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Hello Experts, I'm new with R and having troubles doing my graduation project.I have 20 subfolders including almost 20000 txt files.What i need to do is to create a dtm and add a column to it showing a "class" information of the txt files. My directory source is like "C:\\R\\20news-18828\\comp.graphics" for the comp.graphic subfolder.I need to take only "comp.graphic" part to be seen at the CLASS column.Pleasehelp... -- View this message in context: http://n4.nabble.com/How-to-add-a-column-to-dtm-showing-a-part-from-directory-source-tp1750923p1750923.html Sen...