Momocs (version 1.4.1)

tps_iso: Deformation isolines using Thin Plate Splines.

Description

tps_iso calculates deformations between two configurations and map them with or without isolines.

Usage

tps_iso(
  fr,
  to,
  amp = 1,
  grid = FALSE,
  over = 1.2,
  palette = col_spring,
  iso.nb = 1000,
  iso.levels = 12,
  cont = TRUE,
  cont.col = "black",
  poly = TRUE,
  shp = TRUE,
  shp.border = col_qual(2),
  shp.lwd = c(2, 2),
  shp.lty = c(1, 1),
  legend = TRUE,
  legend.text,
  ...
)

Value

No returned value

Arguments

fr

The reference $(x;y)$ coordinates

to

The target $(x;y)$ coordinates

amp

An amplification factor of differences between fr and to

grid

whether to calculate and plot changes across the graphical window TRUE or just within the starting shape (FALSE)

over

A numeric that indicates how much the thin plate splines extends over the shapes

palette

A color palette such those included in Momocs or produced with colorRampPalette

iso.nb

A numeric. The number of points to use for the calculation of deformation

iso.levels

numeric. The number of levels for mapping the deformations

cont

logical. Whether to draw contour lines

cont.col

A color for drawing the contour lines

poly

whether to draw polygons (for outlines) or points (for landmarks)

shp

logical. Whether to draw 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

See Also

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

Examples

botF <- efourier(bot)
x <- MSHAPES(botF, 'type', nb.pts=80)$shp
fr <- x$beer
to <- x$whisky
tps_iso(fr, to, iso.nb=200, amp=3)
tps_iso(fr, to, iso.nb=200, amp=3, grid=TRUE)