I'm using an arithmetic function on LiDAR data in a mosaic dataset that has been published in an image service. The function multiplies my native data (UTM Zone 18 NAD83, NAVD88 elevations in meters) by 3.28 so the identify tool will be report units in feet. Does this affect tools like viewshed and watershed since my horizontal coordinate system is still in meters? The exaggerated appearance of my resulting hillshade makes me think the vertical dimension will be 3.28 times what it should be.