Displaying 20 results from an estimated 1000 matches similar to: "Equivalent for Matematica function Which..."
2008 Feb 07
3
Empty data frame
Hi
Sorry for banal question
How to create empty data frame with for example 30 variables without
typying: data.frame(x=1,y=1....)
Jarek
2008 Jan 23
3
formula for nls
Hi!
How to write in model's formula of type:
nls(y~k/(x^n), data=data, start=list(k=1,n=1))
i.e the problem is on x^n, I(x^n) generate error
thanks
Jarek
2008 Jul 23
1
Sample on dataframe
Hi
I'm looking for solution or function which I can use to sample data
frame, to obtain new (smaller) data frame similar to sample() function
Jarek Jasiewicz
2008 Jan 12
2
glm expand model to more values
Hi
I have the problem with fitting curve to data with lm and glm. When I
use polynominal dependiency, fitted values from model are OK, but I
cannot recive proper values when I use coefficents to caltulate this.
Let me present simple example:
I have simple data.frame: (dd)
a: 1 2 3 4 5 6
b: 3 5 6 7 9 10
I try to fit it to model:
model=glm(b~poly(a,3),data=dd)
I have following data
2008 Feb 04
1
how to get points from SpatialPolygonsDataFrame
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2008 Oct 09
1
number format in plots
Hi
It is probably simple but how to force in plot command number format:
20000, 30000, 40000 etc. instead of 2e+04, 3e+04 etc.
example of command:
plot(x=data$along, y=data$rzedna,type="l", xlim=c(0,max(data$along)),
ylim=c(200,1200), main="", xlab="length", ylab="height", cex.main=2,
cex.lab=1.5, cex.axis=1.2, lwd=2)
thanks
Jarek
2009 Apr 26
1
Problem installing packages
since 2.9.0 version I have a problem with installing packages:
install.packages("sp")
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
Warning: unable to access index for repository
http://piotrkosoft.net/pub/mirrors/CRAN/src/contrib
Warning messages:
1: In open.connection(con, "r") : unable to resolve ''
2: In
2008 Jan 02
1
problems with JAVA in JGR library on ubuntu 7.04
Hi All
I installed JGR library both on ubuntu 7.10 and 7.04
on 7.10 all went fine,
but on 7.04 I recived massage:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/rosuda/JRI/RMainLoopCallbacks
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at
2009 Apr 27
3
Formatting numbers
I've been trough the R documentation for about half an hour and it's not
clear to me how to do this:
I need to format to character a series of integers from 1 to 1000, and I
like them to look like
"0001" "0002", "0059", "0123" and so on. Padded with zeroes to have four
digits.
Cheers!
Mario.
r-help-request at r-project.org wrote:
> Send
2015 Nov 03
1
Fwd: Rcpp sugar dpois
Hi. Here is a piece of cpp code.
It works, but I do not understand the rational for the use of
"R::dpois" to call the function dpois since in the examples I have always
found directly "dpois" or "Rcpp::dpois" that both do not work in my code.
Could anyone be so patient to explain me why should it be like that?
Thaks a lot, Enrico
#include <Rcpp.h>
using
2018 Dec 18
3
Samba and dnsmasq
Hello everyone !
Well, I'm setting up a 'new' box with samba 4.9.3 on Ubuntu 18.04
Idea is to use Host OS for Domain Controler (dc1.smb.domain.tld) and a
LXC container (ubuntu 18.04 too) as Domain Member with File Server
(fs.smb.domain.tld).
Administration through Windows OS will be done with a Qemu KVM.
Bad thing is that I get :
> Failed to bind to 0.0.0.0:53 TCP -
2004 Dec 03
1
information
I would like to know if there exist any package on the profyle analysis, or
on repeated measures, (AUC)...
Thank for answering me,
Anna Maria Paganoni
Dipartimento di Matematica
Politecnico di Milano
piazza Leonardo da Vinci, 32
20133 Milano, Italy
tel +39-0223994574 fax +39-0223994568
e-mail annap at mate.polimi.it
2012 Mar 24
1
Append to file in loop
My files are on disk and they are regular text files named
file_1 file_2 file_3 file_4 and file_5 with extension .saam
The separator is sep='' (ie, white space)
I want to append 'XFile' at the end of those files. XFile is also on disk.
file.append("file_1.saam", "XFile.saam"); file.append("file_2.saam",
"XFile.saam")...
works but it
2013 Jun 09
3
Preparación de datos
Hola, ¿como están?
Me encuentro haciendo un trabajo de Explotación de Información para
la facultad y tengo un inconveniente a la hora de preparar los datos para
poder operar con ellos.
Tengo un atributo "Titulo Secundario" que cuenta con 139 valores
diferentes (al final les dejo algunos de estos valores con la cantidad de
ocurrencias de cada uno) y lo que quiero hacer es
2011 Apr 01
1
Adding a "description" meta-tag to the R homepage
Hello all,
I hope I'm writing to the correct place.
I believe that the R homepage will benefit from including the "description"
meta tag in it's homepage.
The reason is that google uses that tag to decide what to show when the R
homepage shows up on a search result.
The current description of the first result of searching "R" in google is:
"*R*, also called GNU
2012 Mar 28
2
Data extraction
Dear ReXperts,
I have the below text file output. I need to extract the T, QC, QO, QO-QC
and WT columns for
the data between T = 10 and T=150.
Any ideas?
Thanks in advance.
========================================================================================
1 D C ---CAT-- T THETA QC QO
QO-QC QC/QO WT FSD
8 1 0 1.0000E+01
2002 Mar 06
2
Announce: R from Python
Hello.
I'm not a regular subscriber in this mailing list, but I think that this
announce may interest somebody. Please, forgive me if this is the wrong place.
Based on the code of RSPython, but modifying it a little, I wrote an interface
for using R from Python. The main reason for writing it was to make it robust,
in order to avoid segmentation faults. Also, it is (IMMO) a very
2013 Feb 04
1
Subfolders problem
I have moved from dovecot 1.x to 2.x and I have big problem with
subfolders.
When I'm moving subfolder with other subfolders is moving only main
subfolder, without subfolders, example :
mail-storage-1 /var/vmail/home/adamskitest/mdbox/mailboxes # find | egrep
-e "janusz|jarek"
./jarek
./jarek/dbox-Mails
./jarek/dbox-Mails/dovecot.index.log
./jarek/jarek2
./jarek/jarek2/dbox-Mails
2002 Nov 06
4
offline rsync
hello, I'm new to this list.
here is my question:
I would like to synchronize two computers (say the home one and the job
one) using zip drives or similar (cdroms, etc), since modem lines are
quite slow and expensive (in Italy).
I though I could produce the "signature" of files on home computer, store
it on a zip, go to job, run rsync to copy the missing or
altered files on
2005 Oct 04
6
Animation of Mandelbrot Set
Hi,
I was playing with Mandelbrot sets and come up with the following code, I
thought I would share:
library(fields) # for tim.colors
library(caTools) # for write.gif
m = 400 # grid size
C = complex( real=rep(seq(-1.8,0.6, length.out=m), each=m ),
imag=rep(seq(-1.2,1.2, length.out=m), m ) )
C = matrix(C,m,m)
Z = 0
X = array(0, c(m,m,20))
for (k in 1:20) {
Z =