R help - Oct 2010 - Issues loading rtiff 1.4.1 with R 2.6.2 on Windows

Dear R-users,

I successfully installed rtiff on by R installation, but when I tried to
load it, I got:
>local({pkg <- select.list(sort(.packages(all.available = TRUE)))
+ if(nchar(pkg)) library(pkg, character.only=TRUE)})
Error in dyn.load(file, ...) :
unable to load shared library
'C:/PROGRA~1/R/R-26~1.2/library/rtiff/libs/rtiff.dll':
LoadLibrary failure: Das angegebene Modul wurde nicht gefunden.

When running "nm" from MinGW on C:\Program
Files\R\R-2.6.2\library\rtiff\libs\rtiff.dll, it tells me "no symbols"
:-/

So I tried to compile the dll from the sources and did this:

gcc -shared -o rtiff.dll rtiff.c -ltiff -lr -I"C:\Program
Files\GnuWin32\include" -I"C:\Program Files\R\R-2.6.2\include"
-L"C:\Program Files\GnuWin32\lib" -L"C:\MinGW\lib"
-L"C:\Program
Files\R\R-2.6.2\modules" -L"C:\Program Files\R\R-2.6.2\bin"

This indeed creates a dll witch exports 614 symbols. Also my dll is
29KB, the original one just 9 Kb...

However, R still throws the same error...

Is the infamous space in the Path to R a problem?

Thanks a lot for any hint on this!

P. S: It seems that the author had issues with compilation (ages ago): 
http://www.mail-archive.com/r-help at stat.math.ethz.ch/msg54165.html

Cheers,
Daniel

--
Daniel Oderbolz
Paul Scherrer Institut
CH-5232 Villigen 

Laboratory of Atmospheric Chemistry, 
Gasphase and Aerosol Chemistry Group
OFLA/007

Tel: +41 (0)56 310 2449
Fax:               4525
daniel.oderbolz [AT] psi.ch

Probably there are not many people on this list left with such an 
ancient installation. Please try R-2.12.0 alpha.

Uwe Ligges


On 01.10.2010 11:49, Oderbolz Daniel wrote:
> Dear R-users,
>
> I successfully installed rtiff on by R installation, but when I tried to
> load it, I got:
>
>> local({pkg<- select.list(sort(.packages(all.available = TRUE)))
> + if(nchar(pkg)) library(pkg, character.only=TRUE)})
> Error in dyn.load(file, ...) :
> unable to load shared library
> 'C:/PROGRA~1/R/R-26~1.2/library/rtiff/libs/rtiff.dll':
> LoadLibrary failure: Das angegebene Modul wurde nicht gefunden.
>
> When running "nm" from MinGW on C:\Program
> Files\R\R-2.6.2\library\rtiff\libs\rtiff.dll, it tells me "no
symbols"
> :-/
>
> So I tried to compile the dll from the sources and did this:
>
> gcc -shared -o rtiff.dll rtiff.c -ltiff -lr -I"C:\Program
> Files\GnuWin32\include" -I"C:\Program
Files\R\R-2.6.2\include"
> -L"C:\Program Files\GnuWin32\lib" -L"C:\MinGW\lib"
-L"C:\Program
> Files\R\R-2.6.2\modules" -L"C:\Program Files\R\R-2.6.2\bin"
>
> This indeed creates a dll witch exports 614 symbols. Also my dll is
> 29KB, the original one just 9 Kb...
>
> However, R still throws the same error...
>
> Is the infamous space in the Path to R a problem?
>
> Thanks a lot for any hint on this!
>
> P. S: It seems that the author had issues with compilation (ages ago):
> http://www.mail-archive.com/r-help at stat.math.ethz.ch/msg54165.html
>
> Cheers,
> Daniel
>
> --
> Daniel Oderbolz
> Paul Scherrer Institut
> CH-5232 Villigen
>
> Laboratory of Atmospheric Chemistry,
> Gasphase and Aerosol Chemistry Group
> OFLA/007
>
> Tel: +41 (0)56 310 2449
> Fax:               4525
> daniel.oderbolz [AT] psi.ch
>
>
> ______________________________________________
> 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.

I used rtiff and found a potential problem, which is not strictly 
rtiff's fault.  The more-or-less standard out there is that tiff data 
should be 8-bits.  I needed to be able to read the full 16-bit pixel 
values from images taken in my lab.  After some hacking, I wrote a 
script which pulled the parameters of interest out of the header (like 
number of rows and columns), then read the data section out.

Perversity being what it is, I don't have a copy of the function where I 
am right now, but if you would like a copy, please drop me an email.

Carl