Displaying 20 results from an estimated 1000 matches similar to: "importing images"
2007 Jul 23
2
persp and greek symbols in the axes labels
Hello,
I am plotting a 3D function using persp and I would like to use greek
symbols in the axes labels.
I have found examples like this one on the web:
plot(0,0,xlab=expression(kappa[lambda]),ylab=substitute(paste(phi,"=",true,sigma),list(true=5)))
this works well with plot but not with persp:
with the command
persp(M,theta = -20,phi =
2005 Mar 08
4
Non-linear minimization
hello, I have got some trouble with R functions nlm(),
nls() or optim() : I would like to fit 3 parameters
which must stay in a precise interval. For exemple
with nlm() :
fn<-function(p) sum((dN-estdata(p[1],p[2],p[3]))^2)
out<-nlm(fn, p=c(4, 17, 5),
hessian=TRUE,print.level=2)
with estdata() a function which returns value to fit
with dN (observed data vactor)
My problem is that only
2007 Jun 05
1
multiple plot in odfWeave
Hello R users,
I found the odfWeave package to create an odf document. It seems to be a
very nice tool.
So i tried to used it to create a report with multiple plot:
I create an odt file with some code inside:
I connect to a mysql database
I get a list of projects
foreach project I would like to make a plot (a map exactly)
then in a R console I use the odfweave (inFile, outFile) function.
2002 May 28
2
peaks
I am looking for a function in R that is equivalent to the function
"peaks" in
Splus. This function gives the local maxima of a vector.
I do not find it using the help and I 'm not sure it exits in R.
Could someone help me ?
Thanks,
Herve Cardot
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read
2012 Feb 15
1
Is there a maximum limit for the domU memory ?
Hello everybody
The current limit (we''re working with Xen 4.0.1 on a debian squeeze
server) for the domU memory is 256 Gb
Is it possible to do something to get domUs with more than that ?
Do we have to upgrade Xen hypervisor for that purpose or is a kernel
recompilation sufficient ?
We would like to have a vm with 768 Gb memory...
Thanks for your kind answers !
--
Emmanuel
2007 Jun 05
1
odfTable
Hello,
I am using the odfWeave packages;
I draw a table using the function odfTable:
partCols <- gsub(?\\.?, ? ?, names(partenaires))
odfTable(partenaires, useRowNames = FALSE, colnames=partCols)
it's working as I have a table in my output file.
I would like to know how to change the background color for the header
cells.
I assuming i have to use tableStyles, but I don't understand
2002 Oct 24
3
Function scale (PR#2209)
I found a problem with scale function,
while using center=FALSE and scale=TRUE:
all column are not divided by standard error,
but divided by sqrt (1/(n-1) sum Xi^2 )
Example:
> l<- c(1,2,3)
> scale(l,F,T)
[,1]
[1,] 0.3779645
[2,] 0.7559289
[3,] 1.1338934
attr(,"scaled:scale")
[1] 2.645751
2.645751 = sqrt( 1/2 * (1+4+9) )
Antoine Lucas & Aymeric Labourdette
2003 Jul 22
2
read.table with option dec=',' (PR#3532)
Full_Name: Antoine Lucas
Version: 1.7.0 (2003-04-16)
OS: Linux
Submission from: (NULL) (193.51.197.253)
I have a problem using read.table:
If in a dataframe, we have a string containing a dot, write.table
will not write any file while using option "dec=','".
Example
> m <- "1.5"
> write.table(m,dec=',')
Error in if (n%%nrowv == 0) value <-
2000 Apr 15
2
unresolved symbols in dynamically linked code
I'm probably misunderstanding something in "Writing R Extensions" version
1.0.0. In the chapter on the R API, section 4.7, it is stated that the
functions listed in R_ext/Linpack.h are available to users' Fortran code.
I am developing a developing a library of ode solvers, based on lsoda and
ddassl, and which in turn call some routines from linpack and double
precision blas. I
2009 Jul 15
3
Axes origins and labeling
I have re-labeled tick marks on the x axis. The problem is that by using
axes=FALSE, the axes disappears and when they are called back using
axis(side=1)..etc. the axis on sides 1 and 2 do not meet at the bottom left
corner of the graph. I would also like to have the 3rd and 4th axes in
there as well, all meeting in their respective corners.
par(mfrow=c(1,2))
gut<-c("Full",
2012 Jul 12
5
best kernel
What is the best kernel to run? is it better to run 3.4.4 or one from xen
git?
