left

is.left.of

This function returns a logical vector indicating which elements of
 the given points P0 are left of the directed edge P1-&gt;P2.

 spatial 

A constrained two-dimensional Delaunay triangulation package
providing both triangulation and generation of voronoi mosaics of
irregular spaced data.
Please note that most of the functions are now also covered in package
interp, which is a re-implementation from scratch under a free license
based on a different triangulation algorithm.

Fortran code by R J Renka R functions by Albrecht Gebhardt  With contributions from Stephen Eglen stephenancedacuk

tripack

Triangulation of Irregularly Spaced Data

Albrecht Gebhardt

R. J. Renka

Stephen Eglen

Sergej Zuyev

Denis White

left function

<dl> <dt>x0</dt>
<dd>Numeric vector, 'x' coordinates of points P0 to check</dd> <dt>y0</dt>
<dd>Numeric vector, 'y' coordinates of points P0 to check, same length as 'x'.</dd> <dt>x1</dt>
<dd>'x' coordinate of point P1</dd> <dt>y1</dt>
<dd>'y' coordinate of point P1</dd> <dt>x2</dt>
<dd>'x' coordinate of point P2</dd> <dt>y2</dt>
<dd>'y' coordinate of point P2</dd></dl>

Arguments

Author

Determines whether given points are left of a directed edge. — left

<dl>

 <dt>x0</dt>
<dd>Numeric vector, 'x' coordinates of points P0 to check</dd>

 <dt>y0</dt>
<dd>Numeric vector, 'y' coordinates of points P0 to check, same length as 'x'.</dd>

 <dt>x1</dt>
<dd>'x' coordinate of point P1</dd>

 <dt>y1</dt>
<dd>'y' coordinate of point P1</dd>

 <dt>x2</dt>
<dd>'x' coordinate of point P2</dd>

 <dt>y2</dt>
<dd>'y' coordinate of point P2</dd>

</dl>

Determines whether given points are left of a directed edge.

left: Determines whether given points are left of a directed edge.

Description

Usage

Value

Arguments

Author

See Also

Examples