I spotted at least one other anomaly
Bottom left of this object has a long sliver that you might want to remove Cheers From: Qgis-user <[email protected]> On Behalf Of [email protected] Sent: Saturday, 9 January 2021 7:28 AM To: qgis-user <[email protected]> Subject: [Qgis-user] How do I clean up this geometry? This linked <https://drive.google.com/file/d/1o1KthonUPSZGWp6QImS9btbj799Lv-om/view?usp=sharing> file, proclaimed.zip, is the boundary of the Santa Fe National Forest as supplied by the USFS. If you focus on this area There is some problematic geometry. If I do a dissolve I get this: If I remove the holes, I'm left with this bit of stray boundary: I then remove that with edit nodes. But the resulting polygon is still not clean - if I try to use the field calculator to add the area (using $area), I get null. There is bad geometry that I'm not spotting, but how do I find it? The second linked <https://drive.google.com/file/d/1ul60p0rSdwKcmt6zUivSMIPQHXYc_rcT/view?usp=sharing> file, clean.zip, is the result of the steps above.
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