Momocs (version 0.2-03)

tps.arr: Deformation "vector field" using Thin Plate Splines.

Description

tps.arr(ows) calculates deformations between two configurations and illustrate them using arrows.

Usage

tps.arr(fr, to, amp=1, palette = col.summer,
        arr.nb = 100, arr.levels = 100, arr.len = 0.1,
        arr.ang = 30, arr.lwd = 1, arr.col = "grey50",
        shp = TRUE, shp.col =  rep(NA, 2), shp.border=col.gallus(2),
        shp.lwd = c(2, 2), shp.lty = c(1, 1))

Arguments

fr

The reference $(x; y)$ coordinates.

to

The target $(x; y)$ coordinates.

amp

An amplification factor of differences between fr and to.

palette

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

arr.nb

A numeric. The number of arrows to calculate.

arr.levels

A numeric. The number of levels for the color of arrows.

arr.len

A numeric. The length of arrows.

arr.ang

A numeric. The angle for arrows' heads.

arr.lwd

A numeric. The lwd for drawing arrows.

arr.col

If palette is not used the color for arrwos.

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.

Value

• No returned value.

See Also

tpsgrid in shapes.

Examples

data(bot)
botF <- eFourier(bot)
x <- meanShapes(botF, "type", nb.pts=80)
fr <- x$beer
to <- x$whisky
tps.arr(fr, to, arr.nb=400, palette=col.sari, amp=3)