R help - Dec 2012 - Calling a .bat to set environment variables and subsequent .exe execution from within R

Dear list,

I have found a thread dealing with similar problems with a Mac, but somehow
I cannot get it to work and the problem is slightly different:
I am using the shell() command to execute a program from within R. The
problem is that I need to execute SDKShell.bat file first that sets the
environment variables for the program ogr2ogr.exe:

shell(cmd = "C:\\GDAL_1.9.2_MAPSERVER_6.2.0\\SDKShell_original.bat")
Setting environment for using the GDAL and MapServer tools.
Hiding the OCI plugin library.
D:\R_working_directory\Koordinatenproblem>> source(.trPaths[5], echo=TRUE,
max.deparse.length=150)

shell( cmd="ogr2ogr -s_srs EPSG:31254 -t_srs EPSG:25832
D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser_25832.shp
D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser.shp",
invisible
= FALSE, 
intern = TRUE )
 shell(cmd="ogr2ogr -s_srs EPSG:31254 -t_srs EPSG:25832
D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser_25832.shp
D:\\R_working_director ..." ... [TRUNCATED] 
[1] "Der Befehl \"ogr2ogr\" ist entweder falsch geschrieben
oder" "konnte
nicht gefunden werden."                              
attr(,"status")
[1] 1
Warnmeldung:
Ausf?hrung von Kommando 'C:\Windows\system32\cmd.exe /c ogr2ogr -s_srs
EPSG:31254 -t_srs EPSG:25832
D:\R_working_directory\Koordinatenproblem\Fliessgewaesser_25832.shp
D:\R_working_directory\Koordinatenproblem\Fliessgewaesser.shp' ergab Status
1 

The problem is that he cmd seems to "forget" the result of the command
before, i.e. the cmd is shut between different calls by shell()!? As a
result I cannot execute ogr2ogr.exe. Is there an argument or sth. to work in
the same cmd-session using subsequent shell() executions from R?

Thank you, best regards and have a nice Christmas,
Ludwig

ps: I have also tried to rewrite the .bat to set the environment variables
permanently, but I did not manage that either.



-----
Dipl. Geogr. Ludwig Hilger
Wiss. MA
Lehrstuhl f?r Physische Geographie
Katholische Universit?t Eichst?tt-Ingolstadt
Ostenstra?e 18
85072 Eichst?tt
--
View this message in context:
http://r.789695.n4.nabble.com/Calling-a-bat-to-set-environment-variables-and-subsequent-exe-execution-from-within-R-tp4653814.html
Sent from the R help mailing list archive at Nabble.com.

If all you need to do is to set environment variables, you can do that
from within R, e.g.
> shell("echo %FOO%")
%FOO%
> Sys.setenv("FOO"="42");
> shell("echo %FOO%")
42

My $.02

On Sun, Dec 23, 2012 at 11:14 AM, Ludwig Hilger <l.hilger at ku.de>
wrote:
> Dear list,
>
> I have found a thread dealing with similar problems with a Mac, but somehow
> I cannot get it to work and the problem is slightly different:
> I am using the shell() command to execute a program from within R. The
> problem is that I need to execute SDKShell.bat file first that sets the
> environment variables for the program ogr2ogr.exe:
>
> shell(cmd =
"C:\\GDAL_1.9.2_MAPSERVER_6.2.0\\SDKShell_original.bat")
> Setting environment for using the GDAL and MapServer tools.
> Hiding the OCI plugin library.
> D:\R_working_directory\Koordinatenproblem>> source(.trPaths[5],
echo=TRUE,
> max.deparse.length=150)
>
> shell( cmd="ogr2ogr -s_srs EPSG:31254 -t_srs EPSG:25832
> D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser_25832.shp
> D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser.shp",
invisible
> = FALSE,
> intern = TRUE )
>  shell(cmd="ogr2ogr -s_srs EPSG:31254 -t_srs EPSG:25832
> D:\\R_working_directory\\Koordinatenproblem\\Fliessgewaesser_25832.shp
> D:\\R_working_director ..." ... [TRUNCATED]
> [1] "Der Befehl \"ogr2ogr\" ist entweder falsch geschrieben
oder" "konnte
> nicht gefunden werden."
> attr(,"status")
> [1] 1
> Warnmeldung:
> Ausf?hrung von Kommando 'C:\Windows\system32\cmd.exe /c ogr2ogr -s_srs
> EPSG:31254 -t_srs EPSG:25832
> D:\R_working_directory\Koordinatenproblem\Fliessgewaesser_25832.shp
> D:\R_working_directory\Koordinatenproblem\Fliessgewaesser.shp' ergab
Status
> 1
>
> The problem is that he cmd seems to "forget" the result of the
command
> before, i.e. the cmd is shut between different calls by shell()!? As a
> result I cannot execute ogr2ogr.exe. Is there an argument or sth. to work
in
> the same cmd-session using subsequent shell() executions from R?
>
> Thank you, best regards and have a nice Christmas,
> Ludwig
>
> ps: I have also tried to rewrite the .bat to set the environment variables
> permanently, but I did not manage that either.
>
>
>
> -----
> Dipl. Geogr. Ludwig Hilger
> Wiss. MA
> Lehrstuhl f?r Physische Geographie
> Katholische Universit?t Eichst?tt-Ingolstadt
> Ostenstra?e 18
> 85072 Eichst?tt
> --
> View this message in context:
http://r.789695.n4.nabble.com/Calling-a-bat-to-set-environment-variables-and-subsequent-exe-execution-from-within-R-tp4653814.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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
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