On Sun, 13 Nov 2005 [EMAIL PROTECTED] wrote:
[...]
> There is one aspect though where R users are in the cold when
> it comes to C and FORTAN. If you want to understand the function
> 'eigen', say, then you can "?eigen" to learn about its usage.
> You can enter "eigen" to see the R code, and inde
Thanks for all the nice discussions.
Though different users have various needs from R, It's always good to stand
on the shoulders of giants (as roger said). How far we will see depends our
ability to understand what have been done by other languages.
The package written in pure R might be g
On Sun, 13 Nov 2005, Wolfgang Keller wrote:
> So here are the questions:
>
> How suitable is R for this kind of work (reliability analysis)?
>
> Does it handle (right-/left-/interval-)censored samples by default?
>
The survreg() function in the "survival" package fits accelerated failure
models
Over the weekend I wrote a small package to evaluate poker hands and to
do some small simulations with them. If anyone is interested in looking
at it, I'd appreciate comments and/or contributions.
The package is available at
http://www.stats.uwo.ca/faculty/murdoch/software. (Look at the botto
On 13-Nov-05 Roger Bivand wrote:
> On Sun, 13 Nov 2005, Robert wrote:
>
>> If I do not know C or FORTRAN, how can I fully understand the package
>> or possibly improve it?
>
> By learning enough to see whether that makes a difference for your
> purposes. Life is hard, but that's what makes life
On Sun, 13 Nov 2005, Roger Bivand wrote:
> On Sun, 13 Nov 2005, Robert wrote:
>
>> If I do not know C or FORTRAN, how can I fully understand the package
>> or possibly improve it?
>
> By learning enough to see whether that makes a difference for your
> purposes. Life is hard, but that's what mak
>
> On Nov 13, 2005, at 3:24 PM, Robert wrote:
>
>
>> I am curious about one thing: since the reason for using r is r is
>> a easy-to-learn language and it is good for getting more people
>> involved. Why most of the packages written in r use other
>> languages such as FORTRAN's code? I under
you might consider nlrq() in the quantreg package, which does median
regression for nonlinear response functions
url:www.econ.uiuc.edu/~rogerRoger Koenker
email [EMAIL PROTECTED] Department of Economics
vox:217-333-4558
On Sun, 13 Nov 2005, Robert wrote:
> If I do not know C or FORTRAN, how can I fully understand the package or
> possibly improve it?
By learning enough to see whether that makes a difference for your
purposes. Life is hard, but that's what makes life interesting ...
> Robert.
>
> Roger Bivand
Hi,
I'm trying to use Robust non-linear regression to fit dose response curves.
Maybe I didnt look good enough, but I dind't find robust methods for NON
linear regression implemented in R. A method that looked good to me but is
unfortunately not (yet) implemented in R is described in
http://www.
If I do not know C or FORTRAN, how can I fully understand the package or
possibly improve it?
Robert.
Roger Bivand <[EMAIL PROTECTED]> wrote:
On Sun, 13 Nov 2005, Robert wrote:
> Roger Bivand wrote:
> On Sun, 13 Nov 2005, Robert wrote:
>
> > It uses FORTRAN code and not in pure R.
>
> The sam
On Sun, 13 Nov 2005, Robert wrote:
> Roger Bivand <[EMAIL PROTECTED]> wrote:
> On Sun, 13 Nov 2005, Robert wrote:
>
> > It uses FORTRAN code and not in pure R.
>
> The same applies to deldir - it also includes Fortran. So the answer seems
> to be no, there is no voronoi function only written i
On Sun, 13 Nov 2005, Robert wrote:
>
>
> Peter Dalgaard <[EMAIL PROTECTED]> wrote:
> Robert writes:
>
> > Professor,
> > What does if ((x=2)) 2 mean?
> > Thanks,
> > Robert
>
> it assigns 2 to x, then uses the result (i.e. whether it is non-zero)
> as the condition for the if() construct. So i
Roger Bivand <[EMAIL PROTECTED]> wrote:
On Sun, 13 Nov 2005, Robert wrote:
> It uses FORTRAN code and not in pure R.
