Displaying 20 results from an estimated 10000 matches similar to: "Changing pch spacing"
2003 Jan 03
4
factor analysis (pca): how to get the 'communalities'?
Dear expe-R-ts,
I try some test data for a factorAnalysis (resp. pca) in the sense of Prof.
Ripley's MASS ? 11.1, p. 330 ff., just to prepare myself for an analysis of my
own empirical data using R (instead of SPSS).
1. the data.
## The test data is (from the book of Backhaus et al.: Multivariate ##
Analysemethoden. Springer 2000 [9th ed.], p. 300 ff):
2020 May 05
1
Use of MathJax (or something similar) in .Rd files
Hi All,
After some tinkering, and with support from Duncan, I put together a package that allows for easy inclusion of MathJax equations in Rd files. The package has been submitted to CRAN, but those who want to try this out already can get it here:
https://github.com/wviechtb/mathjaxr
or in other words:
install.packages("remotes")
2020 Apr 30
2
Use of MathJax (or something similar) in .Rd files
Thanks Gabor and Duncan! It works. For those interested, I added this to the beginning of the \details{} section:
\if{html}{\out{
<script id="MathJax-script" async
src="https://cdn.jsdelivr.net/npm/mathjax at 3/es5/tex-mml-chtml.js">
</script>
}}
And then I can use:
\if{html}{\out{\(B_{x(a,b)} = \int_0^x t^{a-1} (1-t)^{b-1} dt\)}}
or
2017 Jun 22
1
Compiling R-devel - missing some expected features (zlib, bzlib, lzma, PCRE)
Hi All,
I am compiling R-devel on Linux (Ubuntu 16.04.2) and that works just fine, but I am missing some of the expected features, as shown here:
https://cran.r-project.org/doc/manuals/r-devel/R-admin.html#Linux
In particular, after configure (using all defaults), I see:
R is now configured for x86_64-pc-linux-gnu
[...]
Interfaces supported: X11
External libraries:
2002 Oct 31
0
Changing pch spacing]
Wolfgang Viechtbauer wrote:
> Hello R-Helpers,
>
> plot(x, y, type="b", pch="1")
>
> plots x vs. y with both a line and the symbol "1" but how do I change
> the "spacing" of the symbol being plotted. In other words, I don't want
> to plot the "1" at every data point, but only at every kth point (things
> get too
2003 Feb 02
3
Finding Missing Data Patterns
Dear R-Helpers,
I have a large data matrix, which contains missing data. The matrix
looks something like this:
1) X X X X X X NA NA NA
2) NA NA NA NA X X X X X
3) NA NA X X X X NA NA NA
4) X X X X X X X X X
5) X X NA NA X NA NA NA NA
and so on. Notice that the first row starts with complete data but ends
with missing. The second row starts with missing, but the rest is
2020 Jun 21
1
Possible bug in heatmap()?
Dear All,
There might be a bug in heatmap():
x <- matrix(rnorm(10*5), 10, 5)
heatmap(x, labCol=1:5)
Error in axis(1, 1L:nc, labels = labCol, las = 2, line = -0.5, tick = 0, :
'at' and 'labels' lengths differ, 5 != 10
Works fine under 4.0.1. Looking at the code from 4.0.1 vs. Rdevel, esp. this part sticks out:
labRow <- labRow[rowInd] %||% rownames(x) %||%
2002 Aug 09
2
Help with improving efficiency
Dear All,
I have a problem that I think could be solved much more efficiently, but
I don't have a clue how to accomplish this. I have a matrix W with
dimensions k*(p+1):
Let's say W is 5*4 and looks like this:
> W
[,1] [,2] [,3] [,4]
[1,] 1 -1 -1 1
[2,] 1 1 1 1
[3,] 1 2 -2 -1
[4,] 1 0 -1 -1
[5,] 1 -2 -1 0
I want to take
2002 Aug 24
2
Density of non-central t distribution
Hello Everybody,
Is there a function available for calculating the density of a
non-central t distribution? (dt does not accept the ncp option).
Thanks in advance!
--
Wolfgang Viechtbauer
"Are you not thinking what I am not thinking?"
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read
2020 Apr 30
2
Use of MathJax (or something similar) in .Rd files
Interesting. I gave this a try, but couldn't make this work. One would have to infuse something like
<script id="MathJax-script" async
src="https://cdn.jsdelivr.net/npm/mathjax at 3/es5/tex-mml-chtml.js">
</script>
or
<script id="MathJax-script" async
src="<url-to-your-site>/mathjax/tex-chtml.js">
</script>
into
2012 Sep 26
3
Broken Links on http://www.r-project.org
I was not sure who I should contact about this, so I am posting this here.
