Re: [R] about the possible errors in Rgraphviz Package

[HU,ZHENGJUN]

Hi Duncan,

(They are pretty hard to find, but I think you can find them on 
the Bioconductor site.)  It is > not enough to install the 
Rgraphviz package, you also need to install Graphviz.

 Yes I did. Before installing the Rgraphviz package successfully, 
(1) I downloaded graphviz-2.26.3.msi for MS Windows (XP) and 
installed it successfully and (2) I also installed the packages 
from Bioconductor by: (Note: I use MS Windows XP and R 2.10.1 
version)

source("http://www.bioconductor.org/biocLite.R";)
biocLite()

 I got those error messages:

"Error in inDL(x, as.logical(local), as.logical(now), ...) :
 unable to load shared library
'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll':
  LoadLibrary failure:  The specified module could not be 
found."

 Obviously, it seems it is the package problem because it should 
go to 
'C:/PROGRA~1/R/R-2.10.1/library/Rgraphviz/libs/Rgraphviz.dll' 
instead of
'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll'

 Thank you for the reply. Howard


On Tue Mar 30 12:50:44 EDT 2010, Duncan Murdoch 
<murd...@stats.uwo.ca> wrote:

On 30/03/2010 10:44 AM, HU,ZHENGJUN wrote:
Hi All,

  I tried to install the package of Rgraphviz in the following 
two ways successfully:

source("http://bioconductor.org/biocLite.R";)
biocLite("Rgraphviz")

install.packages(pkgs="C:/Progra~1/R/lib_download/Rgraphviz_1.24.0.zip", 
lib="C:/Progra~1/R/R-2.10.1/library", repos=NULL)

but when I loaded the package though library(Rgraphviz) or 
library("Rgraphviz"), and got the same error message below:

"Error in inDL(x, as.logical(local), as.logical(now), ...) :
  unable to load shared library 
'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll':
  LoadLibrary failure:  The specified module could not be found."


Most likely the problem is that you haven't followed the 
installation instructions.  (They are pretty hard to find, but I 
think you can find them on the Bioconductor site.)  It is not 
enough to install the Rgraphviz package, you also need to install 
Graphviz.

Duncan Murdoch
I think that it is the error in the package because it should go 
to 'C:/PROGRA~1/R/R-2.10.1/library/Rgraphviz/libs/Rgraphviz.dll' 
instead of 
'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll'

Could anyone help me to solve to problem?
Thank you very much for the help. Howard

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--
HU,ZHENGJUN

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