Correction Factors for Tree Plot Areas Intersected by Stand Boundaries
Convert Preprocessed Data Back to Original Units
Convert Coordinates of the German National Forest Inventory to Cartesi...
Check Validity of Boundaries
Convert Boundaries to Polygons
Get the Boundary Radius for a Given Diameter at Breast Height
Correction Factors for Tree Plot Areas Intersected by Stand Boundaries
Get Default Options for treePlotArea
Get Intersection Point of Two Lines
Get a Theoretical Maximum Distance for a Tree
Get the Slope–intercept Form of an Orthogonal
Plot Tree Plot Area
Get a Slope–intercept Form from a Two-point Form of an Equation
Calculate Intersections of Circle by a Straight Line
Select Valid Angle Counts Only
Set Default Options for treePlotArea
Throw a Condition
Correction Factors for Tree Plot Areas Intersected by Stand Boundaries
Validate Data and Optionally Delete Missing Data
Give the Length of a Vector
The German national forest inventory uses angle count sampling, a sampling method first published as `Bitterlich, W.: Die Winkelzählmessung. Allgemeine Forst- und Holzwirtschaftliche Zeitung, 58. Jahrg., Folge 11/12 vom Juni 1947` and extended by Grosenbaugh (<https://academic.oup.com/jof/article-abstract/50/1/32/4684174>) as probability proportional to size sampling. When plots are located near stand boundaries, their sizes and hence their probabilities need to be corrected.