_______________________________________________
Xen-users mailing list
Xen-users@lists.xen.org
http://lists.xen.org/xen-users
2010 Jun 09
1
minor tick marks
Hi !
I need a plot for data extending over several orders of magnitude on the y axis.
The following command generates a nice looking semi-log plot for my data:
plot(x,y,log="y",type="l",lty=3, ylim=c(0.01,2),yaxp=c(0.01,1,1),las=1)
I would appreciate having also minor tick marks in-between the 3 major ticks obtained with the above command. The "minor.tick" function
2006 Oct 02
1
Problems with graphics
Dear all,
I am a SAS user, who's trying R. I am a little bit lost for graphics.
What is the simplest way for plotting y as a function of x with one
symbol (line or dot) for each level of a class variable z (for SAS
langage= plot x*y=z). Can I add vertical bars for standard deviation
stored in a separate variable (say ystd). Finally, is it possible to
do all this with xyplot function
2006 Sep 27
1
PDE
Dear all,
Does any know how to solve PDE with R? The archive list refers to the
use of ODE if PDE are parabolic. I am not a mathematician and this does
not mean anything for me!
help would be very appreciated.
Many thanks
--
___________________________________________________
Christophe NGUYEN
UMR 1220 INRA-ENITAB
Transfert sol-plante et cycle des ?l?ments min?raux
dans les ?cosyst?mes
2003 Oct 22
2
non linear regression with R
Dear Colleagues,
I have x, y data (pollen and seed dispersal from oaks !) that I would
like to fit with a function which look like this:
p(a,b,x,y)=b/(2*pi*a?gamma(2/b))*exp(-(square_root(x?+y?)/a)power(b))
I am looking for a and b values that fit my data at best.
Can someone give me hints to perform such an analysis with R ?
Thanks a lot
Sophie
Sophie Gerber
2006 May 09
8
Dynamically printing a page
Does anyone know of a cross browser solution to print a page/url after a
user clicks a button?
Currently, I''m using a "hidden" iframe to do my bidding. But from my
experience, IE requires that the iframe''s src attribute be set initially to
the url, in order for the page to open properly. I wasn''t able to add the
iframe to the page dynamically, either.
So
2005 Jan 27
1
computing roots of bessel function
I am not yet a R user but I will be soon.
I am looking for the R command and syntax to compute the roots of Bessel
function i.e. computing the z values that lead to Jnu(z)=0 where J is a
Bessel function or order nu.
May You help me ?
thanks in advance.
Dr Catherine COUTAND
Institut National de la Recherche Agronomique (INRA)
umr Physiologie Int?grative de l'Arbre Fruitier et Forestier
2014 Jul 18
1
request of information about creating DLL from R to be used in other languages/programs
Hello
My question is the following. I have tried to find a similar subject in
archives but not found (perhaps bad search!) and I tried R-help and I was
advised that R-devel would perhaps better for my question
So I wonder if it is possible to create a dll from a R code to use it in
another language/program.
Indeed, one of my colleague wrote a R code combining some R functions to
create a
2003 Oct 17
1
heatmap function
Hi all,
By default, the heatmap function gives an image with a dendrogram added
to the
left side and to the top. Is it possible to only add the dendrogram to
the left side
and let the order of the columns unchanged ?
I tried
heatmap(mat, col=rbg,Rowv=res.hclust$order,Colv=1:dim(mat)[[2]]).
In this case, the order of the columns are unchanged but a dendrogram
is added to the top. How can I
2008 Feb 12
4
0.45<0.45 = TRUE (PR#10744)
Dear developer,
in my version of R (2.4.0) as weel as in a more recent version (2.6.0)
on different computers, we found this problem :
> a<-(58/40-1)
> a
[1] 0.45
> b<-(18/40)
> b
[1] 0.45
> a<b
[1] TRUE
> a==b
[1] FALSE
>
Something seems wrong here.
but if we do
> c<-0.45
> d<-0.45
> c<d
[1] FALSE
then everything is ok.
If we use 59