Dear all I have a Vertical Mapper question. I am trying to some Viewshed analysis and Point to Point visibility on some grid files I have, (some are tutorial files supplied with VM), but I get the following error message: "Your grid units are not meters or feet! Point to Point requires a grid unit of meters or feet" I can not find any information in the manual or online about how you change the grid unit to meters or feet, is there any? or is it just word of mouth? If anybody can help me please get in touch. Thanks Simon ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]