R help - Dec 2011 - Error using function MVN in package MCLUST: Fortran symbol name not in DLL for package

Hi All,

I need to fit a mutlivariate normal model to a dataset in order to obtain the
mean and covariance parameters. I see that the MVN function in the MCLUST
package can do this, however when I try to run even the simplest example
provided in the documentation, as below, I get the following error:

n <- 1000
set.seed(0)
x <- rnorm(n, mean = -1, sd = 2)
mvn(modelName = "X", x)

Error in .Fortran("mvn1d", as.double(data), as.integer(n), double(1), 
:
  Fortran symbol name "mvn1d" not in DLL for package
"mclust"

I cannot see a resolution to this in the list, and wonder whether I need to load
something else separately to the package? Could it be that I need to load a
separate DLL?

Many thanks for your help.
Natalie

(PhD Student in Medical Statistics at Reading University)

I suspect at a minimum we need the basic information requested in the
posting guide: your OS, version of R< version of the package in question.

sessionInfo() is a useful command.

You shouldn't need to load anything beyond the package itself.

Sarah

On Fri, Dec 9, 2011 at 4:01 AM, Natalie Franklin
<N.J.Franklin at pgr.reading.ac.uk> wrote:
> Hi All,
>
> I need to fit a mutlivariate normal model to a dataset in order to obtain
the mean and covariance parameters. I see that the MVN function in the MCLUST
package can do this, however when I try to run even the simplest example
provided in the documentation, as below, I get the following error:
>
> n <- 1000
> set.seed(0)
> x <- rnorm(n, mean = -1, sd = 2)
> mvn(modelName = "X", x)
>
> Error in .Fortran("mvn1d", as.double(data), as.integer(n),
double(1), ?:
> ?Fortran symbol name "mvn1d" not in DLL for package
"mclust"
>
> I cannot see a resolution to this in the list, and wonder whether I need to
load something else separately to the package? Could it be that I need to load a
separate DLL?
>
> Many thanks for your help.
> Natalie
>
-- 
Sarah Goslee
http://www.functionaldiversity.org

On Fri, 9 Dec 2011, Natalie Franklin wrote:
> Hi All,
>
> I need to fit a mutlivariate normal model to a dataset in order to 
> obtain the mean and covariance parameters. I see that the MVN 
> function in the MCLUST package can do this, however when I try to 
> run even the simplest example provided in the documentation, as 
> below, I get the following error:
>
> n <- 1000
> set.seed(0)
> x <- rnorm(n, mean = -1, sd = 2)
> mvn(modelName = "X", x)
>
> Error in .Fortran("mvn1d", as.double(data), as.integer(n),
double(1),  :
>  Fortran symbol name "mvn1d" not in DLL for package
"mclust"
>
> I cannot see a resolution to this in the list, and wonder whether I 
> need to load something else separately to the package? Could it be 
> that I need to load a separate DLL?
Please the footer of this message.  It works for me, and we need the 
'at a minimum' information we asked for to begin to guess what might 
be wrong for you.

However, this is pretty much overkill: there is nothing 'mutlivariate' 
about your example, and even if there were mean() and var() give the 
standard parameter estimates.

>
> Many thanks for your help.
> Natalie
>
> (PhD Student in Medical Statistics at Reading University)
> ______________________________________________
> R-help at 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.
>
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595