Displaying 20 results from an estimated 10000 matches similar to: "aggregate for zoo or its?"
2010 Jun 10
2
[R[ dates on zoo objects
Dear R People:
I have a zoo object with its date index as a factor.
> xAle1.zoo$index
Error in xAle1.zoo$index : $ operator is invalid for atomic vectors
> str(xAle1.zoo)
Class 'zoo' atomic [1:32] 1253 1316 1038 1157 1710 1489 1159 1142 945 1245 ...
..- attr(*, "index")= Factor w/ 32 levels "04/16/09","04/17/09",..:
1 2 3 4 5 6 7 8 9 10 ...
>
2010 Jun 02
2
building time series/zoo/its from a data frame
Dear R People:
I have the following data frame:
> x.df
date cond freq
1 04/01/09 Fever 12
2 04/02/09 Fever 11
3 04/03/09 Fever 10
4 04/04/09 Fever 13
5 04/05/09 Fever 6
6 04/01/09 Rash 6
7 04/02/09 Rash 10
8 04/03/09 Rash 9
9 04/04/09 Rash 10
10 04/05/09 Rash 8
11 04/01/09
2013 Jan 09
1
R2html and Blackboard LMS : solved
Everything is ok on Firefox, IE, and iPad.
Thanks,
Erin
On Tue, Jan 8, 2013 at 7:58 PM, Erin Hodgess <erinm.hodgess at gmail.com> wrote:
> Dear R People:
>
> Has anyone used R2HTML in web files that were on the Blackboard LMS, please?
>
> I'm starting to do these but wanted to know if there were any
> potential pitfalls.
>
> Thanks,
> Erin
>
>
> --
2010 Apr 20
1
converting a zoo or an xts to a data frame
Dear R People:
I have the following code that I use to convert a monthly zoo object
to a data.frame, and it works perfectly:
library(tseries)
z <- get.hist.quote(instrument=inst1, start=start1,end=end1,
quote=quot1,comp = "m")
y <- as.ts(aggregate(z, as.yearmon, tail, 1))
y.df <- data.frame(y=y,time=time(y))
y.df$x <- ts(y.df[,1])
tsp(y.df$x) <-
2017 Aug 17
1
really dumb question with building/creating a new package.
Thank you!
On Thu, Aug 17, 2017 at 4:55 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:
> r-package-devel is probably a better place to post this, especially if
> you do not get a satisfactory reply here. This list is about R
> programming, as you presumably know; your query is not.
>
> Cheers,
> Bert
>
>
> Bert Gunter
>
> "The trouble with having
2010 Aug 01
1
aggregating a daily zoo object to a weekly zoo object
Dear R People:
I'm trying to convert a daily zoo object to a weekly zoo object:
xdate <- seq(as.Date("2002-01-01"),as.Date("2010-07-10"),by="day")
library(zoo)
length(xdate)
xt <- zoo(rnorm(3113),order=xdate)
xdat2 <- seq(index(xt)[1],index(xt)[3113],by="week")
xt.w <- aggregate(xt,by=xdat2,mean)
Error: length(time(x)) ==
2019 Mar 04
1
Problem with compiling OpenBLAS to work with R
>>>>> Erin Hodgess
>>>>> on Fri, 1 Mar 2019 12:30:35 -0700 writes:
> Yay! I re-installed everything and got through "Make
> distribution"! I have one more question, please: I am
> running the make check-all. I have an error at reg-1d.
> It stops the process. However, the mean difference (as
> per the file) is
2017 Dec 21
3
Building R from source with the PGI compiler
Hello
I would like to build R from source and use the PGI compiler, rather than
the GCC compiler.
I saw the instructions for the Intel compiler in the R Installation Manual,
but I didn't see the PGI. I tried a few times without instructions, but
without success.
Any suggestions would be most welcome. Also, I hope this is the right
group for the question.
