ckage, along with some hints on generalizing the
approach to a larger number of CSV files.
Perhaps you should review that, and if that is not what you want to do, post
back with more detailed information.
Regards,
Marc Schwartz
__
R-help@r
uencies.
While tabulate() is used within the table() function, reviewing the code for
the latter reveals how the default behavior of tabulate() is modified and
preceded/wrapped in other code for use there.
Regards,
Marc Schwartz
> On Nov 10, 2017, at 8:43 AM, Boris Steipe wrote:
>
>
://www.lindo.com/index.php/ls-downloads?catid=82&id=106:r-lingo-resource-page
You should contact them for support with the product.
5. Even if this was related to R, this appears to be a homework problem of some
type and the R lists do not assist with homework.
Regards,
Marc Schwartz
> On
e.html
<https://cran.r-project.org/web/views/Finance.html>
Regards,
Marc Schwartz
> On Nov 16, 2017, at 11:23 AM, peter dalgaard wrote:
>
> This isn't all that likely to be homework, Bert
>
> However, Alexander, you may find that not many readers are familiar with
Hi Jose,
Just be aware that you sent an e-mail, with a salutation to me specifically, to
a large e-mail distribution list. It would have been better to simply send it
directly to me via the e-mail in the post that you link to below.
The code in question has been available for a number of years
t, as that file will be loaded by default with a new R
session.
Regards,
Marc Schwartz
> On Dec 5, 2017, at 3:37 PM, Bert Gunter wrote:
>
> A guess (treat accordingly):
>
> Different BLAS versions are in use on the two different machines/versions.
> In one, near singulari
plot2 from CRAN (currently ggplot2_2.2.1.zip) with the intent to install it
locally, for example, rather than just using:
install.packages("ggplot2")
as Bert notes below, that might explain the errors.
Amelia, can you provide more details?
Regards,
Marc Schwartz
> On Jan 10,
rhaps even industry
specific insights for you.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-g
e fora.
R Studio is a third party GUI that sits on top of R, it is not R. Thus, "R
studio programs" is not accurate. They are R programs that can be created,
edited and run via the R Studio GUI.
Regards,
Marc Schwartz
__
R-help@r-project.org m
first step.
For future reference, since you are running on RH, there is the R-SIG-Fedora
list, which covers issues associated with running R on RH and Fedora based
distros:
https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
Regards,
Marc Schwartz
> On Jan 19, 2018, at 9:57 AM, Daniel Kin
age is a link to
"Getting Help", which takes you to:
https://www.r-project.org/help.html
and provides a series of pointers relative to seeking help with R.
Regards,
Marc Schwartz
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ded, whether the offset was part
of the formula or specified as a separate argument.
You can then process the results as you need from there, such as:
> sapply(mx$data, class)
D x f Y
"integer" "numeric" "factor" "numeric"
ordant and discordant pairs. Then its
> pretty easy.
>
> jeff
>
Hi Jeff,
Take a look at my Github Gist here:
https://gist.github.com/marcschwartz/3665743
I have b and c (among other measures), and supporting functions to calculate
concordant and discordan
class = "data.frame", row.names = c(NA, -6L))
> fisher.test(tab)
Error in fisher.test(tab) : Bug in FEXACT: gave negative key
Note that in the second example, the data frame is coerced to a matrix inside
fisher.test().
The above two examples were run using R version 3.3.3 on macO
] 683429
The last step takes the date and coerces it to a numeric value in the number of
days since the origin.
More generally, if you Google for R MATLAB, there are some online references
that provide varying levels of function mappings between the two languages that
you may find helpful.
Regards
ance
<https://stat.ethz.ch/mailman/listinfo/r-sig-finance>
and you would avail yourself of a focused audience in the domain using that
list, as opposed to R-Help for these types of questions.
Hopefully this will get you moving forward.
Regards,
Marc Schwartz
[[alternative HTML vers
> On Apr 5, 2017, at 11:34 AM, Tunga Kantarcı wrote:
>
> Thanks a lot Marc, for informing that R is object oriented, implying
> that one should always try to vectorise the code (although I am not so
> clear why this should be the case) but also for all the references you
> provide.
