topic Raster ovr files in ArcGIS10. in Data Management Questions https://community.esri.com/t5/data-management-questions/raster-ovr-files-in-arcgis10/m-p/200831#M11536 <HTML><HEAD></HEAD><BODY><SPAN>I have noticed that when I bring in rasters that were referenced in 9.3, the ovr files that are generated are big. Are these files necessary? I have also heard that the ovr file can be compressed. Is anyone familiar with this process?</SPAN></BODY></HTML> Tue, 03 May 2011 19:35:44 GMT NickHolguin 2011-05-03T19:35:44Z Raster ovr files in ArcGIS10. https://community.esri.com/t5/data-management-questions/raster-ovr-files-in-arcgis10/m-p/200831#M11536 <HTML><HEAD></HEAD><BODY><SPAN>I have noticed that when I bring in rasters that were referenced in 9.3, the ovr files that are generated are big. Are these files necessary? I have also heard that the ovr file can be compressed. Is anyone familiar with this process?</SPAN></BODY></HTML> Tue, 03 May 2011 19:35:44 GMT https://community.esri.com/t5/data-management-questions/raster-ovr-files-in-arcgis10/m-p/200831#M11536 NickHolguin 2011-05-03T19:35:44Z Re: Raster ovr files in ArcGIS10. https://community.esri.com/t5/data-management-questions/raster-ovr-files-in-arcgis10/m-p/200832#M11537 <HTML><HEAD></HEAD><BODY><SPAN>The .ovr file is the new </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t00000026000000.htm">overview pyramid file</A><SPAN> that is created in ArcGIS 10.&nbsp; In prior version of ArcGIS the </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009t00000025000000.htm">.rrd file</A><SPAN> was created for the pyramids.&nbsp; These file improve the raster display performance.</SPAN><BR /><SPAN> </SPAN><BR /><SPAN>You can use the </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//0017000000m1000000.htm">Build Pyramid tool</A><SPAN> and define within the </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Pyramid/001w0000001w000000/">Pyramid Environment settings </A><SPAN>to set the compression.</SPAN></BODY></HTML> Wed, 04 May 2011 13:29:52 GMT https://community.esri.com/t5/data-management-questions/raster-ovr-files-in-arcgis10/m-p/200832#M11537 TimothyHales 2011-05-04T13:29:52Z