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metric areas greater than total DGO area in scrape #1024

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jtgilbert opened this issue Sep 24, 2024 · 3 comments
Open

metric areas greater than total DGO area in scrape #1024

jtgilbert opened this issue Sep 24, 2024 · 3 comments
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@jtgilbert
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results from select * from vw_metrics where active_area > dgo_area_acres

area_issue

@jtgilbert
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694 rows returned

@philipbaileynar
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The source of the problem is that there are multiple polygons for some DGOs. When we join RCAT DGOAttributes to RME DGOs we have to do it based on level_path and seg_distance because the FIDs can be different between RCAT and RME. But this causes duplicate data when there are multiple DGOs in RCAT with the same level_path and seg_distance. The root cause of the problem is VBET, when it creates weird centrelines and DGO polygons. These cascade to RCAT and all other downstream models.

Example: HUC 0808010105 in Louisiana. Level path 20000200000091 and seg_distance 50 have two DGO records. They are discontinuous polygons, each with their own VBET metrics shown below.

Screenshot 2024-09-24 at 4 23 10 PM

Bottom line. We need to review VBET in these new landscapes, such as the flat, bayou. Here's a satellite and VBET centerlines.

Screenshot 2024-09-24 at 4 24 13 PM

@philipbaileynar
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and here's a video explaining the problem further

https://youtu.be/PeN3z8UAG8Y

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