Hi,
The r
> On Apr 5, 2017, at 11:41 AM, Tunga Kantarcı wrote:
>
> OK I cannot figure this out clearly in the guidelines of posting. When
> I reply to a message I should out "Re:" in front of the subject line
> of the original post. So if the subject line of the original post it
> is "this is a post", the
more to learn more about this. This
> list cannot provide such extended explanation.
>
> Cheers,
> Bert
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
> and sticking things into it."
> -- Opus (aka B
> On Apr 5, 2017, at 1:26 PM, Tunga Kantarcı wrote:
>
> My question is specifically about what I should use in the subject
> line when replying, because I do not trust mail clients, or to myself
> as I use different clients sometimes. Hence, I wanted to learn a
> client free solution to correctl
xactly the same as the first
call, other than setting legend to FALSE in the first case. Any change in
legend content between the two calls will alter the size and position of the
enclosing box.
par(xpd = TRUE)
legend(BOX$left, y = -0.25, legend =
> On May 11, 2017, at 7:01 PM, Duncan Murdoch wrote:
>
> On 11/05/2017 2:36 PM, Antonio Silva wrote:
>> Hello r-users
>>
>> I want to plot some barplots inside a looping with the legend placed
>> outside the plotting area.
>>
>> No matter the number of bars I want the legend to be placed cente
artyn provided a resolution in the follow up post, including a pointer to the
EPEL, where there are pre-compiled RPMs for R.
For future reference, there is a dedicated e-mail list for queries pertaining
to R on RH/Fedora based distributions:
https://stat.ethz.ch/mailman/li
.
>
> Apologies if this is a duplicate. I sent my first response with the wrong
> email address.
>
>
> On Tue, May 23, 2017 at 12:50 PM, Marc Schwartz
> wrote:
>
>>
>>> On May 23, 2017, at 11:07 AM, David Chin
>> wrote:
>>>
>>>
> is.vector(y)
[1] FALSE
Nor can a vector contain multiple NULLs:
y <- c(NULL, NULL, NULL)
> y
NULL
> length(y)
[1] 0
Similarly:
y <- c(1, NULL, 1)
> y
[1] 1 1
> length(y)
[1] 2
Perhaps reviewing ?NULL as well as:
https://cran.r-project.o
ries and how that
affects the relevance/applicability of the model.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-
pROC) may interact, but look at the ?smooth
function in the latter package to see if it might help.
To your second point, if your plot is a png/jpg file, you could attach it to
your post here, if that was your desire. Otherwise, you could post it to a
cloud based repository, like Dropbox, and provid
Using the 'smooth' function:
>
> plot(c(1,0),c(0,1), type='l', lty=3, xlim=c(1.01,-0.01), ylim=c(-0.01,1.01),
> xaxs='i', yaxs='i', ylab='', xlab='')
> plot(smooth(roc_1),col="brown3", lwd=2, add=T, lty=1)
&g
ot;f" "g" "h" "i" "j"
> #==
>
See the 'stringsAsFactors' argument in ?data.frame.
dat1 <- data.frame(aa = letters[1:10], stringsAsFactors = FALSE)
> str(dat1)
'
o explicitly set
such vectors to character, or to use I(...) to create AsIs class columns.
Regards,
Marc
>
>
>
> On Friday, July 7, 2017, 10:37:29 AM EDT, Marc Schwartz
> wrote:
>
>
>
> > On Jul 7, 2017, at 6:03 AM, John Kane via R-help
> > wrote:
Bert,
The 'degree' argument follows the "..." argument in the function declaration:
poly(x, ..., degree = 1, coefs = NULL, raw = FALSE, simple = FALSE)
Generally, any arguments after the "..." must be explicitly named, but as per
the Details section of ?poly:
"Although formally degree should
gt; attr(,"degree")
> [1] 1 2 1 2 2
> attr(,"coefs")
> attr(,"coefs")[[1]]
> attr(,"coefs")[[1]]$alpha
> [1] 0.5477073 0.4154115
>
> attr(,"coefs")[[1]]$norm2
> [1] 1. 20. 1.55009761 0.08065872
>
>
rval
> findInterval(rand, boundaries)
[1] 6
There are various function arguments as well, relative to how to deal with the
interval boundaries, as described on the help page.
