Re: [R] cairoDevice.dll error, but it exists..?

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Mon, 25 May 2009 15:19:59 +0100 (BST)

Most likely you did not install the dependent DLLs: you need Gtk2 (aka GTk+) installed *and in your path*.

That message does not say that 'cairoDevice.dll' cannot be loaded, but a DLL it specified: in interactive use on recent versions of Windows you normally get a pop-up with more information.

The CRAN windows/contrib/2.9 ReadMe says

   Package RGtk2 requires an installed version of Gtk2 with version    number >= 2.10.11.

and I believe something similar is true of cairoDevice by the same author. A good source of a pre-compiled Gtk2 is http://downloads.sourceforge.net/gladewin32/ , and I guess you need gtk-2.12.9-win32-2.exe from gtk+-win32-runtime.

If you insist on using a toolkit designed for Unix on Windows you can expect a rough ride: even when all the Gtk2 components are installed there are lots of issues with fonts.

On Mon, 25 May 2009, 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.

>
> -zubin
>
>

-- 
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

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