poly_area

Mainly for internal use. Determines the area of a polygon based on
its x and y coordinates.
This function is a reimplementation of `soiltexture::TT.polygon.area()`
and only re-implemented to avoid extra dependencies.

Treemaps are a visually appealing graphical representation of
numerical data using a space-filling approach. A plane or 'map' is
subdivided into smaller areas called cells. The cells in the map are
scaled according to an underlying metric which allows to grasp the
hierarchical organization and relative importance of many objects at
once. This package contains two different implementations of treemaps,
Voronoi treemaps and Sunburst treemaps. The Voronoi treemap function
subdivides the plot area in polygonal cells according to the highest
hierarchical level, then continues to subdivide those parental cells
on the next lower hierarchical level, and so on. The Sunburst treemap
is a computationally less demanding treemap that does not require
iterative refinement, but simply generates circle sectors that are
sized according to predefined weights. The Voronoi tesselation is
based on functions from Paul Murrell (2012)
<https://www.stat.auckland.ac.nz/~paul/Reports/VoronoiTreemap/voronoiTreeMap.html>.

Michael Jahn

WeightedTreemaps

Generate and Plot Voronoi or Sunburst Treemaps from Hierarchical
Data

David Leslie

Ahmadou Dicko

Dunipace Eric

Paul Murrell

poly_area function

<dl><dt>poly_x</dt>
<dd>(numeric) X coordinates of each vertices of the polygon</dd>
<dt>poly_y</dt>
<dd>(numeric) Y coordinates of each vertices of the polygon</dd></dl>

Arguments

poly_area — poly_area

<dl>

<dt>poly_x</dt>
<dd>(numeric) X coordinates of each vertices of the polygon</dd>


<dt>poly_y</dt>
<dd>(numeric) Y coordinates of each vertices of the polygon</dd>

</dl>

poly_area: poly_area

Description

Usage

Value

Arguments

See Also