Displaying 20 results from an estimated 1000 matches similar to: "parent in Creating environment object"
2007 Dec 11
1
Mono in postscript device
Hi,
Plotting a graphic into a postscript device using family="mono" returns the
following error message:
>> family 'mono' not included in PostScript device
Looking at postscriptFonts() however lists the "Courier" font as availeable
mono font. So where is the problem?
Thanks guys for your help.
Best regards
Benjamin
sessionInfo()
R version 2.5.0
2008 Aug 15
6
Saving environment object
Hi,
When I create an environment object with new.env() and populate it with
values then how can I save it into an .RData file properly, so it can be
loaded later on in a new session?
Saving an environment object with save() or save.image() results in an error
message when loading again:
Error: protect(): protection stack overflow
Regards,
benjamin
======================================
2012 Sep 19
0
Discrepancies in weighted nonlinear least squares
Dear all,
I encounter some discrepancies when comparing the deviance of a weighted and
unweigthed model with the AIC values.
A general example (from 'nls'):
DNase1 <- subset(DNase, Run == 1)
fm1DNase1 <- nls(density ~ SSlogis(log(conc), Asym, xmid, scal), DNase1)
This is the unweighted fit, in the code of 'nls' one can see that 'nls'
generates a vector
2013 Feb 12
0
Deviance and AIC in weighted NLS
Dear All,
I encounter some discrepancies when comparing the deviance of a weighted and
unweigthed model with the AIC values. A general example (from 'nls'):
DNase1 <- subset(DNase, Run == 1)
fm1DNase1 <- nls(density ~ SSlogis(log(conc), Asym, xmid, scal), DNase1)
Now for a weighted fit:
fm2DNase1 <- nls(density ~ SSlogis(log(conc), Asym, xmid, scal),
2009 Apr 27
1
Passing Bablok
Hi,
is there any R-package providing a Passing Bablok regression procedure?
This Question seems to have occurred once or twice before, but I never saw
an answer to the previous inquiries.
Best regards
Benjamin Otto
======================================
Benjamin Otto
University Hospital Hamburg-Eppendorf
Institute For Clinical Chemistry
Martinistr. 52
D-20246 Hamburg
2009 Jul 23
1
Network from package functions
Dear R-helpers,
does anyone know of some package/function that can build a network from
the functions that are implemented in a package,
i.e. visualize the cross-references from one function to another in the
same or some dependent package?
An example would be a function like 'nls' on top of the hierarchy and
then a network of nodes from the functions that are called within 'nls'
2008 Mar 25
1
Error propagation
Dear R-helpers,
I´m in the context of writing a general function for error propagation
in R.
There are somehow a few questions I would like to ask (discuss), as my
statistical knowledge is somewhat restricted.
Below is the function I wrote, the questions are marked.
Many thanks in advance.
propagate <- function(expr, varList, type = c("stat", "raw"), cov =
TRUE)
{
2009 Feb 10
1
Fast fourier transformation
Hi,
here is a practical problem we would like to solve. In a pneumatic post the
acceleration of the capsule is measured and plotted over time. From the
graph achieved we would like to derive some kind of statistic value that
describes the stress the capsule, or what is in it, is exhibited to.
The amount of stress introduced to the capsule will probably depend on two
things, the maximum
2013 Feb 06
0
weighing proportion of rowSums in dataframe
Hi Eik,
thank you so much - it works perfectly!
Thank you and best wishes
Alain
Eik Vettorazzi <E.Vettorazzi@uke.de> hat am 6. Februar 2013 um 17:01 geschrieben:
> Hi Alain,
> here is a one-liner for a df without the rowSum column
>
>
2017 Dec 20
0
outlining (highlighting) pixels in ggplot2
Hi Eric,
you can use an annotate-layer, eg
ind<-which(sig>0,arr.ind = T)
ggplot(m1.melted, aes(x = Month, y = Site, fill = Concentration), autoscale
= FALSE, zmin = -1 * zmax1, zmax = zmax1) +
geom_tile() +
coord_equal() +
scale_fill_gradient2(low = "darkred",
mid = "white",
high = "darkblue",
2018 Apr 18
1
Problem with regression line
Hi Anne,
I would suggest to change the linear model to lm(BloodPressure~Age), as
this model makes more sense in biological means (you would assume that
age influences pressure, not vice versa) and also obeys the statistical
assumption of weak exogeneity, that age can be measured without error,
at least compared to error-prone bp measures.
