Thank you very much for your response. I have downloaded the StereoStat program however I am encountering two issues: First my frequency table (tab delimited format w/ columns "frequency" and "azimuth") will not 'open/import' or 'insert' into a database. I define the columns as '#' and 'trend' or 'strike' and the database shows up empty. Second, I was looking through the rose plot instructions and I do not see where I can specify my pre-existing bins or classes. According to the instructions online I can only define the 'number' of classes, or the 'size' of classes. Any further direction is greatly appreciated.