Automatically pick crestlines/top/bottoms of sandwaves/(sanddunes)?

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10-09-2020 01:21 AM
MalinWaage
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Hi! I am looking for a way to automatically draw crestlines/top/bottoms of sandwaves/(sanddunes) from xyz data, so was wondering if anybody have experience with bedfrom characterization and know about a raster function/equation in ArcGiS pro that can do that (which is not the watershed tool)? I have time-lapse data of the sandwave field so an aim is to plot vectors showing direction and distance of sandwave movement, however that part I am able to do in MATLAB. 

I have been able to do it in GRASS by a existing code which uses a curvature map and then extract the most elevated point at a curvature above X in a defined area. However this function creates some undesired gaps in the data, so I am interested if there is another way.  

Best regards,

Malin  

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