Transect through polygon shapefile
shapes_transect
QgsProcessingParameterFeatureSource|TRANSECT|Line Transect(s)|1|None|False
QgsProcessingParameterFeatureSource|THEME|Theme|-1|None|False
QgsProcessingParameterField|THEME_FIELD|Theme Field|None|THEME|-1|False|False
OutputTable|TRANSECT_RESULT|Result table