calcCoordsBorders: Coordinates of a sourrounding rectangle in direction of a...

Description Usage Arguments Value Author(s) Examples

View source: R/repgrid-plots.r

Description

An arbitrary numeric vector in 2D is to be extented so it will end on the borders of a sourrounding rectangle of a given size. Currently the vector is supposed to start in the origin c(0,0).

Usage

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calcCoordsBorders(x, y, xmax = 1, ymax = 1, cx = 0, cy = 0)

Arguments

x

numeric vector of x coordinates x coordinates.

y

numeric vector of y coordinates x coordinates.

xmax

maximal x value for sourrounding rectangle (default is 1).

ymax

maximal y value for sourrounding rectangle (default is 1).

cx

center of retangle in x direction (not yet supported).

cy

center of retangle in x direction (not yet supported).

Value

a dataframe containing the x and y coordinates for the extended vectors.

Author(s)

Mark Heckmann

Examples

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## Not run: 
  calcCoordsBorders(1:10, 10:1)

  x <- c(-100:0, 0:100, 100:0, 0:-100)/10
  y <- c(0:100, 100:0, -(0:100), -(100:0))/10
  xy1 <- calcCoordsBorders(x, y)
  xy2 <- calcCoordsBorders(x, y, xm=1.2, ym=1.2)
  plot(xy2[,1], xy2[,2], type="n")
  segments(xy1[,1],xy1[,2],xy2[,1], xy2[,2])

## End(Not run)

markheckmann/OpenRepGrid documentation built on April 30, 2021, 2:33 a.m.