359 367
I use 30.44 above to convert days to months.
HTH,
Marc Schwartz
On Jun 29, 2011, at 10:50 AM, Iain Gallagher
the packages
without needing to have development tools (compilers, etc.) present on their
systems.
Regards,
Marc Schwartz
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be happening on your end.
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
of
the display (in pixels per inch) upon which the file is being viewed.
See ?Devices for more information on the available output devices on your
system. Then select the particular device you wish to use for details on how to
adjust the dimensions.
Regards,
Marc Schwartz
Just use lapply():
set.seed(1)
x - rnorm(20)
lapply(1:3, function(i) sample(x, i))
[[1]]
[1] -0.6264538
[[2]]
[1] -0.3053884 -2.2146999
[[3]]
[1] -2.21469989 -0.30538839 -0.04493361
HTH,
Marc Schwartz
On Jun 17, 2011, at 12:53 PM, Daniel Malter wrote:
I am sure there is a more elegant
that the
y-values (coordinates) are negative, which I don't want. Is there a simple
way to do this?
Jason
This is where the 'ylim' argument to plot is helpful, along with ?rev and
?range:
x - 1:10
y - 1:10
plot(x, y)
versus:
plot(x, y, ylim = rev(range(y)))
HTH,
Marc Schwartz
,] 0.006280048 0.006280048
[2,] 0.330934659 0.330934659
If you want to overwrite Index.Matrix:
Index.Matrix[] - Rates[Index.Matrix]
Index.Matrix
[,1][,2]
[1,] 0.006280048 0.006280048
[2,] 0.330934659 0.330934659
HTH,
Marc Schwartz
]
R2
$`1`
[1] 4 5 3
$`2`
[1] 2 4 6 4
$`3`
[1] 2 2
$`4`
[1] 3 4 1
Now use normal list processing to get the lengths and sums
sapply(R2, length)
1 2 3 4
3 4 2 3
sapply(R2, sum)
1 2 3 4
12 16 4 8
HTH,
Marc Schwartz
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to folks.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
33.58844 10616 0.002627
3 1 35006 AL ADGER 87.16746 33.43428 3205 0.000793
4 1 35007 AL KEYSTONE 86.81286 33.23687 14218 0.003519
5 1 35010 AL NEW SITE 85.95109 32.94145 19942 0.004935
6 1 35014 AL ALPINE 86.20893 33.33116 3062 0.000758
HTH,
Marc Schwartz
each
run of blockrand(), so that you can reproduce the sequencing again in the
future, if required.
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R
[findInterval(data2$position, t(data1)) %in% seq(1, 13, 2)]
[1] 1 3 9
or data2$position:
data2$position[findInterval(data2$position, t(data1)) %in% seq(1, 13, 2)]
[1] 2 20 85
HTH,
Marc Schwartz
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:
par(lwd = 3)
barplot(1:5, col = white)
par(lwd = 1)
barplot(1:5, density = 10, add = TRUE)
If you don't need the cross hatching, just use the first two lines.
HTH,
Marc Schwartz
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{red}{ 6.00 } \\
4 d \textcolor{blue}{ 8.00 } \\
5 e \textcolor{blue}{ 10.00 } \\
\hline
\end{tabular}
\end{center}
\end{table}
HTH,
Marc Schwartz
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PLEASE do
convert a character/factor to a Date, you need to specify the format
of the object to be converted:
as.Date(3/4/2007, format = %m/%d/%Y)
[1] 2007-03-04
See ?as.Date and ?strptime for more information and format specifications.
HTH,
Marc Schwartz
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On May 31, 2011, at 8:58 AM, David Winsemius wrote:
On May 31, 2011, at 6:18 AM, Nora M wrote:
Dear Marc Schwartz,
I would also like to request the R code for doing this nominal measure of
association analyses (if you dont mind..)
You should learn to search:
RSiteSearch
the use of ?all.equal due
to:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
HTH,
Marc Schwartz
On May 31, 2011, at 9:52 AM, Alaios wrote:
Thanks alot.
Unfortunately I can not apply this to much bigger matrices as I can not
visually check
looking at FDA panel discussion transcripts, search
for
related general stats terms confined to site:fda.gov
Thanks for your help...
Al
-Original Message-
From: Marc Schwartz [mailto:marc_schwa...@me.com]
Sent: Thursday, May 26, 2011 10:54 AM
To: El-Tahtawy, Ahmed
Cc: r-help@r
of that
code, or does anyone know if the calculation is now available in an R
package?
