SAP Predictive Analysis comes with the option of integrating with R Language for using the Algorithms available in PA.

    R, being an Open source product, there are quick upgrades to the versions of R. But, the problem arises when we try to use a higher version of R  (other than 2.15.1), which is not supported by SAP PA.

     Here are few steps that you can follow to use R with SAP PA, I have gone through few references and come up with this method of installing R.

[Note : Click on the Images to get a clear view of what it is.]

Step 1: Install SAP PA [Predictive Analysis].

Follow the steps given in this link for installing SAP PA, trial version.

http://help.sap.com/businessobject/product_guides/SAPpa10/en/pa1_0_11_user_en.pdf

Step 2: Follow the link to download Windows Version of R 2.15.1 for your system.

http://cran.r-project.org/bin/windows/base/old/2.15.1/R-2.15.1-win.exe

Run the setup after you agree with the GNU Public license, which will have R installed in your system.

Step 3: Open the R GUI in your windows System.

R GUI.JPG

Fig 1: Navigate your Programs to start R GUI.

You will be getting an User Interface console of R like this,

R Console.JPG

Fig 2: The R GUI Console


Once you are ready with R, we need to install certain packages in R that is required by SAP PA.

So follow the menu path to install the packages,

In R console, Click, Menu Bar,

Select Packages -> Install Packages ->

Install package.JPG

Fig 3: Menu Path to select the “Install Package” option.


Choose the CRAN Mirror closest to your location.

CRAN Mirror.JPG

Fig 4: Select the CRAN Mirror


Then select the Package (rJava) from the list.

rJava.JPG

Fig 5: Select the Package (rJava).

Once you press OK, the package rJava will be installed in your system.

Step 4: Repeat Step 3 for the Package (AMORE).

These two Packages (rJava) and (AMORE) are required to use R algorithms in SAP PA.

Step 5: Set up the environment variable for R.

Simply type the following code in R Console.

(Note: The path varies as per your system, please take note of it, and change it while executing in the console).

Sys.setenv(R_LIBS = “C:/Program Files/R/R-2.15.1/library”);
Sys.setenv(R_HOME = “C:/Program Files/R/R-2.15.1/”);
Sys.setenv(Path = “existing path; C:/Program Files/R/R-2.15.1/library/rJava/jri; C:/Program Files/R/R-2.15.1/bin”);

Step 6: Open SAP PA and we need to configure PA to use R Language.

Follow the Menu path

All Programs -> SAP Business Intelligence -> SAP Predictive Analysis

In the Menu Bar, follow the path,

File -> Install and Configure R

PA.JPG

Fig 6: Select “Install and Configure R” option in SAP Predictive Analysis

You get a Pop up, where you can find option to Install R, and to Configure R.

Since we have already manually Installed R, no need to do the first step.

Kindly navigate to the Configuration Tab, you will have to select the Check box, and Browse to the File path where R is Installed in your system.

Refer the Image for help.

Config R.JPG

Fig 7: Configure R to be used in SAP PA

Then select OK.

Now we have configured R in PA.

When you navigate to the Predict Tab in PA, you can find the R Algorithms enabled.

R Algorithms in PA.JPG

Fig 8: To verify if R has been Configured properly in SAP PA.

Set the parameters for the R Algorithms and play with your data.

For any Queries,
Please post your comments here.


Thank you.
Regards,


Tamilnesan G



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6 Comments

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  1. Matej Kocbek

    Hi Tamilnesan,

    I get error “java.lang.Throwable: Unexpected error occurred   nullnull” when run some R-algorthem. If I run standard SAP PA algorithem works correct.

    If you knew, please help me.

    BR

    Matej

    (0) 
    1. Tamilnesan Ganesan Post author

      Hi Matej,

           In addition to the Path settings in java, as recommended by Michael, Please check out the Parameters that you Pass into the Algorithm, while building it.

      These kind of errors normally occur, when there is no proper data for processing, and the system checks for a “Try, Catch and Throw” sequence.

           The system throws a message, I suspect that, Since the parameters are not recognized by the Logic, we get the “nullnull” in the Parameter section of the Message.

           Please try with other fields for the Algorithm and let me know.

      Mean while I will look into further Solutions for this and let you know, I am also not very sure of this.

      Thank you Matej !!

      Regards,

      Tamilnesan

      (0) 
  2. Michael Laux

    Hello Matei,

    did you check your JAVA_HOME Path ?
    Additionally, did you check if you are

    running 64bit Java with a 64bit R ?

    I solved my Java-Problems checking this.

    Regards,

    Michael

    (0) 
  3. Matej Kocbek

    Hi Michael and Tamilnesan,

    JAVA_HOME was set correct and I use all 32 bit Java, R and SAP PA.

    I install this package in R and now works R algorithem in SAP PA.

    rJava

    RODBC

    RJDBC

    DBI

    monmlp

    AMORE

    XML

    pmml

    arules

    caret

    reshape

    plyr

    foreach

    iterator

    So is not enought to istall just rJava and AMORE.

    Ragards,

    Matej

    (0) 

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