create 20 foot contours from 10 meter DEM

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10-06-2010 11:46 AM
JamesS1
Occasional Contributor
Can anyone detail the steps in creating a contour layer with intervals of 20 feet from 10 meter resolution DEMs?
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2 Replies
DanPatterson_Retired
MVP Emeritus
10 m resolution has nothing to do with the Z values, just the X,Y cell size.
what are your Z values in? if they are in meters, then contour the data using the metric equivalent of 20 feet
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ChrisSnyder
Regular Contributor III
You could also use the "z-factor" parameter in the Contour tool to do the unit conversion (for example, from a DEM in meters to contours in feet). From meters to feet would be a z-factor of 3.2808 and of course the inverse would be 0.3048.
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