Displaying 20 results from an estimated 5000 matches similar to: "Compiling R scripts"
2005 Jul 15
2
rmpi in windows
Hi Folks,
Has anyone been able to get rmpi to work under windows ?
Thanks,
Tolga
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2005 Dec 20
4
help with sapply, plot, lines
Hi,
I am trying to plot multiple lines on a graph.
The function is particularly simple:
sigma<-function(lambda) atm-2*rr*(lambda-0.5)+16*str*(lambda-0.5)^2
which uses the variables atm, rr and str...
I define these as such:
atm<-0.4
rr<-0.2
str<-0.1
and this plots fine:
plot(seq(0.01,0.99,0.01),sigma(seq(0.01,0.99,0.01)),ylim=c(0,1))
Now, I want to plot the same function for
2005 Sep 06
2
help.search problem
Dear Fellow R Users,
I have recently come across a weird problem with help.search:
> help.search("tps")
Error in rbind(...) : number of columns of matrices must match (see arg 8)
>
This happens no matter what I search for...
Any thoughts ?
Thanks,
Tolga
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2005 Jun 20
6
Bucketting data
Hi,
Am sure this is a trivial question but for some reason, haven't been able to figure it out.
I want to bucket data in a vector, and then iterate over the buckets.
Say the data set is:
> cleandata[,4]
[1] 26 26 26 26 26 26 26 26 26 26 26 26 61 61 61 61 61 61 61 61 61 61 61 89 89 89 89 89 89 89 180 180 180 180 362 544 544 544
[39] 544 544 544 544 544 544
2005 Apr 11
2
Trying to undo an assignment
Hi,
I defined corr to be a function, not realising that this was also the name for
correlation in package=boot.
How do I explicitly call the corr function within package boot (so, scope up
over the current frame, I guess is another way of saying it) without removing
my new corr function ?
Thanks,
Tolga
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2005 Apr 08
1
Can't get function to run iteratively
Trying to do something very simple...
> numerical.grad
function(func,x, eps=1e-12) {
# very simple (crude) numerical approximation
f <-func(x)
df <-1:length(x)
for (i in 1:length(x)) {
dx <- x
dx[i] <- dx[i] +eps
df[i] <- (func(dx)-f)/eps
}
df
}
> test<-function(x){x^2}
> y<-seq(0.1,0.5,0.1)
> numerical.grad(test,y)
[1] 0.1999997 0.0000000
2006 Nov 05
2
Generating a double-exponential jump diffusion process
Dear R Users,
Does anyone know of a package which can generate random realisations of
a double-exponential jump diffusion process with a drift ? Something
where I can specify the likelihoods of an up or a down jump, the drift
rate, and the mean size, and get back a vector of realisation of the
process (for purposes of a Monte-Carlo).
Kind regards,
Tolga
2005 May 05
2
Numerical Derivative / Numerical Differentiation of unkno wn funct ion
Ah... I searched for half an hour for this function... you know, the help function in R could really be a lot better...
But wait a minute... looking at this, it appears you have to pass in an expression. What if it is an unknown function, where you only have a handle to the function, but you cannot see it's implementation ? Will this work then ?
-----Original Message-----
From: Berton Gunter
2012 Dec 06
5
2-15.2 Windows 32-bit version anywhere ?
Dear R Users,
I am working in an environment in which I am not able to compile any code. Sad, but true.
Is there a Windows 32-bit version of 2-15.2 anywhere ? I am currently unable to use packages Matrix and mgcv because they appear to have been compiled for 2-15.2 but only 2-15.1 is available for download from the regular CRAN websites.
Thanks in advance,
Tolga
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2005 Apr 14
6
Inverse of the Laplace Transform/Gaver Stehfest algorithm
Hi there,
Is there an implementation of the Gaveh Stehfest algorithm in R
somewhere ? Or some other inversion ?
Thanks,
Tolga
2006 Apr 24
3
Sending an ESC command to the console from wihtin a script
Hi,
Is there a way to send an ESC command to the console from within a
script window, without using the mouse ?
Thanks,
Tolga
2008 Nov 04
4
fine grain tick marks for zoo plots
Dear R Users,
I am trying to get plot.zoo to place monthy tickmarks/labels for a time
series which spans daily data going back a bit over a year. Right now, I
am getting only one tick mark on the x-axis for the beginning of 2008. How
can I force plot.zoo to place more regular x-axis tick marks on a monthly
basis ?
Thanks in advance,
Tolga
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2008 Jul 08
6
Automatic placement of Legends
Dear R-Users,
I am looking for a way to get legends placed automagically in an empty
spot on a graph. Additional complication comes through my useage of
multiple graphs on the same plot through mfrow.
Is there a way to achieve this in R ? I have legends for each of the
sub-plots.
Many thanks in advance,
Tolga
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2008 Sep 09
2
Information on the number of CPU's
Dear R Users,
I am on Windows XP SP2 platform, using R version 2.7.2 . I was wondering
if there is a way to find out, within R, the number of CPU's on my machine
? I would use this information to set the number of nodes in a cluster,
depending on the machine. Sys.info() and .Platform do not carry this
information.
Thanks in advance,
Tolga Uzuner
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2012 Jan 12
1
How can I prevent solve.QP from printing the solution progress ?
Dear R Users,
How can I prevent solve.Qp from printing the solution progress ?
Thanks in advance,
Tolga
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2008 Jul 19
2
Title for graph with multiple plots
Dear R Users,
I am attempting to place a title to a graph with multiple plots that
should go across the top of all the graphs, and not just one of them. I
am using mfrow in par to plot. Can anyone suggest if and how this could
be done ?
Thanks in advance,
Tolga
2008 Jun 30
6
Plotting three time series on the same graph
Dear R Users,
I would like to plot three time series on the same graph, two axis on the
left and one axis on the right.
The time series that I am graphing on the left do not share a similar
scale: one has a range of 1:100 and the other a range of 25000:70000. How
can I display the tick marks for both on the left hand side without
superimposing them, i.e. one set of tick marks in black right
2006 Mar 12
2
Numerical Derivatives in R
Hi,
Suppose I have an arbitrary function:
arbfun<-function(x) {...}
Is there a robust implementation of a numerical derivative routine in R
which I can use to take it's derivative ? Something a bit more than
simple division by delta of the difference of evaluating the function at
x and x+delta...
Perhaps there is a way to do this using D or deriv but I could not
figure it out.
2008 Jun 19
4
How can I execute a .R/script file
Dear R-Users,
I've written a number of functions in a .R/script file. I would like to
call those functions from another script file. How can I execute all the
code in a script file so that the functions are available for use in my
other script file ?
I have tried help.search("script") and various Google alternatives but
couldn't come up with anything.
Thanks in advance,
2008 Jul 07
2
Sorting a list
Dear R Users,
A bit of a simple question, but I could not find the answer thru google
("sorting lists r cran","how can i sort a list r cran") or RSiteSearch...
how can I sort a list ?
One imagines something like sort.list would do the job, but that's not the
one.
> foo<-list(a=10,b=2,c=3)
> sort.list(foo)
Error in sort.list(foo) : 'x' must be atomic