title: In Rapidminer once I import a data set how do I change the type of a column?
body: <p>I've imported a datset into Rapidminer 5 and one of the columns that was supposed to be nominal or polynomial was set as a numeric. My data set has over 500 attributes so I don't really want to have to reimport my data every time I realize I've made a mistake like this. Is there some way to either automate the import process so that it saves the column types I set each time or can I go back and edit my already imported data set attribute types?</p>