I once had a look at some data that came from some machine that was used fo= r in vitro analysis of cells. The data format seemed a bit funny. There were some rows, but many columns= .. IIRC, the length of time the monitoring was done determined the number o= f columns, and the number of rows corresponded I think to the input channel= s. My question is this. Is this very common thing to see? How likely are we = in today's world now that we are starting to look at data and start to proc= ess it to see data that looks like this? I wouldn't blink an eye at a tabl= e with 100 million rows, but a table with 100 rows and 100 million columns = might confuse me. Thank you! Lindy --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .