Resources on using R in QGIS for R users?

The principle is simple if you have R installed and is usable in command line.

You can create and/or execute a R Script from QGIS using Processing in QGIS version 2.0 or Sextante in version 1.8):

see:

• Setting “R Folder” Path in QGIS Sextante
• Port your R scripts to QGIS using SEXTANTE
• QGIS with R: Working with the SEXTANTE plugin
• and others

The tool that I was looking for is the rpy extension of Python, which permits execution of R commands from the Python console.

Gene provided some useful suggestions in the previous answer, and then suggested rpy in response to my further questions.