Hi I have been doing theR-exercises to improve my R programming capabilities.
Data.frame exercise4 showed me that I have a languageproblem. Yes, I am
frustrated, but please don’t take this as acriticism of the R language.
Theroutines I have managed to write do marvelous things in a short per
Hi Ista,
Imagine we have a data set called "all.exposure" with variables
"TX","WTCUT" for a function. The concatenated strings are generated by some
procedure within the function (the dot is used as separator, I can't change
that). Now I want to parse the strings back to the original values as in
> 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:
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:
Your mail to 'R-help' with the subject
Re: [R] with and eva
Hi Carl,
order vs sort
The order function just returns the indices necessary to put the
object into the sorted order, while the sort function returns the
sorted object. If you want to use the order function:
newdf2<-df2[(order(df2[,1]),]
Yes, "with" can be a bit challenging. Think of it as:
with
Following up on this thread, I went with ubuntu. All is good
Many thanks for your responses,
Jack
On Fri, Jun 10, 2016 at 9:54 AM, Leonardo Fontenelle <
leonar...@leonardof.med.br> wrote:
> Em Sex 10 jun. 2016, às 03:58, Rainer M Krug escreveu:
> > Clint Bowman writes:
> >
> > I am reall
I echo Duncan's plea.
But I can easily resolve one question:
"What's with "with? It is one function I do not use because I find it
incomprehensible. "
Consider:
## first, clear the workspace, also known as the Global environment
> rm(list=ls())
## now create a data frame (or list or environme
You don't say where any of this code you are looking at came from, but I
suspect [1]. If you feel the author of that site is failing to explain their
answers sufficiently, please communicate that to them, not us.
I agree that the documentation file for with() is rather opaque to a beginner
and
On 08/09/2016 6:57 PM, Carl Sutton via R-help wrote:
Hi
I have doing the R-exercises to improve my R programming capabilities. Data.frame
exercise 4 showed me that I have a language problem. Here's the problem and my
"solution".
# Exercise 4# Create a simple data frame from 3 vectors. Orde
Hi
I have doing the R-exercises to improve my R programming capabilities.
Data.frame exercise 4 showed me that I have a language problem. Here's the
problem and my "solution".
# Exercise 4# Create a simple data frame from 3 vectors. Order the entire
data frame by the# first column.df2 <- d
Since 2008, Microsoft (formerly Revolution Analytics) staff and guests have
written about R every weekday at the
Revolutions blog: http://blog.revolutionanalytics.com
and every month I post a summary of articles from the previous month of
particular interest to readers of r-help.
And in case you
> On 8 Sep 2016, at 16:25, David L Carlson wrote:
>
> Sampling without replacement treats the sample as the population for the
> purposes of estimating the outcomes at smaller sample sizes. Sampling with
> replacement (the same as bootstrapping) treats the sample as one possible
> outcome of
diffobj provides tools to compare the visual representation of R objects using
the Myer's diff algorithm:
## Example:
> mx1 <- matrix(1:9, 3)
> mx2 <- mx1[-2,]
> diffPrint(mx1, mx2, format="raw")
< mx1 > mx2
@@ 1,4 @@ @@ 1,3 @@
. [,1] [,2] [,3] [,1] [,2
Petr Pikal said:
"The explanation is not for few lines of plain text short mail.
But maybe others will disagree."
Not I -- you should consult your teachers or texts (as Petr said) for
basic statistical questions.
I'll add a nugget to Petr's reply, however: it is very often the case
(for correla
Dear all,
The latest issue of The R Journal is now available at
http://journal.r-project.org/archive/2016-1/
Many thanks to all contributors.
Michael Lawrence
___
r-annou...@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-announce
One way around this would be to use multinomial sampling, but as Stefan
indicated, the maximum number of species at any size will, of course be 40 (in
your example):
> set.seed(42)
> # Generate one sample
> census <- round(rlnorm(40))
> sum(census) # Sample size
[1] 76
> sum(as.logical(census))
Darth:
Please always cc the list if it is not a strictly personal
communication. The information you provide may be relevant and allow
others to help you.
Note also: Jim's suggestion of tuneR was a top hit from the google
search I suggested.
-- Bert
Bert Gunter
"The trouble with having an ope
Hi
see in line
> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Matti
> Viljamaa
> Sent: Thursday, September 8, 2016 2:44 PM
> To: r-help@R-project.org
> Subject: [R] How to interpret lm's coefficients?
>
> I’m trying to understand how to interpret th
On 08/09/2016 10:15 AM, Michael Friendly wrote:
devtools::document() is meant to be used within an R **package**, not
for a standalone file.
Try devtools::create() first.
But at any rate, roxygen format seems to answer your question about
how to describe the
specifications for a collection of
Sampling without replacement will never find more species than there are in
your original sample either!
Sampling without replacement treats the sample as the population for the
purposes of estimating the outcomes at smaller sample sizes. Sampling with
replacement (the same as bootstrapping) t
devtools::document() is meant to be used within an R **package**, not
for a standalone file.
Try devtools::create() first.
But at any rate, roxygen format seems to answer your question about how
to describe the
specifications for a collection of functions written by different
people. Translati
Read the Posting Guide mentioned at the bottom of this message.
Learn how to pose a question online. [1]
Post using plain text format so your code doesn't get damaged by the HTML
formatting.
[1] http://adv-r.had.co.nz/Reproducibility.html
--
Sent from my phone. Please excuse my brevity.
On
I'm trying the example on Hadley's page. I save the following into a file
called "test.R"
#' Add together two numbers.
#'
#' @param x A number.
#' @param y A number.
#' @return The sum of \code{x} and \code{y}.
