Displaying 20 results from an estimated 7000 matches similar to: "What does "smaller than" comparison do on strings?"
2010 Mar 30
2
simple loop iteration
Hi R mailing list,
probably a very basic problem here, I try to do the following:
> Q<-c(1,2,3)
> P<-c(4,5,6)
> A<- data.frame(Q,P)
> A
Q P
1 1 4
2 2 5
3 3 6
this is my simplified data.frame (matrix) now I try to create following
loop for subtraction of element within the data.frame:
> for(i in length(A[,"P"]-1){
delta[i]<-
2017 Jun 01
1
Restore a node in a replicating Gluster setup after data loss
Hi
We have a Replica 2 + Arbiter Gluster setup with 3 nodes Server1,
Server2 and Server3 where Server3 is the Arbiter node. There are several
Gluster volumes ontop of that setup. They all look a bit like this:
gluster volume info gv-tier1-vm-01
[...]
Number of Bricks: 1 x (2 + 1) = 3
[...]
Bricks:
Brick1: Server1:/var/data/lv-vm-01
Brick2: Server2:/var/data/lv-vm-01
Brick3:
2011 Jun 30
1
Error "singular gradient matrix at initial parameter estimates" in nls
Greetings,
I am struggling a bit with a non-linear regression. The problem is
described below with the known values r and D inidcated.
I tried to alter the start values but get always following error
message:
Error in nlsModel(formula, mf, start, wts):
singular gradient matrix at initial parameter estimates
Calls: nls -> switch -> nlsModel
I might be missing something with regard to the
2010 Sep 29
1
Fitting a half-ellipse curve
Dear mailing list,
I have following array:
X2 Y2
[1,] 422.7900 6.0
[2,] 469.8007 10.5
[3,] 483.9428 11.0
[4,] 532.4917 25.5
[5,] 596.1942 33.5
[6,] 630.8496 40.5
[7,] 733.2996 45.0
[8,] 946.4779 32.0
[9,] 996.8068 35.5
[10,] 1074.3310 23.0
I do afterwards the following:
plot.new()
plot.window(xlim=c(min(X1)-50,max(X1)+50),
2009 Jan 07
2
NA and NaN question
Hi all,
I ran into a problem in some of my code that could be traced back to 'mean'
sometimes returning NA and sometimes NaN, depending on the value of na.rm:
> mean(c())
[1] NA
> mean(c(NA),na.rm=T)
[1] NaN
However, I don't understand the reasoning behind this and would appreciate and
explanation.
I understand that the mean of an empty vector is not definied, but I
2008 Sep 23
5
xyplot problem
Hi all,
I am trying to produce some panels with dots in an X/Y plane where the
diameter of the dots indicates a Z value (like e.g. earthquake maps where dot
sizes indicate magnitudes and X/Y the location).
This works fine with xyplot, e.g.:
xyplot(1:3~1:3,cex=1:3,pch=16)
However, when I do this with a panel variable, e.g.:
x<-rep(1:3,5)
y <- rep(1:3,5)
sz <- rep(1:5,each=3)
grp
2011 Dec 19
2
nlrob problem
Dear all,
I am not sure if this mail is for R-help or should be sent to R-devel
instead, and therefore post to both.
While using nlrob from package 'robustbase', I ran into the following
problem:
For psi-functions that can become zero (e.g. psi.bisquare), weights in
the internal call to nls can become zero. Example:
d <- data.frame(x=1:5,y=c(2,3,5,10,9))
d.nlrob <-
2007 Apr 13
3
Just another ini patch
Hi,
well after some ever further investigation of some bugs, I ended up
cleaning up the code, again. I also fixed some really heavy memory
leaks in csvToList and made it in general more stable.
Regards,
Patrick "Marex" Niklaus
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2006 Dec 18
2
Error compiling on HP-UX
Dear all,
I hope this is the right mailing list for my question -- I felt that this was
too technical for R-help.
I am trying to compile R-2.4.0 on a HP-UX system:
./configure
MAKE=gmake --prefix=$HOME --without-x --without-tcltk --disable-R-profiling --without-readline --disable-multibyte
R is now configured for ia64-hp-hpux11.23
Source directory: .
