cairoDevice.dll error, but it exists..?

On 5/25/2009 9:43 AM, zubin wrote:

Hello, running windows vista, R2.9.  Installed the following 
libraries: (*latticist*, *playwith* and *Cairo*)

Wanted then to run, to evaluate the visualization features:

data(iris)

library(latticist)

latticist(iris)

However, i tested my desktop and laptop and get the following error 
after typing latticist(iris):

latticist(iris)
Loading required package: playwith
Loading required package: cairoDevice
Error in inDL(x, as.logical(local), as.logical(now), ...) :
unable to load shared library 
'C:/Users/luna/Documents/R/win-library/2.9/cairoDevice/libs/cairoDevice.dll': 
LoadLibrary failure:  The specified module could not be found.

Error: package 'cairoDevice' could not be loaded



However, i navigate to the location in the path above and i do see 
the cairoDevice.dll file, so i can't figure out what's going on.  
Again, i tested 2 machines, with R2.9 and Vista, same error on both.

Don't you get a popup error dialog?  I do, and it says that 
libgdk-win32-2.0-0.dll was not found.  Only when I click on okay does 
it return to the console to tell me about the cairoDevice failure.  So 
I think the real problem is with the libgdk not being present, and 
that causes the cairoDevice dll to fail to load.  Windows doesn't tell 
R about the reason, it just says it failed.

The reason that library was not installed is that I didn't have RGtk2 
installed properly.  Try library(RGtk2), and make sure it works (and 
let it install GTK if it wants), and things should be fine.

Duncan Murdoch