Please advise. Many thanks.
--John J. Sparks, Ph.D.
John,
The code file in question has been sent offlist to you.
Regards,
Marc Schwartz
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.html
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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timestamp 2011-05-26 08:15:12.005103
HTH,
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
, if the covariate is removed, you of course need to engage in fully
re-evaluating the model. You cannot just drop the covariate and continue to use
model fit assessments made on the full model.
HTH,
Marc Schwartz
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are passing the correct worksheet identifier. Also,
as I am thinking about it, I believe that read.xls() is not set up to handle
XLSX files, so be sure that this is not the case. If so, you will need to
re-save the file to an XLS format file.
HTH,
Marc Schwartz
installation accordingly.
If your output is the result of consolidating multiple such outputs, xtable()
has a matrix method and a data frame method, whereby you could create the
appropriate object as needed and then use xtable() on that.
HTH,
Marc Schwartz
On May 26, 2011, at 10:16 AM, Gabor Grothendieck wrote:
On Thu, May 26, 2011 at 11:09 AM, Marc Schwartz marc_schwa...@me.com wrote:
On May 26, 2011, at 5:09 AM, vioravis wrote:
I am using read.xls command from the gdata package. I get the following
error
when I try to read a work sheet
On May 26, 2011, at 10:04 AM, Mikkel Grum wrote:
Thanks Marc,
I had just come up with another, slightly more convoluted solution. Add as.is
= TRUE to the query and then get the timetoken with
timetoken - df$timestamp[df$timestamp == max(as.POSIX(df$timestamp))]
While it looks like
a
1 NA
2 NaN
3 Inf
4 1
5 2
6 3
Thanks!
Cheers!!
Albert-Jan
The canonical way is to use is.na() to assign the NA value based upon a
condition. See ?is.na for more information.
is.na(df$a) - !is.finite(df$a)
df
a
1 NA
2 NA
3 NA
4 1
5 2
6 3
HTH,
Marc Schwartz
' for data frames,
whereas mean does.
HTH,
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
, there will still be object size limitations predicated
upon the fact that R uses 32 bit signed integers for indexing into objects. See
?Memory-limits for more information.
HTH,
Marc Schwartz
On May 25, 2011, at 8:49 AM, Roman Naumenko wrote:
Thanks Jonathan.
I'm already using RMySQL
from barplots to use point or dot plots
and similar formats, especially where you also need to include some type of
confidence interval for each measure.
HTH,
Marc Schwartz
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upon this 1998 Stata FAQ
recently during a related search:
http://www.stata.com/support/faqs/stat/stepwise.html
and there are more recent literature citations and books that reinforce those
points.
HTH,
Marc Schwartz
On May 25, 2011, at 4:28 AM, linda Porz wrote:
Sorry, I have wrote a wrong
be coerced to 3 (a character 3, not the number 3).
If your actual data contains the same type in each element, replace lapply()
above with sapply() and that will return a vector.
HTH,
Marc Schwartz
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with a newline character ('\n'):
barplot(1:9, names.arg = gsub( , \\\n, speciesnames),
cex.names = 0.5)
That will put the labels on two lines.
See ?gsub and note that I used 3 '\' preceding the 'n'.
HTH,
Marc Schwartz
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On May 23, 2011, at 4:31 PM, David Winsemius wrote:
On May 23, 2011, at 4:32 PM, Marc Schwartz wrote:
On May 23, 2011, at 3:13 PM, Adrienne Keller wrote:
I am making a barplot using barplot2 from gplots and would like to
format the names of my categorical variables (tree species
Another approach, using aggregate(), presuming that the data is in a data frame
called 'DF':
with(DF, aggregate(Var3, list(Var1 = Var1, Var2 = Var2), table))
Var1 Var2 x.D x.I
1 S1 T1 2 2
2 S2 T1 2 2
3 S1 T2 2 2
4 S2 T2 0 4
HTH,
Marc Schwartz
On May 19
of various types, matrices,
data frames and even lists of lists.
A quick example would be objects returned by R's model functions. Run
example(lm) and after the graphs finish, use str(lm.D9) to give an example of
the structure of a somewhat complex list object.
HTH,
Marc Schwartz
column. The vector would be ordered in such a fashion as to match
up with the original rows, based upon Bin and Type.
