new_kites: Add a kites shape to a plot

In j-martineau/pj: Element-wise plots by JAM

Add a kites shape to a plot

Description

A kites shape is a collection of kites using the same subset of locating parameters from among x, y, w, y, re, and te. Kites are located in plotting regions using bounding rectangles, a concept used in defining function parameters. See the defining bounding rectangles section for details.

Usage

new_kites(
  pj,
  pvx,
  pvy,
  x,
  y,
  w = NA,
  h = NA,
  re = NA,
  te = NA,
  px = 0.5,
  py = 0.5,
  region = ".",
  look = NULL,
  mod = NULL,
  name = "."
)

Arguments

pj	an object of class 'pj'.
pvx	proportion scalar indicating how far across the bounding rectangle the bottom and top kite vertices are located. See the using pvx and pvy to locate vertices section.. Value must be between 0 and 1 inclusive.
pvy	proportion scalar indicating how far up the bounding rectangle the left and right kite vertices are located. See the using pvx and pvy to locate vertices section. Value must be between 0 and 1, inclusive.
x	numeric vector giving horizontal location. When x is used in conjunction with px and w these vectors define a fixed horizontal point for each shape. When x is used in conjunction with re, x defines the left edge of the bounding rectangle of each shape.
y	numeric vector giving vertical location. When y is used in conjunction with py and h these vectors define a fixed vertical point for each shape. When y is used in conjunction with te,y defines the bottom edge of the bounding rectangle of each shape.
w	NA or a numeric vector defining the width of each bounding rectangle.
h	NA or a numeric vector defining the height of each bounding rectangle.
re	NA or a numeric vector defining the right edge of each bounding rectangle.
te	NA or a numeric vector defining the top edge of each bounding rectangle.
px	NA or a proportion vector defining the location of x as the proportion of the distance from left to right edge of bounding rectangles. Values are generally between 0 and 1, inclusive, however, when they are outside those values, fixed points x will lie outside bounding rectangles.
py	NA or a proportion vector defining the location of y as the proportion of the distance from bottom to top edge of bounding rectangles. Values are generally between 0 and 1, inclusive, however, when they are outside those values, fixed points y will lie outside bounding rectangles.
region	either character scalar "." to indicate the most recently used region, a positive integer to indicate the ID number of a region (0 indicates the background region), or a character scalar to indicate the name of a region ('bg' indicates the background region).
look	an optional list containing up to four lists specifying looks to apply to the shape. See the using look to make shapes appear section.
mod	an optional list containing up to four lists specifying modifications to apply to the shape. See the using mod to transform shapes section.
name	character scalar indicating a name for the shape. The special value "." indicates that the pj package create a default name for the shape.

Value

pj with the addition of the defined kites.

Using pvx and pvy to locate vertices

pvx indicates, as a proportion, how far across the bounding rectangle the bottom and top vertices are located (from left to right). pvy indicates, as a proportion, how far up the bounding rectangle the left and right vertices are located. For example:

pvx = 0.5, pvy = 0.5

Produces a diamond/rhombus, or a kite that is symmetric both horizontally and vertically.

pvx = 0.5, pvy = 0.8

Produces a kite that is symmetric horizontally, but whose left and right vertices are located 80% of the way up the bounding rectangle.

pvx = 0.8, pvy = 0.5

Produces a kite that is symmetric vertically, but whose bottom and top vertices are located 80% of the way across the bounding rectangle (from left to right).

pvx = 0.8, pvy = 0.2

Produces a kite that is asymmetric both vertically and horizontally, with left and right vertices located 20% of the way up the bounding rectangle and bottom and top vertices located 80% of the way across the bounding rectangle (from left to right).

pvx = 0.5, pvy = 0

Produces an upward pointing isosceles triangle.

Defining bounding rectangles

Bounding rectangles can be defined in a number of ways. The following shows valid combination of non-NA locating arguments:

(x + px) + w + (y + py) + h

(horizontal anchor) + width + (vertical anchor) + height

(x + px) + w + y + te

(horizontal anchor) + bottom edge + top edge

x + re + (y + py) + h

left edge + right edge + (vertical anchor) + height

x + re + y + te

left edge + right edge + bottom edge + top edge

Bounding rectangles, px, and py

When px is not NA, it represents where the value x is located as a proportion of the distance between the left and right edge of each bounding rectangle. Likewise, when py is not NA, it represents where the value y is located as a proportion of the distance between the bottom and top edge of each bounding rectangle. For example:

• when px = 0.5 and py = 0.5, the center of the bounding rectangle is located at (x, y).

• when px = 0 and py = 0, the bottom left corner of the bounding rectangle is located at (x, y).

• when px = 1 and py = 1, the top right corner of the bounding rectangle is located at (x, y).

• when px = 1/3 and py = 2/3, the point 1/3 of the way from left to right edge and 2/3 of the way from bottom to top edge of the bounding rectangle is located at (x, y).

px and py can be less than 0 or greater than 1, resulting in the fixed point (x, y) being outside the bounding rectangle.

Using look to make shapes appear

By itself, this function simply defines the location of x-y pairs in the assigned region for the specified shape. Various looks can be added to the shape using the look parameter or via the add_ends, add_fills, add_glyphs, add_labels, add_lines, and add_marks functions. Sub-lists of the look argument must be named 'end', 'fill', 'glyph', 'label', 'line', and/or 'mark' to indicate that line end marks, fill colors, glyphs (single characters), labels, lines, and/or point marks be added to the shape.

Using mod to transform shapes

Shapes can be transformed in four ways: dilation, reflection, rotation, and translation/. using the mod argument or the mod_dilate, mod_reflect, mod_rotate, and mod_translate. Sub-lists of the mod argument must be named 'dilate', 'reflect', 'rotate', and/or 'translate' to indicate that a dilation, reflection, rotation, and or translation be applied to the shape.

Argument recycling

The argument set {x, y, w, h, re, te, px, py} is recycled.

See Also

Other new_quads: new_diamonds(), new_quads(), new_rects()

j-martineau/pj documentation built on March 19, 2022, 5:32 a.m.