ade4 (version 1.01)

granulo: Granulometric Curves

Description

This data set gives the repartition in diameter classes of deposit samples.

Usage

data(granulo)

format

granulo is a list of 2 components.

1. tab

{contains the 49 deposit samples, 9 diameter classes, weight of grains by size class} born{contains the boundaries of the diameter classes}

source

Gaschignard-Fossati, O. (1986) R�partition spatiale des macroinvert�br�s benthiques d'un bras vif du Rh�ne. R�le des crues et dynamique saisonni"re. Th"se de doctorat, Universit� Lyon 1.

Examples

data(granulo)
w <- t(apply(granulo$tab, 1, function (x) x / sum(x)))
w <- data.frame(w)
wtr <- data.frame(t(w))
wmoy <- data.frame(matrix(apply(wtr, 1, mean), 1))
d1 <- dudi.pca(w, scal = FALSE, scan = FALSE)
wmoy <- suprow.default(d1, wmoy)
s.arrow(d1$c1, clab = 1.5)
s.distri(d1$c1, wtr, cstar = 0.33, cell = 0, 
    axesell = FALSE, add.p = TRUE, clab = 0.75)
s.label(wmoy, cpoi = 5, clab = 0, add.p = TRUE)