Is there a way that I can limit flow direction to D4 instead of having it use D8?
Preferably looking for a way to do it within ArcMap.
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1The question you are asked is very short but it's good question if you explain in more detailed.For example what is D4,D8. Did you try to write a script about this?– BBG_GISCommented Nov 21, 2017 at 20:51
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Can be done but 4 remaining are going to be diagonal. Set some cells to nodata, e.g. white ones on a chess board.– FelixIPCommented Nov 21, 2017 at 22:44
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@wetland, if you look up any flow direction tool, it goes over what D8 is: pro.arcgis.com/en/pro-app/tool-reference/spatial-analyst/…– Brandon G.Commented Nov 22, 2017 at 19:00
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For D4, I would just like to limit the direction options to straight north, south, east, and west.– Brandon G.Commented Nov 22, 2017 at 19:01
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I've just come across this an need to do something similar. Would it be possible to post the workflow for this please? Thanks– Josh WCommented Jun 1, 2022 at 14:57
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1 Answer
Let me know if this is what you expecting to see:
I'll post workflow.
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That is what I was looking for! We decided to stick to D8 and just work around it. But it may be worth posting if other people come to this question. Commented Feb 20, 2018 at 16:58