topic Re: create 20 foot contours from 10 meter DEM in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165627#M2359 <HTML><HEAD></HEAD><BODY><SPAN>10 m resolution has nothing to do with the Z values, just the X,Y cell size.</SPAN><BR /><SPAN>what are your Z values in? if they are in meters, then contour the data using the metric equivalent of 20 feet</SPAN></BODY></HTML> Wed, 06 Oct 2010 19:47:59 GMT DanPatterson_Retired 2010-10-06T19:47:59Z create 20 foot contours from 10 meter DEM https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165626#M2358 <HTML><HEAD></HEAD><BODY><SPAN>Can anyone detail the steps in creating a contour layer with intervals of 20 feet from 10 meter resolution DEMs?</SPAN></BODY></HTML> Wed, 06 Oct 2010 18:46:01 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165626#M2358 JamesS1 2010-10-06T18:46:01Z Re: create 20 foot contours from 10 meter DEM https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165627#M2359 <HTML><HEAD></HEAD><BODY><SPAN>10 m resolution has nothing to do with the Z values, just the X,Y cell size.</SPAN><BR /><SPAN>what are your Z values in? if they are in meters, then contour the data using the metric equivalent of 20 feet</SPAN></BODY></HTML> Wed, 06 Oct 2010 19:47:59 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165627#M2359 DanPatterson_Retired 2010-10-06T19:47:59Z Re: create 20 foot contours from 10 meter DEM https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165628#M2360 <HTML><HEAD></HEAD><BODY><SPAN>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.</SPAN></BODY></HTML> Thu, 07 Oct 2010 17:29:23 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/create-20-foot-contours-from-10-meter-dem/m-p/165628#M2360 ChrisSnyder 2010-10-07T17:29:23Z