The same applies to deldir - it also includes Fortran. So the answer seems
to be no, there is no voronoi function only written in R.
I am curious about one thing: since the rea
I have some time stamped events that are supposed to be unrelated.
I have plotted them and that assumption does not appear to be valid.
http://metrak.com/tmp/sevents.png is a plot showing three sets of events
over time. For the purpose of this exercise, the Y value is irrelevant.
The series
Peter Dalgaard <[EMAIL PROTECTED]> wrote:
Robert writes:
> Professor,
> What does if ((x=2)) 2 mean?
> Thanks,
> Robert
it assigns 2 to x, then uses the result (i.e. whether it is non-zero)
as the condition for the if() construct. So in this case, the
condition is always TRUE and the result is
Robert <[EMAIL PROTECTED]> writes:
> Professor,
> What does if ((x=2)) 2 mean?
> Thanks,
> Robert
it assigns 2 to x, then uses the result (i.e. whether it is non-zero)
as the condition for the if() construct. So in this case, the
condition is always TRUE and the result is always 2.
> Peter Dalg
On Sun, 13 Nov 2005, Robert wrote:
> It uses FORTRAN code and not in pure R.
The same applies to deldir - it also includes Fortran. So the answer seems
to be no, there is no voronoi function only written in R.
>
> Renaud Lancelot <[EMAIL PROTECTED]> wrote:See package tripack. You can find
> t
Hi
Zepu Zhang wrote:
> I'm trying to do animation with grid. Basically it's a vector field, like
> what 'quiver'
> in Matlab creates. I need to update it with grid.edit(). It seems grid erases
> the
> whole thing first, then redraws. Therefore the evident 'flash' between frames.
Correct.
It uses FORTRAN code and not in pure R.
Renaud Lancelot <[EMAIL PROTECTED]> wrote:See package tripack. You can find
this information with
RSiteSearch("voronoi", restrict = "functions")
Best,
Renaud
2005/11/13, Robert :
> Is there any pure r code to do delaunay or voronoi diagrams?
> Thanks!
>
Professor,
What does if ((x=2)) 2 mean?
Thanks,
Robert
Peter Dalgaard <[EMAIL PROTECTED]> wrote:
Prof Brian Ripley writes:
> Please do read the posting guide.
> The answer to your question can be found by help("<-") or help("=").
>
> The '<-' can be used anywhere, but the '=' is
> only allowed a
Hello,
first: I am a newbie to this list, so if this isn't the right place to
ask, thanks for pointing me to the right direction...
I'm currently working on adding a degree in RAMS engineering to my
general engineering education, and consequently I'm looking for
software to get my fu
I do not quite follow your post but here are some suggestions.
1) You can the na.strings argument to simplify things
df <- read.delim(file="lala.txt", na.strings="-" )
2) If you can count the number of metastasis per row first, then find
the rows with zero sum.
met.cols <- c(11,1
Hi i'm a french medical student,
i have some data that i import from excel. My colomn of the datafram
are the localisations of metastasis. If there is a metatsasis there is
the symbol "_". i want to exclude the row without metastasis wich
represent the NA data.
so, i wrote this
mela is the dat
I'm trying to do animation with grid. Basically it's a vector field, like what
'quiver'
in Matlab creates. I need to update it with grid.edit(). It seems grid erases
the
whole thing first, then redraws. Therefore the evident 'flash' between frames.
Any way to avoid this flash? Thanks.
___
Hello.
I have this problem. It is modeling high-frequency financial data.
The gamma OU process X (t), BDLP compound Poisson with intensity h > 0
and
E(a) exponential (a) distribution of jump. Lévy density w of Z (1):
w(x) = ahexp(-
Je serai absent(e) du 12/11/2005 au 16/11/2005.
Je répondrai à votre message dès mon retour.
I will be out of the office from 14-MAR-2005 until 18-MAR-2005
I will reply to your message on my return.
