Visualize a single isoband — plot

This function visualizes a single isoband calculated from a matrix. It is mainly useful for debugging and visualizing the isobanding algorithm. See isobands() for more examples.

plot_iso(
  m,
  vlo,
  vhi,
  fill_lo = "gray95",
  fill_mid = "gray50",
  fill_hi = "black",
  fill_band = "cornsilk",
  col_lo = "black",
  col_hi = "black",
  newpage = TRUE
)

Arguments

m: input matrix
vlo: lower cutoff for isobanding
vhi: higher cutoff for isobanding
fill_lo: fill color for points below the lower cutoff
fill_mid: fill color for points between the two cutoffs
fill_hi: fill color for points above the higher cutoff
fill_band: fill color for the isoband
col_lo: line color for lower cutoff
col_hi: line color for higher cutoff
newpage: boolean, indicating whether grid.newpage() should be called or not

Examples

m <- matrix(c(0, 0, 0, 0, 0, 0,
              0, 2, 2, 2, 2, 0,
              0, 2, 0, 0, 2, 0,
              0, 2, 0, 0, 2, 0,
              0, 2, 2, 2, 2, 0,
              0, 0, 0, 0, 0, 0), 6, 6, byrow = TRUE)

plot_iso(m, 0.5, 1.5)