> I can't make > a transformation by log(x+1) because the result > should be the same!! I don't understand your point here about the additive constant.
You also have to be careful with regressions on log transforms because the 'back transform' is not simply "take the anti-log and subtract the added constant". Isobel Clark http://ecosse.ontheweb.com/whatsnew.htm ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/ -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
