Hi Renger,
thanks a lot for the reply.
-Yes, I did load the library before calling igdx
-I have updated R to the latest version but I still get the same error. I suspect it is because I am not using the last version of GAMS; In that respect I can’t do anything because I don’t have the license for the latest version 
Or might be something else, I have no clue.
Again, thanks a lot!
Have a nice day
Javier
PS:
\
sessionInfo()
R version 3.0.1 (2013-05-16)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=en_US.UTF-8
[4] LC_COLLATE=en_US.UTF-8 LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=C LC_NAME=C LC_ADDRESS=C
[10] LC_TELEPHONE=C LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] gdxrrw_0.3.0 reshape2_1.2.2
loaded via a namespace (and not attached):
[1] plyr_1.8 stringr_0.6.2 tools_3.0.1
igdx(“/home/me/GAMS23.7”)
Error loading the GDX API from directory /home/me/GAMS23.7
Could not load symbol ‘gdxGetLastError’: (null)
The GDX library has not been loaded
igdx()
The GDX library has not been loaded
On Friday, July 19, 2013 2:13:07 PM UTC+2, Renger van Nieuwkoop wrote:
Hi Javier
I checked on my computer, and it runs fine.
Renger
Here is the output I get on my windows machine
\
library(gdxrrw)
igdx(“c:/program files/gams”)
The GDX library has been loaded
GDX library load path: c:/program files/gams
sessionInfo()
R version 3.0.1 (2013-05-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=German_Switzerland.1252 LC_CTYPE=German_Switzerland.1252
[3] LC_MONETARY=German_Switzerland.1252 LC_NUMERIC=C
[5] LC_TIME=German_Switzerland.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] gdxrrw_0.3.0 reshape2_1.2.2
loaded via a namespace (and not attached):
[1] compiler_3.0.1 fortunes_1.5-0 plyr_1.8 stringr_0.6.2 tools_3.0.1
gdxInfo()
-
Library location: unknown
-
Library version: GDX Library 24.1.2 r40979 Released Jun 16, 2013 WEI x86_64/MS Windows
From: gams...@googlegroups.com [mailto:gams...@googlegroups.com] On Behalf Of javiersa...@gmail.com
Sent: Mittwoch, 17. Juli 2013 13:17
To: gams...@googlegroups.com
Subject: GAMS and R: Error when using igdx
Hi all,
I am trying to run GAMS and R together using package “gdxrrw”. I followed the steps written in here:
http://support.gams.com/doku.php?id=gdxrrw:interfacing_gams_and_r
I downloaded and installed package “gdxrrw_0.2.0_r_x86_64-redhat-linux-gnu.tar.gz”. The rest of the packages have been installed successfully. The problem comes when I tried to “initialize” the GAMS libraries using igdx() function. The following error appears, assuming that I have installed GAMS in /home/me/GAMS23.7:
igdx(‘/home/me/GAMS23.7’)
Error loading the GDX API from directory /home/me/GAMS23.7
Could not load symbol ‘gdxGetLastError’: (null)
The GDX library has been not been loaded
Also note that I have been using GAMS before, also in connection with Matlab, and it worked fine. I am using the following R vesion:
sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=C LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] gdxrrw_0.2.0 reshape2_1.2.2
loaded via a namespace (and not attached):
[1] plyr_1.8 stringr_0.6.2 tools_2.15.2
It seems that no one else have posted a message about this error, so that is why I would like to share it with you. I would like to know if someone else had the same error and in that case to know how you solved it. Thanks a lot for your time.
Have a nice day!
Best
Javier
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