topic Re: Flip stream polylines based on preliminary DEM in 3D Questions

Flip stream polylines based on preliminary DEM

AgnarRenolen — Mon, 15 Nov 2010 11:18:20 GMT

I want to generate a DEM using Topo to Raster and using the stream data, but my streams are digitized both up-stream and down-stream.

But, if I generate a preliminary DEM without using the streams, I might use that DEM to automatically correct the stream directions based on the elevation at each end of each stream line.

Has anyone made a script/extension that does this?

Agnar

Re: Flip stream polylines based on preliminary DEM

JacquesTardie — Mon, 15 Nov 2010 12:32:43 GMT

You're working with a topo layer and and separate stream layer, or is this from a single layer?

Re: Flip stream polylines based on preliminary DEM

Anonymous User — Mon, 29 Nov 2010 00:49:37 GMT

Original User: jakubsisak

I want to generate a DEM using Topo to Raster and using the stream data, but my streams are digitized both up-stream and down-stream.

But, if I generate a preliminary DEM without using the streams, I might use that DEM to automatically correct the stream directions based on the elevation at each end of each stream line.

Has anyone made a script/extension that does this?

Agnar

I am pretty sure the Topo to Raster tools needs the streams to be 3D polylines otherwise it will not work correctly. If you just need to flip the orientation of the line then select it while editing, right click and flip.