Regards,
Marc Schwartz
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hat 3.2+ should be ok. If so, I
>would recommend installing the R RPMS for 3.4.0 from the EPEL and save
>yourself the hassle and potential issues of building from source.
Regards,
Marc Schwartz
__
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roblematic and from a quick check here,
glm(..., family = binomial) does not issue a warning or error in the case where
the dependent variable has >2 levels.
Regards,
Marc Schwartz
> On Jul 27, 2017, at 8:26 AM, john polo wrote:
>
> Michael,
>
> Thank you for the suggesti
o my original email might not have been my final step before
> using glm. Thank you for reminding of the potential problem.
>
> I think Michael Friendly's idea is probably the solution I need to consider.
> I am simplifying my factors a little bit and revising which I will keep.
an 'alfa':
plot(c(1,20),c(1,20), xlab = expression(alpha))
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.
ny of the above, so cannot speak for either ease of use or the
validity of the tools.
There is also a general resource here:
https://www.lifewire.com/accdb-file-2619459
The OpenOffice/LibreOffice based options listed there are likely more work than
they are worth.
Regards,
Marc Schwartz
__
t;
>
> However, above code is only extracting the integer part.
>
> Could you please help how to achieve that. Thanks,
Using ?gsub:
X <- "\"cm_ffm\":\"563.77\""
> gsub("[^0-9.]", "", X)
[1] "563.77"
or
> gsub
> On Aug 2, 2017, at 7:42 PM, Marc Schwartz wrote:
>
>
>> On Aug 2, 2017, at 6:59 PM, Christofer Bogaso
>> wrote:
>>
>> Hi again,
>>
>> I am struggling to extract the number part from below string :
>>
>> "\"cm_ffm\"
Thanks Bert.
I should probably also explicitly mention that if Christofer wants to
ultimately coerce the numeric components of the strings to numeric data types
for subsequent mathematical operations, you will need to strip the commas
anyway.
In that case, my first response, where I did not i
ng Help With R page, linked on the main R Project page:
https://www.r-project.org/help.html <https://www.r-project.org/help.html>
Regards,
Marc Schwartz
>
> On Thursday, August 24, 2017, 6:19:25 AM EDT, John Kane
> wrote:
>
>
>
>
> On Thursday, August 24,
Users:
https://www.amazon.com/gp/product/1461406846/
<https://www.amazon.com/gp/product/1461406846/>
While it is now a few years old, it is still relevant in terms of pointing you
in the direction of basic and conceptual linkages between the languages.
Regards,
Marc Schwartz
> On
y you will know, given your function, if that might result in problems in
whatever result your function is intended to generate.
Regards,
Marc Schwartz
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be available via the EPEL testing repos.
Otherwise, you can wait until it is available via release in the next day or
so, or download the RPMS directly here:
http://koji.fedoraproject.org/koji/buildinfo?buildID=762521
Regards,
Marc Schwartz
__
R-he
(.Deb).
Your ability to upgrade on Debian is not relevant to his issue, as a completely
different infrastructure (RPM based repositories) is required for RHEL if one
wishes to install pre-compiled binaries, as opposed to building from source,
which is also an option if one wishes.
Regards,
s.
Neither one.
You should be posting to R-SIG-Fedora:
https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
Please re-post there as both RH/Fedora users and the RH RPM maintainers read
that list, should there be issues with the EPEL RPMs relative to dependencies.
Regards,
Marc Schwartz
A Hernández
See:
https://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
Also, note that as per the Value section of ?as.integer:
"Non-integral numeric values are truncated towards zero..."
> print((3/10) / 0.1, 20)
[1] 2.
, of course, presumes that the combination of CustId and CustName are
uniquely associated with each other.
Regards,
Marc Schwartz
> On Jun 8, 2016, at 8:55 AM, g.maub...@weinwolf.de wrote:
>
> Hi Petr,
>
> thanks for your reply.
>
> I prepared little example for you:
>
&
package and is not indicated as being a dependency
for aplpack.
