topic Re: Convert Polyline to Raster? in 3D Questions https://community.esri.com/t5/3d-questions/convert-polyline-to-raster/m-p/565028#M3392 <HTML><HEAD></HEAD><BODY><SPAN>Through the environment settings of </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//001w0000000m000000.htm">'Snap Raster'</A><SPAN> and specifying the </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Output_Extent/001w00000009000000/">spatial extent</A><SPAN>, you can force the rasters to line up.However based on your description, I am not sure if the railway line will always correspond with your flow accumulation since you are trying to match up more than just the upper left cell of the raster.&nbsp; Those environment variables should help but since you are converting a line to a raster you will have to determine if the line actually matches up with its counterpart on the existing raster.</SPAN></BODY></HTML> Wed, 08 Jun 2011 10:32:06 GMT JeffreySwain 2011-06-08T10:32:06Z Convert Polyline to Raster? https://community.esri.com/t5/3d-questions/convert-polyline-to-raster/m-p/565027#M3391 <HTML><HEAD></HEAD><BODY><SPAN>I currently have a 90m Cell Size Flow Accumulation Grid and need to convert a Railway Alignment Polyline into a raster that will match the Flow Accumulation Grid. How do I ensure that the Railway Alignment Grid overlays correctly on top of the Flow Accumulation Grid. I'm trying to generate a new Flow Accumulation Grid based on the intersection of the two grids. Any advice in converting the Railway Alignment Polyline into a Railway Alignment Grid with the lease amount of error will be appreciated.</SPAN><BR /><BR /><SPAN>Regards</SPAN></BODY></HTML> Tue, 07 Jun 2011 19:59:06 GMT https://community.esri.com/t5/3d-questions/convert-polyline-to-raster/m-p/565027#M3391 PeterWilson 2011-06-07T19:59:06Z Re: Convert Polyline to Raster? https://community.esri.com/t5/3d-questions/convert-polyline-to-raster/m-p/565028#M3392 <HTML><HEAD></HEAD><BODY><SPAN>Through the environment settings of </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//001w0000000m000000.htm">'Snap Raster'</A><SPAN> and specifying the </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Output_Extent/001w00000009000000/">spatial extent</A><SPAN>, you can force the rasters to line up.However based on your description, I am not sure if the railway line will always correspond with your flow accumulation since you are trying to match up more than just the upper left cell of the raster.&nbsp; Those environment variables should help but since you are converting a line to a raster you will have to determine if the line actually matches up with its counterpart on the existing raster.</SPAN></BODY></HTML> Wed, 08 Jun 2011 10:32:06 GMT https://community.esri.com/t5/3d-questions/convert-polyline-to-raster/m-p/565028#M3392 JeffreySwain 2011-06-08T10:32:06Z