private void checkSPOTIsInstalled() throws InPUTException {
REXP spotInstalled = runCommand("is.element('SPOT', installed.packages()[,1])", true);
if (!spotInstalled.asBool().isTRUE())
throw new InPUTException(
"In order to use InPUT tuning extension, you have to install the SPOT package for R: \"install.packages('SPOT')\" in the R console.");
}
