[kepler-dev] Re: Kepler+R demo problem

[Bertram Ludaescher]

Hi Dan:

Thanks for the quick and detailed reply!

I installed the new version (alpha4_1) from the url you gave me (a
whopping 129MB -- good to have DSL... ;-) and it works like a charm!

Just to be extra safe, I also chose the install-directory to be
c:/kepler (so now we don't know whether "Program Files" would have
worked as well... but someone else might try.. ;-)

Maybe the default should not be in "Program Files" after all (wasn't
that just named that way to create trouble? ;-)

Bertram



Dan Higgins writes:
 > Bertram,
 >     My apologies for not getting back to you earlier. I was at the 
 > dentist's office this afternoon and didn't get back to my office.
 >     My best guess about your problem running the 
 > 'Composite_R_DataReader_Example' is a recently discovered bug in the 
 > CommandLine actor used by this R example workflow. It turns out that the 
 > default installation location used by the Kepler installer (alpha4) on 
 > Windows is inside the "Program Files" directory. That 'space' between 
 > 'Program' and 'Files' causes exactly the problem you describe! One 'fix' 
 > is to reinstall Kepler under a subdirectory that has no spaces (e.g. 
 > directly under C:). That works for me with alpha4. (at least after I 
 > remember to set the 'path' parameter on the Kepler workflow graph to 
 > properly point to where Kepler is installed.)
 >     Note that I am assuming you are running on a Windows machine. There 
 > are some other problems with running the workflow on a Linux or Mac 
 > system. (I can supply some details for that if you need them.)
 > 
 >     We have fixed the 'space' problem in the latest version of Kepler. I 
 > have been working on a new installer with that fix and a fix for the 
 > searching problem we discussed a few days ago. You can actually download 
 > new installers for Windows at http://kepler-project.org/dist/. The new 
 > windows installers are called 'kepler-1.0.0alpha4_1.exe' and 
 > 'kepler-1.0.0alpha4_1-jre.exe'. Note that since they are minor changes, 
 > they are referenced in the file names as 'alpha4_1' (i.e. a minor change 
 > to the alpha4 release). They are not yet linked into the kepler-project 
 > web site download page. Hopefully, I will get that done tomorrow. The R 
 > example should work even when installed in the 'Program Files' directory 
 > with these installers.
 > 
 >     If these comments don't solve your problem, please let me know. I 
 > have run into a lot of path-related problems with workflows like this 
 > (i.e. workflows which use files for passing data) related to different 
 > install locations, working directories,  and machine differences.
 > 
 > Dan
 > 
 >    
 > 
 > Bertram Ludaescher wrote:
 > 
 > >Dan (and others):
 > >
 > >I try to run the Kepler+R workflow (Composite_R_DataReader_Example)
 > >but get the following error message (below) indicating that the JPEG
 > >file cannot be opened... 
 > >
 > >Any idea why this is? 
 > >
 > >I've got Kepler 1.0.0alpha4 and R installed.
 > >
 > >thanks!
 > >
 > >Bertram
 > >
 > >  
 > >
 > >
 > > ------------------------------------------------------------------------
 > >