Petr -
your suggestion WORKS!
Thank you so much, really!
happy-Chaehan
On Wed, Mar 17, 2010 at 2:22 PM, Petr PIKAL <petr.pi...@precheza.cz> wrote:
> Hi
>
>
> r-help-boun...@r-project.org napsal dne 17.03.2010 13:04:05:
>
> > Jim & Petr,
> > Thank you for your hint - I am really grateful, because they helped me
> to
> > get one step further,
> > and although now the problem lies somewhere else, you encouraged that we
> can
> > find the
> > solution soon!
> >
> > 1. To Petr's comments
> >
> > Petr, your hint to define y:
> > y <- LVvar[,1, drop=FALSE]
> > did solve the problem, so I got a data.frame with the indexes.
>
> Going through help page
>
> y <- as.matrix(LVvar[,1, drop=FALSE])
> x <- as.matrix(LVvar[,-1]
> svp <- ksvm(x, y, type="nu-svc")
>
> shall work. However as I never used this package and function I am not
> sure if it is used correctly.
>
> Regards
> Petr
>
>
> >
> > Yet, then I turned to the call
> > svp <- ksvm(x, y, type="nu-svc")
> > Error in .local(x, ...) : y must be a vector or a factor.
> >
> > So then I followed your second advice, looking up the additional
> information
> > from help file:
> > ==
> > x is defined as:
> > a symbolic description of the model to be fit. When not using a formula
> x
> > can be a matrix or vector containing the training data or a kernel
> matrix of
> > class kernelMatrix of the training data or a list of character vectors
> (for
> > use with the string kernel). Note, that the intercept is always
> excluded,
> > whether given in the formula or not.
> >
> > y is defined as
> > a response vector with one label for each row/component of x. Can be
> either
> > a factor (for classification tasks) or a numeric vector (for
> regression).
> > ==
> >
> > So I tried to convert LVvar into a matrix via as.matrix() but didn't
> make a
> > difference.
> > ============================================================
> >
> > 2. To Jim's comments
> >
> > On Wed, Mar 17, 2010 at 1:10 AM, jim holtman <jholt...@gmail.com> wrote:
> >
> > > Please provide what LVvar is.
> > >
> >
> > LVvar is a dataframe
> >
> >
> > > At least provide str(LVvar), or preferably a 'dput' of the object.
> > >
> >
> > str(LVvar) returns:
> >
> > 'data.frame': 55 obs. of 7 variables:
> > $ rPerform : num 0.0682 -0.0682 -0.7443 0.7443 0.2619 ...
> > $ rCoordCap: num 4.98 6.08 5.73 5.92 4.96 ...
> > $ rKnowGrow: num 4.5 5.92 5.23 6.08 4.38 ...
> > $ rGoalcom : num 5.81 6.58 6 5.75 5.29 ...
> > $ rSupport : num 6.15 6.92 6.6 4.92 6 ...
> > $ rOpcomm : num 5.98 6.25 6.33 6.5 5.29 ...
> > $ rT2Cadap : num 5.03 6.12 4.9 6.25 5.12 ...
> > - attr(*, "na.action")=Class 'omit' Named int 40
> > .. ..- attr(*, "names")= chr "40"
> >
> > ==
> >
> > dput(LVvar) returns (abbreviated with ...):
> >
> > structure(list(rPerform = c(0.0681818181818183, -0.0681818181818183,
> > -0.744318181818182, 0.744318181818182, 0.261931818181818,
> > -0.900568181818182,
> > ...
> > rCoordCap = c(4.97916666666667,
> > 6.08333333333333, 5.73333333333333, 5.91666666666667, 4.95833333333333,
> > ...