There are a few broken links on the R website.
1) http://www.r-project.org/search.html -> link to the Nabble R Forum. I belive the correct/new URL should be: http://r.789695.n4.nabble.com/
2) http://www.r-project.org/other-docs.html -> link to "Auswertung ?kologischer Daten". Not sure if there is a new
2020 Apr 30
3
Use of MathJax (or something similar) in .Rd files
Hello All,
I am wondering if there has ever been any discussion/consideration given to incorporating MathJax (or something similar) into R for rendering equations in .Rd files. I know that equations are rendered beautifully in the pdf manuals, but I suspect the majority of users primarily look at the html help files when using R. While I am comfortable reading something like "B_x(a,b) =
2010 Jul 02
1
metafor and meta-analysis at arm-level
Hi,
I have been looking for an R package which allowed to do meta-analysis
(both pairwise and network/mixed-treatment) at arm-level rather than at
trial-level, the latter being the common way in which meta-analysis is
done.
By arm-level meta-analysis I mean one that accounts for data provided at
the level of the individual arms of each trial and that does not simply
derive the difference between
2002 May 28
4
Indexing Elements of a Dataframe
Hello List-Members,
Let's say that I have the following code:
for (i in c(10, 20, 30)) {
for (j in c(200, 400, 600)) {
...
...
x <- "something"
* (code here)
}
}
* Now, x is some result that I want to put into a results "matrix" that
looks like this:
200 400 600
10
20
30
I came up with an ad-hoc solution adding some counters (called
2015 May 13
4
CRAN check for package on Sparc Solaris
Dear All,
The metafor package currently fails CRAN checks on Sparc Solaris:
http://cran.r-project.org/web/checks/check_results_metafor.html
The problem is probably due to an unintended (= stupid) use of identical() in a couple tests. I have changed that to more appropriate tests using all.equal(). However, before I resubmit the package to CRAN, I would really like to make sure that the updated
2024 Oct 11
1
Error message when calling t.test() and aov() with a factor variables
> -----Original Message-----
> From: Kurt Hornik <Kurt.Hornik at wu.ac.at>
> Sent: Friday, October 11, 2024 14:18
> To: Viechtbauer, Wolfgang (NP) <wolfgang.viechtbauer at maastrichtuniversity.nl>
> Cc: r-devel <r-devel at r-project.org>
> Subject: Re: [Rd] Error message when calling t.test() and aov() with a factor
> variables
>
> >>>>>
2013 Dec 12
1
refline in forest() {metafor}
Hello all,
I am using forest.rma to plot a random effects model meta-analysis. I noticed
that refline sets a vertical line indicating the null hypothesis.
Is there a way to draw another vertical line, possibly dashed, centered on the
summary estimate?
Prof. Viechtbauer, if you happen to read this, I'd like to thank you for making
an excellent package. I have been using the metafor package
2020 May 12
4
S3 method dispatch for methods in local environments
Dear All,
In R 3.6.3 (and earlier), method dispatch used to work for methods stored in local environments that are attached to the search path. For example:
myfun <- function(y) {
out <- list(y=y)
class(out) <- "myclass"
return(out)
}
print.myclass <- function(x, ...) print(formatC(x$y, format="f", digits=5))
myfun(1:4)
# prints: [1]
2017 Oct 09
2
Discourage the weights= option of lm with summarized data
Yes. Thank you; I should have quoted it.
I suggest to remove this text or to add the word "not" at the beginning.
Arie
On Sun, Oct 8, 2017 at 4:38 PM, Viechtbauer Wolfgang (SP)
<wolfgang.viechtbauer at maastrichtuniversity.nl> wrote:
> Ah, I think you are referring to this part from ?lm:
>
> "(including the case that there are w_i observations equal to y_i and
2024 Oct 11
1
Error message when calling t.test() and aov() with a factor variables
>>>>> Viechtbauer, Wolfgang (NP) writes:
> Hi all,
> Just noticed that the error that arises when calling t.test() with factors could be a bit clearer:
>> t.test(factor(c(3,1,2,4,3,5,4,5)), factor(c(2,1,2,3,4,5)))
> Error in var(x) : Calling var(x) on a factor x is defunct.
> Use something like 'all(duplicated(x)[-1L])' to test for a constant vector.