These functions are no longer available.
readSIAR: The SIAR webpage cannot be accessed with a direct
URL but using javascript code. Therefore, the function
readSIAR no longer works. This help page is still here as a
reference. The SIAR webpage is now https://eportal.mapa.gob.es//websiar/Inicio.aspx.
TargetDiagram, analyzeData: Use the tdr package