rOntorion - A semantic engine for R

[Jesus David Nunez Campo]

Together with the new Ontorion Fluent Editor release, we have developed a new interface its functionalities for R. Loading, exporting to different formats and quering the underlying semantic engine is all supported in rOntorion. It supports OWL2/SPARQL/RDF and OCNL formats.

The package is publicly available at Cognitum' software repository. If you have access to an R console and you want to get started with rOntorion:

1. Download the package from Cognitum's packages repo (we are working to provide a safe CRAN-like repo, but for now a manual download is required): http://downloads.cognitum.eu/packages/rOntorion_0.1-3.tar.gz
2. Install the rOntorion package:  install.packages("PATH/rOntorion_0.1-2.tar.gz", NULL, repos = NULL, type = "source")

To get a taste of its functionality, type in an R console: 

> library(rOntorion)

> example(rOntorion)

Check out the help:

> help(rOntorion)

[Jesus David Nunez Campo]

We have setup a new CRAN-like repository, so from now on users can add it to their repos using for instance the following command:

> options(repos = c(CRAN='http://cran.r-project.org', COGNITUM='http://downloads.cognitum.eu/packages'))

This does not set the list of repositories at startup: to do so set options(repos =) in a start up file (see help topic Startup). To install the rOntorion package, simply issue:

> install.packages("rOntorion", NULL , repos = getOption("repos"),type="source")

Updates can be done on-demad by issuing:

> update.packages(oldPkgs = c("rOntorion"), repos=getOption("repos"), type="source", ask=FALSE)




 

[Paul Hermans]

Do get an error message when trying to run those in RStudio Version 0.99.467.

* installing *source* package ‘rOntorion’ ...

** R

** inst

** preparing package for lazy loading

** help

Warning: /private/var/folders/pn/_m3b0pln25xc11zz37j0zfyh0000gn/T/RtmpdrlO1P/R.INSTALL17dc3131e08ae/rOntorion/man/ontorion.load.cnl.file.Rd:20: unknown macro '\item'

*** installing help indices

** building package indices

** testing if installed package can be loaded

Multithreaded BLAS/LAPACK libraries detected. Using 8 cores for math algorithms.

Multithreaded BLAS/LAPACK libraries detected. Using 8 cores for math algorithms.

Error in rawToChar(block[seq_len(ns)]) : 

  embedded nul in string: 'PK\003\004\024\0\0\0\0\0\xeb\x815C\0\0\0\0\0\0\0\0\0\0\0\0\005\0\0\0rClr/PK\003\004\024\0\0\0\b\0\xe6\x815C\xdd\v\xec\x85\xdb\002\0\0\xce\004\0\0\020\0\0\0rClr/DESCRIPTION}T\xefo\x9b0\020\xfd\036)\xff\xc3)_\x92H\x81@\xba'

Warning in utils::install.packages(pkg = pth, repos = NULL, type = "source") :

  installation of package ‘/Library/Frameworks/R.framework/Versions/3.2/Resources/library/rOntorion/ctran/rClr_0.5-2.zip’ had non-zero exit status

Error : .onLoad failed in loadNamespace() for 'rOntorion', details:

  call: library(rClr)

  error: there is no package called ‘rClr’

Error: loading failed

Execution halted

ERROR: loading failed

* removing ‘/Library/Frameworks/R.framework/Versions/3.2/Resources/library/rOntorion’

Warning in install.packages :

  installation of package ‘rOntorion’ had non-zero exit status

[Mario Esposito]

Did you find a solution. I have the same problem. It appears that the package isn't properly configured on the other end.

[Paul]

No.

But didn't spend time on it longer either.

Paul

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Kind Regards,

Paul Hermans

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[Jesus David Nunez Campo]

Hello,

Your problems has to do with your operating system; at this moment we only support windows. We are looking forward to support other OS but investing development effort on it depends on the amount of user requests.

Best,

Jesus

[Srinivas Kumar]

Hi,

Any one has an update with regard to deployment of rOntorion in linux platform? Is it possible now?If yes can you please let us know about the url having the details?

Sincerely,

Srinivas

[Srinivas Kumar]

Hi,

Have fried to install rOntiorion package on ubuntu 18 version......I am getting following error when I try to run the rOntioijrnj  example...

[1] "/usr/local/lib/R/site-library/rOntorion/external/FluentEditorClientLib.dll"
Path to FlientEditorClientLib is /usr/local/lib/R/site-library/rOntorion/external/str <- paste0("If a mouse likes a cat then the mouse greets the cat.",
+            "Kitty is a cat.",
+            "Mickey is mouse.",
+            "Mickey likes Kitty.", sep="\n")
> onto<-ontorion.load.cnl.string(str,FALSE)
Error in clrNew("Ontorion.FluentEditorClient") :
  Type:    System.NullReferenceException
Message: Object reference not set to an instance of an object
Method:  Void .ctor()
Stack trace:
  at Ontorion.FluentEditorClient..ctor () [0x0005a] in <34ab6fbeb758433a81d2bea426d7e433>:0
  at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod,object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in <71d8ad678db34313b7f718a414dfcb25>:0

Can some one help me in getting over the defect please?

Sincerely,

P.Srinivas Kumar

[Srinivas Kumar]

Hi,

It is also observed that following error got displayed when rOntorion is getting installed in Ubuntu 18.04 version...

/tmp/RtmpdtFZdD/R.INSTALL82a1b17d9a6/rOntiorion/man/ontorion.load.cnl.file.RD:20  unkown macro :'\item

'

Sincerely.

P.Srinivas Kumar