tps_grid: Deformation grids using Thin Plate Splines

In Momocs: Morphometrics using R

Deformation grids using Thin Plate Splines

Description

tps_grid calculates and plots deformation grids between two configurations.

Usage

tps_grid(
  fr,
  to,
  amp = 1,
  over = 1.2,
  grid.size = 15,
  grid.col = "grey80",
  poly = TRUE,
  shp = TRUE,
  shp.col = rep(NA, 2),
  shp.border = col_qual(2),
  shp.lwd = c(1, 1),
  shp.lty = c(1, 1),
  legend = TRUE,
  legend.text,
  ...
)

Arguments

fr	the reference (x; y) coordinates
to	the target (x; y) coordinates
amp	an amplification factor of differences between fr and to
over	numeric that indicates how much the thin plate splines extends over the shapes
grid.size	numeric to specify the number of grid cells on the longer axis on the outlines
grid.col	color for drawing the grid
poly	whether to draw polygons (for outlines) or points (for landmarks)
shp	logical. Whether to draw shapes
shp.col	Two colors for filling the shapes
shp.border	Two colors for drawing the borders
shp.lwd	Two lwd for drawing shapes
shp.lty	Two lty fro drawing the shapes
legend	logical whether to plot a legend
legend.text	some text for the legend
...	additional arguments to feed coo_draw

Value

Nothing

See Also

Other thin plate splines: tps2d(), tps_arr(), tps_iso(), tps_raw()

Examples

botF <- efourier(bot)
x <- MSHAPES(botF, 'type', nb.pts=80)$shp
fr <- x$beer
to <- x$whisky
tps_grid(fr, to, amp=3, grid.size=10)

Momocs documentation built on Nov. 13, 2023, 5:07 p.m.