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Data Generation for 2D Sine and Cosine Waves

Source: R/wave_data.R
wave_data.Rd

A tool for making data frames filled with data that displays sine or cosine waves when graphed.

The geom_path and geom_polygon geoms are recommended with this data for use in ggplot2 for generative art.

Usage

wave_data(
  start,
  end,
  size = 1,
  type = "sin",
  orientation = "horizontal",
  freq = 3,
  n_points = 500,
  color = NULL,
  fill = NULL,
  group_var = FALSE,
  dampen = NULL,
  amplify = NULL
)

Arguments

start

Numeric value. The starting point of the wave on the coordinate system. By default refers to the x-axis. Will refer to the y-axis if orientation is set to vertical. Must be of length 1.

end

Numeric value. The ending point of the wave on the coordinate system. By default refers to the x-axis. Will refer to the y-axis if orientation is set to vertical Must be of length 1.

size

Numeric value. The height or width of the wave. Orientation is set to horizontal by default, thus size will affect height by default. When orientation is set to vertical, size controls the width of the wave. Must be a positive numeric value. Must be of length 1.

type

String value. "sin" or "cos" for sine or cosine waves. sin is default. Must be of length 1.

orientation

String value. Default is horizontal which will draw the wave from left to right (x-axis) on the coordinate system. vertical will draw the wave from bottom to top (y-axis) on the coordinate system. Must be of length 1.

freq

Numeric value. Default is 3 cycles per second. This affects how many "peaks" are created in the wave. Must be a positive numeric value. Must be of length 1.

n_points

Numeric value. Default is 500. This determines how many points each half of the wave will have. This option can come in handy when using jitter options or other texture/illusion methods. Must be of length 1.

color

Optional String Value. A 6 digit hexadecimal webcolor code, or R colors() color string for the border color of the wave. Must be of length 1.

fill

Optional String Value. A 6 digit hexadecimal webcolor code, or R colors() color string for the fill color of the wave. Must be of length 1.

group_var

Logic value. TRUE or FALSE. Default is FALSE. If TRUE, Adds a group variable to the data frame. Useful for iterative work to make multiple waves in a single data frame.

dampen

Optional. A factor in which to dampen the wave (make "flatter"). Must be of length 1.

amplify

Optional. A factor in which to amplify the wave (make "sharper"). Must be of length 1.

Value

A Tibble

Examples

library(ggplot2)
wave_df <- wave_data(
  start = 0, end = 10,
  fill = "purple",
  color = "green"
)

wave_df |>
  ggplot(aes(x, y)) +
  theme_void() +
  geom_polygon(
    fill = wave_df$fill,
    color = wave_df$color,
    linewidth = 3
  ) +
  coord_equal()