topic Focal Statistics (median 1200m radius) returns NoData in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/focal-statistics-median-1200m-radius-returns/m-p/56048#M768 <HTML><HEAD></HEAD><BODY><SPAN>In ArcMap 10.0, I am trying to calculate a raster of focal median values from a slope raster (30 m cell size) using a 1200 meter radius, but it returns NoData in almost all of the cells.&nbsp; There is a halo of values around the </SPAN><SPAN style="font-style:italic;">outside</SPAN><SPAN> of the slope raster, but NoData throughout the extent of the original slope raster.&nbsp; I have the "Ignore NoData" option checked. See attached image of original slope raster and focal statistic halo.</SPAN><BR /><BR /><SPAN>I have run the focal statistics tool successfully on the same slope raster for a focal median with a 400 meter radius and for focal majority and focal mean calculations with 1200 meter radii.&nbsp; Despite this, focal statistics does not work for median statistics with radii of 600, 800, or 1200 meters.&nbsp;&nbsp; </SPAN><BR /><BR /><SPAN>Any ideas?</SPAN><BR /><BR /><A href="https://lh4.googleusercontent.com/_GzReuoftYYg/Ta7yPDxlSpI/AAAAAAAAEH4/u6JOvx_4yiY/s640/FOCAL_STAT_QUESTION.jpg"><IMG src="https://lh4.googleusercontent.com/_GzReuoftYYg/Ta7yPDxlSpI/AAAAAAAAEH4/u6JOvx_4yiY/s640/FOCAL_STAT_QUESTION.jpg" /></A></BODY></HTML> Wed, 20 Apr 2011 12:23:41 GMT DougLeasure 2011-04-20T12:23:41Z Focal Statistics (median 1200m radius) returns NoData https://community.esri.com/t5/arcgis-spatial-analyst-questions/focal-statistics-median-1200m-radius-returns/m-p/56048#M768 <HTML><HEAD></HEAD><BODY><SPAN>In ArcMap 10.0, I am trying to calculate a raster of focal median values from a slope raster (30 m cell size) using a 1200 meter radius, but it returns NoData in almost all of the cells.&nbsp; There is a halo of values around the </SPAN><SPAN style="font-style:italic;">outside</SPAN><SPAN> of the slope raster, but NoData throughout the extent of the original slope raster.&nbsp; I have the "Ignore NoData" option checked. See attached image of original slope raster and focal statistic halo.</SPAN><BR /><BR /><SPAN>I have run the focal statistics tool successfully on the same slope raster for a focal median with a 400 meter radius and for focal majority and focal mean calculations with 1200 meter radii.&nbsp; Despite this, focal statistics does not work for median statistics with radii of 600, 800, or 1200 meters.&nbsp;&nbsp; </SPAN><BR /><BR /><SPAN>Any ideas?</SPAN><BR /><BR /><A href="https://lh4.googleusercontent.com/_GzReuoftYYg/Ta7yPDxlSpI/AAAAAAAAEH4/u6JOvx_4yiY/s640/FOCAL_STAT_QUESTION.jpg"><IMG src="https://lh4.googleusercontent.com/_GzReuoftYYg/Ta7yPDxlSpI/AAAAAAAAEH4/u6JOvx_4yiY/s640/FOCAL_STAT_QUESTION.jpg" /></A></BODY></HTML> Wed, 20 Apr 2011 12:23:41 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/focal-statistics-median-1200m-radius-returns/m-p/56048#M768 DougLeasure 2011-04-20T12:23:41Z Re: Focal Statistics (median 1200m radius) returns NoData https://community.esri.com/t5/arcgis-spatial-analyst-questions/focal-statistics-median-1200m-radius-returns/m-p/56049#M769 <HTML><HEAD></HEAD><BODY><SPAN>Hey flowleisurly,</SPAN><BR /><SPAN>I have a similar problem while executing FocalStats for median on a slope raster. Did you find a solution to your problem?</SPAN><BR /><SPAN>Sincerely,</SPAN><BR /><SPAN>Johannes</SPAN></BODY></HTML> Mon, 27 Jun 2011 22:06:59 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/focal-statistics-median-1200m-radius-returns/m-p/56049#M769 johannesuhl 2011-06-27T22:06:59Z