Contours feet & meters

Discussion created by recurvata on Dec 21, 2010
Latest reply on Dec 23, 2010 by recurvata
I have data in Michigan GeoRef meters coordinate system. I've added a point layer that also has a depth attribute field. The depth, however, is in feet, not meters. I want to add contour lines every ten feet. I've interpolated the data to a raster, where the values match the depth, but I'm guessing being treated as meters instead of feet (ex. value -1000 interpreted as -1000 meters, not feet).
I then try Surface Analysis - Contours, but not sure what to put as the contour value and the z-factor. I've tried 3.2808 & .3048 in different combinations, but not sure if that's correct, and whether it gives correct data in 10 foot intervals. Any ideas? Thanks.