Segmentation de cours d'eau pour ArcHydro 10.2

Question

<\/HEAD>J'essaie de délimiter un terrain combiné avec des cours d'eau et des bassins versants connus en utilisant le dernier workflow. Lorsque j'arrive à la Segmentation de cours d'eau, j'ai un gros problème. Le champ SinkWatershedGrid n'accepte que des fichiers points vectoriels. Veuillez voir la capture d'écran jointe. J'essaie de charger ma grille de bassin versant de sink qui est une grille raster. Toute aide serait appréciée.<\/SPAN> Merci,<\/SPAN> Dustin Atwater<\/SPAN> Analyste SIG<\/SPAN> AMEC<\/SPAN><\/BODY><\/HTML>

ChristineDartiguenave · Answer

It looks like the tool is not seing the correct definition for the input from the XML and reverts to the default (point) type. My clue is that the name in the UI should be: "Sink Watershed Grid" instead of "SinkWatershedGrid".

Can you try in a new map, save it and click the tool right away to see whether the UI shows correctly with the space in the name?

Christine Dartiguenave
Esri Water Resources Team

DustinAtwater · Answer

Just wondering if any of the ArcHydro folks can explain this or have a work around. To reiterate, the Stream Segmentation dialog box has been designed to only allow vector point files in a field that raster files are required in order to complete the command. Any help would be greatly appreciated.

Thanks,
Dustin Atwater

MarkBoucher · Answer

The Arc Hydro help states:If there is a grid that has a tag "Sink Watershed  Grid�?�, it will be used as a  default for the third input. If not, the user needs to select a grid that will  be tagged with the "Sink Watershed Grid�?� tag at the end of the operation. This  input is optional.

Is your grid "'tagged as" Sink Watershed Grid?  I'm not sure what "tagged" means.  It definitly should be a grid. Maybe it needs to be in integer instead of a float grid. ?

The Arc Hydro tool box help says:Input SinkWatershedGrid  (optional) Input Sink Watershed Grid. Used to mask the sink watersheds when stream  segments should not be created within sink watersheds.

Note here there are no spaces in SinkWatershedGrid.