topic Re: I need a help ! in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-need-a-help/m-p/24532#M339 <HTML><HEAD></HEAD><BODY><P>You require the Spatial Analyst Extension...if you have it or aren't sure, go to the Customize menu, select Extensions then toggle it on.&nbsp; If it is not present, then it wasn't purchased or registered.</P></BODY></HTML> Thu, 09 Oct 2014 07:08:54 GMT DanPatterson_Retired 2014-10-09T07:08:54Z I need a help ! https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-need-a-help/m-p/24531#M338 <HTML><HEAD></HEAD><BODY><P>I have a file in a tiff format. But I want to convert it to raster and since I need to use it as a dem. I read that tiff is raster but I cannot convert to grid. Please help me <SPAN aria-label="Sad" class="emoticon_sad emoticon-inline" style="height:16px;width:16px;"></SPAN></P></BODY></HTML> Thu, 09 Oct 2014 06:57:44 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-need-a-help/m-p/24531#M338 lindamurdoch 2014-10-09T06:57:44Z Re: I need a help ! https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-need-a-help/m-p/24532#M339 <HTML><HEAD></HEAD><BODY><P>You require the Spatial Analyst Extension...if you have it or aren't sure, go to the Customize menu, select Extensions then toggle it on.&nbsp; If it is not present, then it wasn't purchased or registered.</P></BODY></HTML> Thu, 09 Oct 2014 07:08:54 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/i-need-a-help/m-p/24532#M339 DanPatterson_Retired 2014-10-09T07:08:54Z