Regards,
Marc Schwartz
> On Jun 9, 2016, at 9:00 AM, Tom Wright wrote:
>
> Assuming you are on a mac this link may be of assistance:
> http://tips.tutorialhorizon.com/2015/10/01/xcrun-error-invalid-active-developer-
521.html
If memory serves, that code has made its way into one or more packages on CRAN
but I don't recall which at the moment.
Regards,
Marc Schwartz
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the second edition on Amazon.com
would suggest that it was removed for the second edition.
Regards,
Marc Schwartz
> On Jun 21, 2016, at 8:29 PM, Ashim Kapoor wrote:
>
> I am reading the book An R and S plus companion to Applied Regression and I
> found this function there.
>
&g
Would really appreciate
> your help on this. Thanks in advance
> --
> Syeda Sana Fatima
Hi,
Shiny is a third party application that has its own dedicated support vehicles
at:
http://shiny.rstudio.com/help/
You should leverage those resources, as it is off-topic for R-Help.
Regards,
by the associated print method for the
object class, you can modify things to fit your need by creating, if need be,
your own functions to modify the required part or parts of the object itself
and then output them.
If you want to understand what summary.glht() is doing, take the same appro
olumn
order, column types), it may be prudent to do your own pre-allocation of a data
frame that is the target row total size and then "insert" each "sub" data frame
by using row indexing into the target structure.
Regards,
Marc Schwartz
> On Jun 27, 2016, at 11:5
different CRAN mirror, including one that is not
secure http (regular http:// URL) to see if that works.
Also, note that the version of R that you are running (3.0.2) is from Sep of
2013, so quite dated. The current version is 3.3.1, which was just released
this month.
Regards,
Marc Schwartz
__
Hi,
Just to augment Bert's comments, I presume that you are aware of the relevant R
FAQ:
https://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-doesn_0027t-R-think-these-numbers-are-equal_003f
That you had an expectation of the difference being 0 suggested to me that you
might not be, but my apo
3.3.1 is in the R build queue, which
can be viewed at:
https://bodhi.fedoraproject.org/updates/?packages=R
Regards,
Marc Schwartz
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P
r, the true source code is available via the package source tarball
(.tar.gz file) on CRAN:
https://cran.r-project.org/web/packages/jvnVaR/index.html
The tarball will include any comments/annotations in the code and the source
for any compiled code that ma
z <- seq(from = -5, to = 5)
barplot(z, col = ifelse(z > 0, "brown", "green"))
Regards,
Marc Schwartz
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PLEASE do
r all labels to display given the large number of
bars. The cex* family of graphic parameters can be helpful. See the arguments
in ?barplot and in ?par for more information.
Regards,
Marc Schwartz
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Hi,
If your code below is a verbatim copy and paste, you still have the following
two lines active:
par(mar=rep(2,4))
and
op <- par(oma=c(1,2,3,5))
Comment out both of those lines and then see what the result looks like.
As I noted before, try the plot **without any modifications** to th
place when
> adjusting mar values.
>
> A remaining need is to have the x axis at least for the two bottom figures as
> date from 1981 to 2005. Do you think this is doable. Ylim is fine but how
> tots in this case xlim.
>
> Best regards,
>
> asarr
> Le 25 juil. 2016
016-05-30 Monday
2 2016-05-30 Monday
3 2016-05-30 Monday
4 2016-05-30 Monday
5 2016-05-30 Monday
6 2016-05-30 Monday
I would check to be sure that you do not have any typos in your code.
Regards,
Marc Schwartz
> On Jul 26, 2016, at 6:58 AM, Shivi Bhatia wrote:
>
> Hello Again
;[^0-9]", "", x)
>
> However, it strips my numbers of "."
>
> Help - how could I do the same but leave the "." in?
>
> Thanks a lot!
>
> --
> Dimitri Liakhovitski
> gsub("[^0-9\\.]", "
> On Jul 26, 2016, at 4:39 PM, Marc Schwartz wrote:
>
>
>> On Jul 26, 2016, at 4:28 PM, Dimitri Liakhovitski
>> wrote:
>>
>> Hello!
>>
>> I have a string x:
>> x <- c("x - 84", "y - 293.04", "z = 12.5")
>
ctional and philosophical difference
between FOSS and Freeware.
