[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 
<murdoch at 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