Installation directory:
2011 Oct 07
1
modify "..." (optional args)
Hi all,
Is there a way to modify the optional arguments (...) passed to a
function, so that these can be passed in modified form to a subsequent
function call? I checked "Programming with Data" but could not find a
solution there.
What I'd like is something along these lines:
test <- function(x,y,...) {
if(!hasArg(xlab)) { ___add xlab to ...___ }
if(hasArg(xlab)) {
2003 Oct 08
1
Contrast specified with C() - R vs S-Plus problem
Hi,
For a n-level factor, I'd like to specify the first contrast and have
the remaining n-2 constructed automatically so that the set is
orthogonal. I then test the contrasts with summary.lm(anova-object).
In S-Plus, the following works:
>y.anova <- aov( y ~ C(CO2,c(1,0,-1)) )
>summary.lm(y.anova)
In R, it fails with the following error:
>levels(CO2)
[1]
2003 Nov 20
5
Find value in vector (or matrix)
Hi all,
Is there a function to check if a particular value is contained in a
vector? I've looked at grep in the hope that I could use a Perl-like
syntax, but obviously it's different...
I'd like to do something like:
y <- c("a","b","c")
if("a" in y)
{
# "a" is not in y
}
Also, is there a way to
2003 Nov 21
3
plot map of areas
Hi all,
Given a number of points (x,y) in a plane, I'd like to plot a map of
polygons, so that
1) each polygon contains exactly one point
2) the polygon defines the area for which this specific point is
closer than any other point.
It's a bit like a map of areas "influenced" by that point, and it's
obviously a matter of intersecting the perpendicular bisectors
2007 Mar 22
1
Mailing list beserk - next thing
Hi there!
As there seems to be a problem with mailman, I unsubscribed yesterday
evening. But I still get Mail - this morning about 700!!! Is there anything I
can do about this? I don? t want to get flooded anymore. I sure will
resubscribe as soon as the problem is fixed, but as for now, this is not
acceptable!!!
Greets,
Dennis
--
"Feel free" - 10 GB Mailbox, 100 FreeSMS/Monat ...
2007 Apr 11
2
list of features and question to technology
Hey there,
I am wondering if there is any list available giving me a list of feature of icecast (maybe also in comparision with shoutcast).
Moreover, I was thinking if and how the following scenario is solved: suppose I'd like to stream 1000 different songs at one time, i.e. 1000 user will listen to different mp3s hosted by my streaming server. Are in this scenario all 1000 songs (at
2003 Oct 22
2
plotmath question: y'
Hi all,
I wonder how to correctly write the following expression (it's the axis
label in a plot command):
ylab=expression(y' == y - bar(y) )
Somehow the single quote in y' is causing the problems, I guess because
it is interpreted as a quote...
Does it have to be escaped? But how?
Thanks for your help
Pascal
2007 Feb 16
1
Fwd: Re: user add script, machine add script
Hello to all,
after noone bother my subject. I think I'm all alone making mistakes
on this thing. But I should really know if it is possible to mange
the administration of samba in an comfortable way. After all the years I
worked with it I never did manage it to be in an sufficent manner.
Is there a plan in the future to have a central administration within the samba package?
--------
2003 Nov 05
3
converting column to factor *within* a data frame
Hi all,
I repeatedly encounter the following problem: After importing a data set
into a data frame, I wish to set a column with numeric values to be a
factor, but can't figure out how to do this. Also, I do not wish to
write as.factor(x) all the time. I can create a new vector with x <-
factor(x), but the new vector resides outside the attached data frame.
Pascal
> attach(ngrad)
2003 Nov 25
2
R recursion depth and stack size
Hi all,
I am playing around with latin squares, and wrote a recursive function
that searches for valid combinations.
Apart from the fact that there are very many, I run into troubles
beginning with size 10x10 because the recursion depth becomes too large
(max of 10x9-1=89 in this case).
Why is this a problem? Isn't there enough space allocated to the stack?
Can this be increased? The
2020 Feb 16
3
'ssh -V' still shows 'OpenSSH_8.1' with version 8.2
Hi, I just built version 8.2 and it seems like the version has not been
bumped.
# ssh -V
OpenSSH_8.1, LibreSSL 3.0.2
#