Regards,
Marc Schwartz
> On Jul 27, 2016, at 9:47 AM, John C Frain wrote:
>
> When I first graduated some 50 years ago I worked in the Department of
> Finance. On small piece of my work involved getting CPI data from the
one or more times at the end of the
character string.
Note that as per ?regex, it is [:space:], not [:blank:] and the brackets need
to be doubled in the regex to define the enclosing character group. An example
would be:
sub("[[:space:]]+$", "", str) ## white space, POSIX-style
current stable release of R.
A search using http://rseek.org would suggest that the test is available in
other packages on CRAN.
You may also wish to search the R-Help archives to see frequent discussions on
the utility (or primarily the lack thereof) of normality tests...
Regards,
Marc Schwart
Week 52 Dose 2 B 9
11 Week 32 Dose 3 B7
12 Week 52 Dose 3 B 10
13 Week 32 Dose 1 C 11
14 Week 52 Dose 1 C 13
15 Week 32 Dose 2 C7
16 Week 52 Dose 2 C 16
17 Week 32 Dose 3 C8
18 Week 52 Dose 3 C 16
Regards,
Marc Schwartz
g versus the pre-existing "brand name" version of the drug to
demonstrate that they have equivalent efficacy and safety profiles, within a
clinically acceptable range.
There is at least one R package that is relevant, conveniently called
"equivalence":
https://cran.r-proje
n an R
instance remotely from a server and/or via desktop VM clients that can run on
mobile devices (e.g. Parallels). A Google search brings up some links from the
RStudio support forums and you may want to search those separately.
Regards,
Marc Schwartz
__
> On Sep 8, 2016, at 7:35 PM, Bert Gunter wrote:
>
> To all:
>
> r-help has been holding up a lot of my recent messages: Have there
> been any changes to help list filters that caused this? Is there
> something I'm doing wrong? -- I have made no changes that I am aware
> of. Here's what I get:
bscribers can help you, but be sure to indicate how you
installed the version of R that you are currently using when you post there.
Regards,
Marc Schwartz
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reporting/OLAP tools like
Cognos, Business Objects, Crystal Reports, etc.
The first thing that came to mind is RStudio's Shiny, which I do not use, but
their gallery seems to have some possibilities:
http://shiny.rstudio.com/gallery/
Regards,
Marc Schwartz
> On Sep 13, 2016, at
lone or within a
browser based environment, but it would not be "pure R" per se.
It may also be possible that one of the other commercial R vendors (e.g.
Microsoft) have built something on top of a server version of R and you would
need to contact them to see if that is the case.
Re
egression models and the like.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and pr
t; is.finite(x)
[1] FALSE FALSE FALSE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE
[12] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE
[23] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE
[34] TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE
Regards,
Marc
2
> agrep("What a nice day today Story of happiness Part 2", c(Vec1, Vec2),
value = TRUE)
[1] "What a nice day today! - Story of happiness: Part 2."
[2] "What a nice day today: Story of happiness (Part 2)”
Also, possibly:
http://cran.r-project.org/web/packa
s the same colors in each stack by
default. This is not always easy if the differences are subtle, similar to the
issues with pie charts.
I would not advocate changing the current behavior, as a lot of long standing
code would break, including functions in packages that are built on top of
barpl
if there are any
alternatives that would work for you:
http://cran.r-project.org/web/views/HighPerformanceComputing.html
Regards,
Marc Schwartz
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quot;Mean=", center, "\n", "SD=", spread, "\n")
> } else if (print & npar) {
>cat("Median=", center, "\n", "MAD=", spread, "\n")
> }
> result <- list(center=center,spread=spread)
> return(result)
>
your vectors are stored, might be:
> sapply(big.char, get, pos = 1)
dog cat tree
[1,] 1 25
[2,] 2 36
[3,] 3 47
which specifies which environment to search for the named objects and the cat()
function is not returned since it is in namespace:base.