Cheers
Am 18.04.2018 um 16:07 schrieb Gerrit Eichner:
2024 Feb 28
1
[EXT] Initializing vector and matrices
Hi Steven,
It's not entirely clear what you actually want to achieve in the end.
As soon as you "know" x1, and assuming that the different "xi" do not
differ in length in the real application, you know the length of the
target vector.
Instead of the loop, you can use 'Reduce' without having to initialize a
starting vector.
# generate sample vectors, put them in
2017 Dec 04
0
YNT: ggtern and bquote...
reading ?plotmath you might notice that "_" isn't the propper syntax for
subscripts. This will work:
ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend =
c(.30,.50,.0),zend =c(.0,.50,0.3)))+
geom_point()+
theme_showarrows()+geom_segment(size=.5)+
geom_text_viewport(x=c(.45,.27,.37),y=c(.32,.29,.22),label=c("P[a]","P[b]","P[c]"),
parse=TRUE)
2017 Dec 04
1
ggtern and bquote...
D'oh! Thanks for pointing this out. I blame caffeine depletion at the time...
-pd
> On 4 Dec 2017, at 15:48 , Eik Vettorazzi <E.Vettorazzi at uke.de> wrote:
>
> reading ?plotmath you might notice that "_" isn't the propper syntax for
> subscripts. This will work:
>
> ggtern(data=x11,aes(A,B,C,xend = c(0.7,.00,0.7),yend =
> c(.30,.50,.0),zend
2009 Aug 12
2
Superscripts in axis label
Hi All,
I am trying to lable the y-axis on my scatterplot with the following:
"Soil moisture content (m3m-3)"
I am using the following coding for plotting the graph:
plot(soilmoisture~gradientlevel, xlab="Levels of droughting gradient", ylab="Soil moisture content (m3m-3)", bty="l", font.main="2", pch=16, las=1, cex.lab="1.13")
I have
2008 Sep 29
2
density estimate
Hi,
I have a vector or random variables and I'm estimating the density using
"bkde" function in the KernSmooth package. The out put contains two vectors
(x and y), and the R documentation calls y as the density estimates, but my
y-values are not exact density etstimates (since these are numbers larger
than 1)! what is y here? Is it possible to get the true estimated density at
each
2007 Nov 15
2
font formating
I am tryindo to do a very simple thing but cannont find how to do it
anywhere. I need to formap part of my title as subscript ans superscript.
How can I do it?
Thanks a lot in advance
José
--
MSc José Alberto F. Monteiro
Botanisches Institut
Universität Basel
[[alternative HTML version deleted]]
2009 Feb 19
2
read.table : how to condition on error while opening file?
Hi,
I'm using read.table in a loop, to read in multiple files. The problem
is that when a file is missing there is an error message and the loop is
broken; what I'd like to do is to test for the error and simply do
"next" instead of breaking the loop. Anybody knows how to do that?
Example:
filelist <- c("file1.txt", "file2.txt",
2008 Sep 23
3
odds ratio: how to create reference
HI there,
i know this is a basic question, though i need some help because this
is somewhat away from my current issue, but nevertheless interesting
to me... Lets assume i have some estimated probabilities, say
estimated by a logit model. i know i can also state them as an odds
ratio.
Now i?d like to state these odds ratios as a reference to a specific
outcome of my investigated
2009 Apr 07
4
group by-like statement for 2-row matrix
Hi,
my problem is as follows:
I have a matrix of two rows like this:
2 2 3 4 4 4 5 5 6
1 1 2 1 3 3 2 1 1
Can I apply something like "group by" in sql? What I want to achieve
is the some of second row for each unique entry of first row:
2 -> 2 (=1+1)
3 -> 2
4 -> 7 (=1+3+3)
5 -> 3 (=2+1)
6 -> 1
Thanks!!
Henning