> > .Names = c("rPerform", "rCoordCap", "rKnowGrow",
> > "rGoalcom", "rSupport", "rOpcomm", "rT2Cadap"), row.names = c(1L,
> > 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 11L, 12L, 13L, 14L, 15L,
> > 16L, 17L, 18L, 19L, 20L, 21L, 22L, 23L, 24L, 25L, 26L, 27L, 28L,
> > 29L, 30L, 31L, 32L, 33L, 34L, 35L, 36L, 37L, 38L, 39L, 41L, 42L,
> > 43L, 44L, 45L, 46L, 47L, 48L, 49L, 50L, 51L, 52L, 53L, 54L, 55L,
> > 56L), na.action = structure(40L, .Names = "40", class = "omit"), class =
> > "data.frame")
> >
> >
> >
> > >
> > > PLEASE do read the posting guide
> > > http://www.R-project.org/posting-guide.html<http://www.r-project.org/
> > posting-guide.html>
> > > and provide commented, minimal, self-contained, reproducible code.
> > >
> > >
> >
> > Here's my try (please have mercy for a complete R beginner):
> >
> > library("kernlab")
> > library("methods")
> >
> > # Data Definitions
> > LV <- c("rPerform","rCoordCap", "rKnowGrow", "rGoalcom", "rSupport",
> > "rOpcomm", "rT2Cadap" )
> >
> > # creates a dataframe
> > LVvar <- na.omit(loopLV_IndexScores(LV, u_proj))
> >
> > x <- (LVvar[,-1])
> > y <- (LVvar[,1])
> > svp <- ksvm(x, y, type="nu-svc")
> > svp
> >
> > ===
> >
> > Thanks so much for not giving up.
> >
> > Cheers,
> > Chaehan
> >
> >
> >
> >
> > > On Tue, Mar 16, 2010 at 6:03 PM, Chaehan So <chaehan...@gmail.com>
> wrote:
> > >
> > >> Dear r-helpers,
> > >>
> > >> I am getting a mismatch error between two variables:
> > >>
> > >> svp <- ksvm(x, y, type="nu-svc")
> > >> Error in .local(x, ...) : x and y don't match.
> > >>
> > >> and I suspect that it might be due to missing index in the y variable
> > >> which
> > >> I defined as:
> > >>
> > >> y <- (LVvar[,1])
> > >>
> > >> I tried various methods to make the y assignment in the same format
> as x,
> > >> which is a dataframe
> > >> x <- (LVvar[,-1])
> > >>
> > >> and looks like
> > >> x
> > >> rCoordCap rKnowGrow rGoalcom rSupport rOpcomm rT2Cadap
> > >> 1 4.979167 4.500000 5.812500 6.145833 5.979167 5.031250
> > >> ...
> > >>
> > >> but I still get y without the indexes as a vector:
> > >> y
> > >> [1] -1.00000000 -6.91193182 -1.00000000 0.74431818 -6.91193182
> > >>
> > >>
> > >> Why are the results different for x and y, even though the assignment
> is
> > >> the
> > >> same
> > >> except I exclude the columns for y?
> > >>
> > >> Cheers,
> > >> Chaehan
> > >>
> > >> [[alternative HTML version deleted]]
> > >>
> > >> ______________________________________________
> > >> R-help@r-project.org mailing list
> > >> https://stat.ethz.ch/mailman/listinfo/r-help
> > >> PLEASE do read the posting guide
> > >> http://www.R-project.org/posting-guide.html<http://www.r-project.org/
> > posting-guide.html>
> > >> and provide commented, minimal, self-contained, reproducible code.
> > >>
> > >
> > >
> > >
> > > --
> > > Jim Holtman
> > > Cincinnati, OH
> > > +1 513 646 9390
> > >
> > > What is the problem that you are trying to solve?
> > >
> >
> >
> >
> > --
> > Humboldt University Berlin, Germany
> > Institute of Psychology
> > Rudower Chaussee 18, Room 1221
> > 12489 Berlin
> > Germany
> > Office: +49 30 2093 - 9337
> > Mobile: +49 171- 626 9373
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>
--
Humboldt University Berlin, Germany
Institute of Psychology
Rudower Chaussee 18, Room 1221
12489 Berlin
Germany
Office: +49 30 2093 - 9337
Mobile: +49 171- 626 9373
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