Julien Ruiz
L'acces immediat aux meilleurs tarifs Air France et au billet
Prof Brian Ripley <[EMAIL PROTECTED]> writes:
> Please do read the posting guide.
> The answer to your question can be found by help("<-") or help("=").
>
> The '<-' can be used anywhere, but the '=' is
> only allowed at the top level (that is, in the complete expression
> typed
Claus Atzenbeck <[EMAIL PROTECTED]> writes:
> On Sun, 13 Nov 2005, Peter Dalgaard wrote:
>
> > jim holtman <[EMAIL PROTECTED]> writes:
> [...]
> > > > index <- match(colnames(table2), colnames(table1), nomatch=0)
> > > > t(t(table1[,index]) / table2[index != 0, drop=FALSE])
> [...]
> > or even
>
gsmatos1 wrote:
> Hi,
>
> I´m trying to use the Win2BUGS package from R and I have a similar problem
> that reurns with the message:
>
> Error in FUN(X[[1]], ...) : symbol print-name too long
I took a first look. The above looks like a bug in package "rbugs" which
does some really strange
Yue Li wrote:
> Hi, dear all,
> I want to show numerical values with decimal points on the boxplots. Here
> is what I did:
> For example;
> x1<-rnorm(100,2,2); x2<-rexp(100); label<-rep(1:2, rep(100,2))
> median<-round(c(median(x1), median(x2)),3)
> boxplot(c(x1, x2)~label, medpch=paste(median),
Hi, dear all,
I want to show numerical values with decimal points on the boxplots. Here
is what I did:
For example;
x1<-rnorm(100,2,2); x2<-rexp(100); label<-rep(1:2, rep(100,2))
median<-round(c(median(x1), median(x2)),3)
boxplot(c(x1, x2)~label, medpch=paste(median), medcex=1.2)
It only shows
And you want to have different colored lines but black texts, try
legend(x = 5, y = 0.2, legend = c("Data Set", "Fitted PDF"),
col = c("black", "red"), lty=1)
The advantage of this is that you can use dotted (lty option) or lines
with different weights (lwd option).
Regards, Adai
On
Mark Miller wrote:
> I use the following to plot two graphs over each other and then insert a
> legend, but the two items in the legend both come up the same colour
>
> x = seq(0,30,0.01)
> plot(ecdf(complete), do.point=FALSE, main = 'Cummlative Plot of Monday IATs
> for Data and\n Fitted PDF
I use the following to plot two graphs over each other and then insert a
legend, but the two items in the legend both come up the same colour
x = seq(0,30,0.01)
plot(ecdf(complete), do.point=FALSE, main = 'Cummlative Plot of Monday IATs
for Data and\n Fitted PDF over Entire 15 Weeks')
lines(x, p
On 13 Nov 2005, at 10:17, Renaud Lancelot wrote:
> See package tripack. You can find this information with
>
> RSiteSearch("voronoi", restrict = "functions")
>
So the answer is "no". The question was about "pure r code" (with this
capitalization), and voronoi.mosaic() in 'tripack' uses .Fortran
On Sun, 13 Nov 2005, Peter Dalgaard wrote:
> jim holtman <[EMAIL PROTECTED]> writes:
[...]
> > > index <- match(colnames(table2), colnames(table1), nomatch=0)
> > > t(t(table1[,index]) / table2[index != 0, drop=FALSE])
[...]
> or even
>
> > sweep(table1, 2, table2[colnames(table1)], "/")
Perfect.
See package tripack. You can find this information with
RSiteSearch("voronoi", restrict = "functions")
Best,
Renaud
2005/11/13, Robert <[EMAIL PROTECTED]>:
> Is there any pure r code to do delaunay or voronoi diagrams?
> Thanks!
>
> -
>
> [[alternative HT
Please do read the posting guide.
The answer to your question can be found by help("<-") or help("=").
The '<-' can be used anywhere, but the '=' is
only allowed at the top level (that is, in the complete expression
typed by the user) or as one of the subexpressions in a braced
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