Re: [R] Package parallel missing from CRAN_package_db

2018-05-09 Thread Luí­s Moreira de Sousa via R-help
[1] Package > > <0 rows> (or 0-length row.names) > > > pdb[pdb$Package=="tools",]["Package"] > > [1] Package > > <0 rows> (or 0-length row.names) > > --Ista > > On Wed, May 9, 2018 at 8:23 AM, Luí­s Moreira de Sousa via R-help &

[R] Package parallel missing from CRAN_package_db

2018-05-09 Thread Luí­s Moreira de Sousa via R-help
Dear all, I am using the CRAN_package_db function to determine whether the head versions of certain packages match those I need. The parallel package though, is missing from the database: > pdb <- tools:::CRAN_package_db() > pdb[pdb$Package=="parallel",]["Package"] [1] Package <0 rows> (or 0-le

[R] JRI: obtain error messages from the R engine

2017-02-20 Thread Luí­s Moreira de Sousa via R-help
Dear all, I am using JRI to execute a number of computations using the R engine. As pointed in various tutorials out there in the web I am using the eval method of the Rengine class, e.g.: engine.eval("meanVal=mean(rVector)"); At some point the eval method starts returning NULL, which accordin