Sincerely,
Erin
--
Erin
2010 Jun 21
3
tables
Dear R People:
I have generated the following table:
> table(zza$DEATH,zza$GENDER)
F M
2009-04-21 0 1
2009-04-22 4 2
2009-04-24 6 0
2009-04-25 1 3
2009-04-26 2 0
2009-04-28 3 0
2009-04-29 2 2
However, instead of total counts in the F and M columns, I would like percents.
How would I do this, please?
thanks,
Erin
--
Erin
2010 Dec 17
4
using ls() to find a function
Dear R People:
Is there a way to find which objects are functions via ls(), please?
I'm sure that there is, but I'm not sure how.
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com
2010 Nov 13
2
R on an iPad
Dear R People:
Is it possible to run R on an iPad, please?
For some reason, I'm thinking that you can't have Fortran, C, etc., so
you can't do it.
But I thought I would check anyway.
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com
2011 Mar 07
4
attr question
Dear R People:
When I want to produce a small sample confidence interval using
t.test, I get the following:
> t.test(buzz$var1, conf.level=.98)$conf.int
[1] 2.239337 4.260663
attr(,"conf.level")
[1] 0.98
How do I keep the attr statement from printing, please? I'm sure it's
something really simple.
Thanks,
Sincerely,
Erin
--
Erin Hodgess
Associate Professor
Department
2011 Oct 19
3
converting string fractions to numerics
Dear R People:
Suppose I have the following:
"pi/2"
and I would like it to be 1.57.....
Using as.numeric, here is my result:
> as.numeric("pi/2")
[1] NA
Warning message:
NAs introduced by coercion
>
Is there a way to produce the numeric result, please?
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of
2012 Mar 15
4
replicating C example from the Extensions Manual problem
Dear R People:
Here is something that I am sure is very simple. I'm just trying to
re-create the C convolution example in the Extensions manual. Here is
the subroutine:
void convolve(double *a, int *na, double *b, int *nb, double *ab)
{
R_len_t i, j, nab = *na + *nb - 1;
for(i = 0; i < nab; i++)
ab[i] = 0.0;
for(i = 0; i < *na; i++)
for(j = 0; j < *nb; j++)
ab[i + j] += a[i] *
2011 Jun 21
5
omitting columns from a data frame
Dear R People:
I have a data frame, xm1, which has 12 rows and 4 columns.
If I put is xm1[,-4], I get all rows, and columns 1 - 3, which is as
it should be.
Now, is there a way to use the names of the columns to omit them, please?
Thanks so much in advance!
Sincerely,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
2008 Mar 18
3
Tcl/tk question
Dear R Gurus:
What is the name of the person who has all of the Tcl/tk stuff,
please? I know it's James W, but can't remember his last name.
I wanted to look at some of his examples.
Thanks in advance!
Sincerely,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com
2012 Feb 23
1
R CMD INSTALL with configure args
Dear R People:
I have a question, please:
I want to install a package from R CMD INSTALL and I have a boatload
of configure args. I want to put them into a file. How do I point
the R CMD INSTALL to that file, please?
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com
2008 Oct 29
6
substring/strsplit question
Dear R People:
Here is a toy example:
> x <- c("2E","5W","12H")
> substr(x,2,2)
[1] "E" "W" "2"
>
Sometimes x has 3 elements, sometimes 2. I want to extract the last
element, and then extract the other 1 or 2 elements.
How can I do this, please?
TIA,
Sincerely,
Erin
--
Erin Hodgess
Associate Professor
Department of
2008 Oct 15
4
a really simple question on polynomial multiplication
Dear R people:
Is there a way to perform simple polynomial multiplication; that is,
something like
(x - 3) * (x + 3) = x^2 - 9, please?
I looked in poly and polyroot and expression. There used to be a
package that had this, maybe?
thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at
2019 Feb 28
3
Problem with compiling OpenBLAS to work with R
I believe that repo just follows the directions on my blog. Without seeing
Dr. Hodges?s code, my initial concern is the many references to Cygwin. My
method specifically does not use Cygwin but MSYS2 and Mingw64/Rtools35.
That will likely change to solely Rtools40 once R3.6 is released due to the
Msys system being built in to it.
There may be some library conflicts between Cygwin and