strsplit(x, split= " ")
2013/7/3 Dan Murphy
> I have a vector of strings that contain mathematical expressions. E.g.,
> x <- c("5 <= 7", "z = 1+2")
> and I would like to decompose each expression into its left- and
> right-hand-side components etc., output something like
>
> "5" "<=" "7"
> "z"
Dear useRs,
I am currently using the ctree function (package "party") and am stuck at
the problem of getting a one-node tree (a tree with no splits consisting of
the root only) even if I maximally loosen all the stopping criteria
(mincriterion = 0, minbucket = 0, minsplit = 0).
In order to chec
I suggest using vectorization :
find_row <- function(m,v) { which(!(abs(rowSums(m - rep(v, each = nrow(m)))
)) > 0) }
The function matroweqv mentioned above would give any row with the first
element equal to the first element in vector v.
The function find_row matches each row of the matrix as a
Dear R community,
I have recently discovered the package oblique.tree and I must admit that
it was a nice surprise for me,
since I have actually made my own version of a kind of a classifier which
uses the idea of oblique splits (splits by means of hyperplanes).
So I am now interested in comparing
Dear R-society,
I know this is probably a question to LibSVM, but I have not found a
LibSVM mailing list, so I would be really grateful if someone from this
list helped me.
In the LibSVM documentation I have found a passage about dealing with
unbalanced sets, that says that in this case one sets
Use the `xlim` parameter of the `plot` function.
IFor example, if X1 and X2 are the variables that contain the values of your
x-axis,
do xlim1 <- range(X1,X2),
than do plot(, xlim = xlim1,...)
Hope this helps.
2011/6/15 bjmjarrett
> Hi all,
>
> I have scoured the archives of this foru
Hello, dear R community.
The thing is that I am not in the least a developer, neither do I want to
create a package of my own.
But recently I have found a package LogicForest, which is in the base
written in Fortran I think. And well,
in its manual it is written that there are several parameters t
2010/11/23 Ignacio Alborés
> I want to obtain a barplot with error bars and a mean plot with error bars
> with other scale on the left in the same plot. I need help to get the
> same
> x axis (centered) when overlay two plots (barplot2 and plotCI (or
> lineplot.CI) with errorbars), with difere
Good afternoon,
I am actually concerned with this issue too. What if I run R at work and I
simply do not have the necessary access-rights in order to delete the .Rdata
file. Do I really have only 3 choices: ask the admin to delete it, live with
it always reloading the previous workspace, resave an
I am very sorry. It's just that it's not my computer that the problem
occured on... It's at work. So I am going to see what distribution it was
when I get there. But I have no chance to know how R was installed... since
it wasn't me who installed it.
But could you please tell me , at least, where
olution
of this problem ?
Any help would be greatly appreciated.
Sincerely yours,
Yuliya Matveyeva.
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PLEASE do read the pos
may be a good idea to contact the package maintainer
> of interval first.
>
> Uwe Ligges
>
>
>
>
> On 10.10.2010 17:33, Yuliya Matveyeva wrote:
>
>> Dear R community,
>> I am using the R package `interval` in order to perform some modelling
>> tests of the
ctly could you please tell
if there might be a non-package-specific reason for a segfault in my case ?
Sincerely yours,
Yuliya Matveyeva.
2010/10/10 Uwe Ligges
> Please try with the R-2.12.0 ReleaseCandidate and thwe most recent version
> of the package (please report its version number!)
tDeferredWarnings())}
invisible(structure(msg, class = "try-error"))})
9: try(do.call(initfit, args = list(L = L, R = R, Lin = Lin, Rin = Rin,
A = A)))
10: icfit.default(L = left, R = right)
11: icfit(L = left, R = right)
Possible actions:
1: abort (with core dump, if enabled)
2: nor
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