@@ -861,7 +861,7 @@ def compute(
                 "AlongSection: Geology polygons are required to split sections; skipping thickness calculation."
             )
             return units
-
+        unit_column = "UNITNAME"
         sections = self.sections.copy()
         geology = geology_data.copy()
Original file line number	Diff line number	Diff line change
`@@ -861,7 +861,7 @@ def compute(`
`861`	`861`	`"AlongSection: Geology polygons are required to split sections; skipping thickness calculation."`
`862`	`862`	`)`
`863`	`863`	`return units`
`864`		`-`
	`864`	`+ unit_column = "UNITNAME"`
`865`	`865`	`sections = self.sections.copy()`
`866`	`866`	`geology = geology_data.copy()`
`867`	`867`