I am tempted to quote a famous line from Cool Hand Luke, but I'll leave that
for now... :-)
Regards,
Marc Schwartz
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On May 17, 2011, at 2:55 PM, ROLL Josh F wrote:
Marc,
How could I also apply the spline function to each of the 'columns' found in
the result from
tapply(Df$Rate,list(Df$Bin,Df$Type),sum)
??
Something along the lines of the following:
398
See ?split for more information.
HTH,
Marc Schwartz
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that help?
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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at:
https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
a good idea to read news() if running a new version... :-)
See ?RweaveLatex
You can either set:
echo=TRUE, fig=TRUE, label=Fig1, eps=true=
or globally:
\SweaveOpts{eps=true}
HTH,
Marc Schwartz
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https
128 15 75
If you might need something more generalized to handle generating 'raw' data of
various types from a contingency table, search the list archives for the
function expand.dft, which I posted a few years ago and I think found its way
into a couple of CRAN packages.
HTH,
Marc Schwartz
NA
HTH,
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.
for a missing value for this argument.
truehist() does not have a method for Date class objects, but you could do:
truehist(as.numeric(temp))
or perhaps use cut.Date() on the vector and create the intervals/breakpoints
that you wish to use.
HTH,
Marc Schwartz
= 0.9141, df = 1, p-value = 0.339
HTH,
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
the potential confusion over variable
scoping issues, which is why - and - may not be interchangeable as you are
observing.
HTH,
Marc Schwartz
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PLEASE do read the posting
to the core R function.
HTH,
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
to love lists. It will be rewarding! :-)
Fortunes candidate :-)
Cheers,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
for.my.example ~ group
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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)
HTH,
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.
901 902 903 904 905 906 907 908 909 910 ...
$ V200: int 951 952 953 954 955 956 957 958 959 960 ...
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R
output. When
using load(), it restores the saved objects in the file to the current
workspace. If you use:
ls()
you should see 'pcrmodel' listed, along with anything else in your current
workspace.
HTH,
Marc Schwartz
getting summary of model after loading###
summary
, and I need
to convert them to the corresponding 'index' if the 'y' values are removed.
Something like the following might work, if I correctly understand the problem:
match(x, x[-y])
[1] 1 NA 2 3 NA NA 4 5 NA 6
HTH,
Marc Schwartz
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R-help@r
, specifically the assignment variant.
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
/2005-March/067051.html
HTH,
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
] FALSE
Note that this is fine for character and integer values, but should not be
expected to work for floats.
In the latter case, see ?all.equal and R FAQ 7.31: Why doesn't R think these
numbers are equal?
HTH,
Marc Schwartz
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R-help@r
information specific to this function.
HTH,
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
. If by chance you are on a Linux variant, there are binaries available for
selected distributions, but we would need more information to guide you further.
HTH,
Marc Schwartz
P.S. I dropped the R-devel e-mail cc:. Please only send queries to one list.
See the Posting Guide: http://www.R-project.org
If you search the list archives (using keywords such as iPhone or iPad), you
will see extensive discussions on this point.
There is/was an option to install a full R application on so-called jail
broken Apple mobile units **only**. Otherwise, it's client/server.
HTH,
Marc Schwartz
On Mar 2
studies, primarily based upon methods by Bland and Altman.
HTH,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide
:
On Unixen (eg. Linux, OSX)
.Platform$OS.type
[1] unix
and on Windows, will be windows.
If needed, look at the additional functions listed in the See Also on the help
page (eg. ?Sys.info, etc.).
HTH,
Marc Schwartz
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https
and
?segments functions typically serve as the basis for drawing the CIs around the
points representing the means.
HTH,
Marc Schwartz
On Feb 17, 2011, at 2:38 PM, Aldi Kraja wrote:
Hi Toby and Maria,
I did a check on Toby's suggestion and it is not there:
R version 2.12.1 (2010-12-16
by using rpart::FunctionName versus
YourPackage::FunctionName, where FunctionName is the same.
You might want to review The Writing R Extensions manual for more information.
HTH,
Marc Schwartz
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with very
large integers. Perhaps look at gmp and Rmpfr.
You are hitting R's limit of 15 significant digits, resulting in the loss of
precision in the internal representation of the number, which is in turn,
presented in the resultant coercion.
HTH,
Marc Schwartz
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