#' @examples
#' add(1, 1)
#' add(10, 1)
add <- function(x, y) {
x + y
}
Then from
Hi Veronica,
please see inline.
On Thu, 08 Sep 2016, Veronica Andreo writes:
> Hello Luisfo and Enrico,
>
> Thanks for your help! I've been testing both
> solutions... results differ for the same date (I
> changed both functions to use ISO8601). And I added
> contiguous dates, to see how they h
You might also or instead look at the roxygen way of doing things, which
maps to Rd files, but are much easier to write. In R Studio,
Code -> Insert Roxygen skeleton does this for you from an existing
function. See: http://r-pkgs.had.co.nz/man.html
#' title goes here
#'
#' description goes he
Hello Luisfo and Enrico,
Thanks for your help! I've been testing both solutions... results differ
for the same date (I changed both functions to use ISO8601). And I added
contiguous dates, to see how they handle the start-end of the week.
So, here the results:
### one example
d <- c("2010-08-21"
Dear All
x <- CopyDetect2 (data = data.abcd,
item.par = slopintrc,
pair = c (pairs [i, 1], pairs [i, 2]),
options = c ("A", "B", "C", "D", "E"))
What is the mean pair = c (pairs [i, 1], pairs [i, 2]),
Pleas Help Me
Dear Matti
On 08/09/2016 13:06, Matti Viljamaa wrote:
I’m trying to do a t-test, where the null hypothesis for the two data sets has
to be:
“the means are the same”/“difference in means is equal to one”
That is two statements not one. Do you mean that your null is that the
difference is 1?
> On 08 Sep 2016, at 15:48, Michael Dewey wrote:
>
> Dear Matti
>
> On 08/09/2016 13:06, Matti Viljamaa wrote:
>> I’m trying to do a t-test, where the null hypothesis for the two data sets
>> has to be:
>>
>> “the means are the same”/“difference in means is equal to one”
>>
>
> That is two
> On 7 Sep 2016, at 00:07, Nick Pardikes wrote:
>
> Is there any way to use rarecurve to resample a community (row) with
> replacement the same number of times for all 50 communities? With
> replacement is important because the communities differ greatly in their
> size (number of species).
Are
I’m trying to understand how to interpret the return values, specifically
“Coefficients:”, of R’s lm function. I’m using it with a dichotomic predictor
(mom_hs).
lm(data$kid_score ~ data$mom_hs) returns
Coefficients:
# (Intercept) data$mom_hs
# 77.5511.77
I read that the (Interce
You need to include the argument "mu=1" (without parentheses). For example:
> t.test(group1,group2, mu=1)
for a two-sample independent groups t-test. If you type:
> ?t.test
you can see the help information for the t.test function.
RIck
On 09/08/2016 08:06 AM, Matti Viljamaa wrote:
I’m tryin
> Bert Gunter
> on Wed, 7 Sep 2016 23:47:40 -0700 writes:
> "please suggest what can I do to resolve this
> issue."
> Fitting normal mixtures can be difficult, and sometime the
> optimization algorithm (EM) will get stuck with very slow convergence.
> Presumably t
I’m trying to do a t-test, where the null hypothesis for the two data sets has
to be:
“the means are the same”/“difference in means is equal to one”
Using the t.test function in R I’m able to see that it uses the following
“alternative hypothesis”:
alternative hypothesis: true difference in me
Dear Veronica,
Here there's a way of doing what you requested.
library("lubridate")
# your date '2010-08-21' as Date object
dd <- as.Date(strptime("2010-08-21", format="%Y-%m-%d", tz="GMT"))
# take the first day of the year as Date object, i.e. 2010-01-01 in our
example
ref.date <- as.Date(strpt
Hi Nick,
Yes, you are right. There's one small bug on my code.
The 'if' within the for-loop is wrong. Try it now with the code below.
rrarefy.custom <- function (x, sample, rep.param=F)
{
if (!identical(all.equal(x, round(x)), TRUE))
stop("function is meaningful only for integers (counts)
On Thu, 08 Sep 2016, Veronica Andreo writes:
> Hello list,
>
> Is there a quick way to get start and end date (%Y-%m-%d) from ISO
> weeks if I only have dates?
>
> For example, I have this date in which some event happened:
> "2010-08-21". Not only I want the ISO week, which I can obtain either
>
Hello list,
Is there a quick way to get start and end date (%Y-%m-%d) from ISO
weeks if I only have dates?
For example, I have this date in which some event happened:
"2010-08-21". Not only I want the ISO week, which I can obtain either
with isoweek (lubridate) or ISOweek (ISOweek), but I want th
> On Sep 7, 2016, at 1:17 AM, Chinmay Borwankar wrote:
>
> Hi,
>I want to integrate R with ROOTv6.06, which requires that,
>R be built with gcc compiler option "_GLIBCXX_USE_CXX11_ABI=0" .
>I am hoping that if I build R from source then there will be a way to
> do this.
>Is there
Search on the Internet!
"Analyze music in R" had hits for several R packages that seemed like
they might be relevant.
Apologies if you've already done this and found mothing to meet your needs.
Cheers,
Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along
and
"please suggest what can I do to resolve this
issue."
Fitting normal mixtures can be difficult, and sometime the
optimization algorithm (EM) will get stuck with very slow convergence.
Presumably there are options in the package to either increase the max
number of steps before giving up or make th
Hi Darth,
Have a look at the tuneR package.
Jim
On Thu, Sep 8, 2016 at 3:57 PM, darth brando wrote:
> Apologies for the long title but it is semi specific a topic and yes I am a
> noobs user to the system. I have read the guide and will attempt to adhere to
> the guide in this process and I d
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