rysgran (version 1.1)

class.percent: Weight Percentages of Textural Classes

Description

Calculates the percentage of weight retained on each sieve and its corresponding textural class

Usage

class.percent(tab, mode = "both", 
    empty.col = FALSE, lang = "en-US")

Arguments

tab

a data matrix with grain size samples

mode

shape of textural classes matrix. mode="total" shows grouped classes of gravel, sand, silt and clay. mode="classes" shows the subclasses like fine sand, coarse silt and medium clay. mode="both" shows both the grouped

empty.col

logical. If TRUE empty columns (with zero percent) are displayed. Default is FALSE

lang

language . May be english ("en-US", "en-GR", "eng", "e"), or portuguese ("pt-BR", "pt-PT", "port", "p"). The default is "en-US"

Value

• An array of variable dimension, depending on the chosen arguments, with the relative percentages of textural classes for each sample. This matrix should be used in ternary diagrams like Shepard and Pejrup by rysgran.ternary function, available in this package

Details

The matrix of particle size used in data entry must contain the first line of phi classes (logarithmic scale), each following line should contain the weights of a sample. For further details on the structure of the input table see data example camargo2001 included in this package

See Also

rysgran.ternary , gran.stats

Examples

#Example
#testing the differents modes
library(rysgran)
data(camargo2001)
tab<-camargo2001
class.percent(tab, mode="total", empty.col=FALSE, lang="en-US")
class.percent(tab, mode="classes", empty.col=FALSE, lang="en-US")
class.percent(tab, mode="both", empty.col=FALSE, lang="en-US")