See ?get
Regards,
Marc
Hi,
Given that a data frame is a list:
unlist(mydata[, 1:3])
For example:
> all(unlist(iris[, 1:3]) == do.call(c, iris[, 1:3]))
[1] TRUE
Also, note that the returned result in both cases above retains names:
> unlist(iris[, 1:3])
Sepal.Length1 Sepal.Length2 Sepal.Length3 Sepal.Leng
cript
> print string
>
> What happens is that string 2 is splits into "This" and "doesn't". Does
> anyone know how to resolve this issue? Of course I can remove the white
> spaces, but that may be somewhat inconvenient.
>
> Thanks for any help.
ply(list.files(path = “Path/To/Your/RD/Files", pattern = ".Rd"),
showNonASCIIfile)
See ?list.files and ?showNonASCIIfile
Regards,
Marc Schwartz
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3.0 5.9 2.1 virginica
104 6.3 2.9 5.6 1.8 virginica
105 6.5 3.0 5.8 2.2 virginica
106 7.6 3.0 6.6 2.1 virginica
Regards,
Marc Schwartz
___
> On Jun 10, 2015, at 2:21 PM, Marc Schwartz wrote:
>
>
>> On Jun 10, 2015, at 7:39 AM, Liz Hare wrote:
>>
>> Hi R-Experts,
>>
>> I have a data.frame like this:
>>
>>> head(map)
>> chr snp poscm posbpdist
>> 1
is issue:
https://stat.ethz.ch/pipermail/r-help//2014-November/423169.html
which also raises the issue of why SPSS is requiring such an old version of R.
As to how to accomplish what Peter references, a Google search is likely to be
enlightening.
Regards,
Marc Schwartz
9 0.4734006
But unless your vector is very large, I suspect the performance gain may be
minimal in real time.
Regards,
Marc Schwartz
> On Jun 18, 2015, at 3:07 PM, Bert Gunter wrote:
>
> Your **is** the "coolest" and most efficient way to do this. It's
> vectorized
7 8 9 10 11
# This is a vector, not a list
> str(mat[-nrow(mat), ])
int [1:11] 1 2 3 4 5 6 7 8 9 10 …
> mat[-nrow(mat), , drop = FALSE]
[,1]
[1,]1
[2,]2
[3,]3
[4,]4
[5,]5
[6,]6
[7,]7
[8,]8
[9,]9
[10,] 10
[11,] 11
# This is a matrix
> s
be present for the July 3,
2015 dated file versions. So something happened over the weekend on the main
CRAN server it would seem, depending upon the regen cycle timing.
I tried two different browsers, with refreshes, in case there was a caching
issue of sorts
weets <- list("I like google", "Hi Google google", "what's up”)
> Tweets
[[1]]
[1] "I like google"
[[2]]
[1] "Hi Google google"
[[3]]
[1] "what's up”
> sapply(Tweets, function(x) grepl("google",
Hi,
In addition to Terry’s great comments below, as this subject has come up
frequently over the years, there is also a great document by Bill Venables that
is valuable reading:
Exegeses on Linear Models
http://www.stats.ox.ac.uk/pub/MASS3/Exegeses.pdf
Regards,
Marc Schwartz
> On
s://www.r-project.org/certification.html
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-project.org/posting-g
you can get to a different server, try it to see what happens.
Regards,
Marc Schwartz
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PLEASE do read the posting guide http://www.R-
ched version.
Presuming local compilation, I would check your configure and build logs for
warnings/errors. It is possible that you are missing an X11 header or lib
someplace.
Regards,
Marc Schwartz
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ething along the lines of:
mean(subset(brady.t, (G. == 1) & (Year != 2014), select = Yds)[[1]])
Basically, subset() is returning a data frame where Year does not equal 2014
and G. is equal to 1. The select argument is only returning the Yds column,
which would otherwise be a list,
ably, because the survivorship function never crosses below 0.5. You may
need to refresh yourself on the definition of median survival.
Plot the curves to visually confirm.
Regards,
Marc Schwartz
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In addition, there are documents here:
https://www.r-project.org/certification.html
that cover R’s SDLC (Software Development Life Cycle) that may be helpful.
Regards,
Marc Schwartz
> On Aug 5, 2015, at 12:19 PM, Martin Morgan wrote:
>
> On 08/05/2015 10:08 AM, Jeff Newmil
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