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soiltexture (version 1.4.6)

Functions for Soil Texture Plot, Classification and Transformation

Description

"The Soil Texture Wizard" is a set of R functions designed to produce texture triangles (also called texture plots, texture diagrams, texture ternary plots), classify and transform soil textures data. These functions virtually allows to plot any soil texture triangle (classification) into any triangle geometry (isosceles, right-angled triangles, etc.). This set of function is expected to be useful to people using soil textures data from different soil texture classification or different particle size systems. Many (> 15) texture triangles from all around the world are predefined in the package. A simple text based graphical user interface is provided: soiltexture_gui().

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Install

install.packages('soiltexture')

Monthly Downloads

869

Version

1.4.6

License

AGPL (>= 3)

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Repository

https://github.com/julienmoeys/soiltexture

Maintainer

Julien MOEYS

Last Published

May 1st, 2018

Functions in soiltexture (1.4.6)

Internal. Plot the edges (bare axis) of a soil texture triangle.

Internal. Flexible version of ifelse.

Wrapper for the contour() function adapted to texture triangles.

Test the validity of some soil texture data table (X particle size classes).

Internal. Plot the axis ticks' labels of a texture triangle plot.

Internal. Takes "geo" values and assign them individually in the parent function.

Calculates the Mahalanobis distance between clay silt and sand.

Internal. Retrieve and return the geometrical parameters from a list of parameter values (NULL or not).

Internal. Plot the axis' ticks of a texture triangle plot.

TT.normalise.sum

Normalises the sum of the 3 particle size classes.

soiltextureInfo

Display and / or export system and package version information

soiltexture-package

Functions for Soil Texture Plot, Classification and Transformation

Log-linear transformation of a soil texture data table between 2 particle size systems (3 classes).

TT.normalise.sum.X

Normalises the sum of the X particle size classes.

Internal. Create a grid in the x-y coordinate system.

Internal. Retrieve and set default values from options with default in "par()".

Internal. Convert point-data duplets (2 variables, x-y coordinaes) in Clay silta and sand coordinates.

TT.text.transf.X

Log-linear transformation of a soil texture data table between 2 particle size systems (X classes).

Function to retrieve / get the default package parameters.

Plot a grid at regular texture intervals inside an existing soil texture triangle.

Internal. Retrieve and set default values from options.

Plot a soil texture data table as points on an existing texture plot.

Internal. Convert a soil particle phi value into diameter dia [micro-meters].

soiltexture_gui

Text-based menu for plotting and classifying soil texture data

Function to change / set the default package parameters.

Internal. Stretch or reshape the range of value of some data set.

Internal. Used to plot line elements of a texture plot axis, ticks, arrows, etc.

Calculated the 2D probabilty density on an x-y grid.

Inverse weighted distance interpolation on a grid.

TT.points.in.classes

Classify a table of soil texture data according to a soil texture triangle.

Interactive (mouse clic) retrieval the CLAY SILT SAND coordinate of points on a texture triangle.

Plot text labels for each values of a soil texture data table on an existing texture plot.

Internal. Used in the plot axis drawings.

TT.vertices.plot

Internal. Plot the vertices of a texture classification system.

TT.polygon.centroids

Internal. Determines the centroid of 1 polygon (in x-y coordinates).

TT.polygon.area

Internal. Determines the area of 1 polygon (in x-y coordinates).

Plot soil texture triangles / diagrams.

TT.vertices.tbl

Returns the table of vertices of a texture classification system.

Internal. A function to obtaine a weight average 'mix' of different colors!

Internal. Create an empty plot scene for a texture triangle.

Internal. Create a tabular version of clay silt sand particle size limits.

TT.check.ps.lim

Internal. Check the consistency between 'base.ps.lim' and 'dat.ps.lim'.

Internal. Plot the axis' arrows of a texture triangle plot.

TT.chemometrics.alr

Compute the additive log-ratio transformation of compositional data.

Internal. Retrieve and set default values for parameters (par() or not), when NULL.

Function to add a new default package parameters.

TT.blr.tx.check

Internal. Check the consistency between blr.tx and css.names.

Plot the texture classes polygons in a texture triangle plot.

Returns the table of classes of a texture classification system.

Genetates a virtual cross correlated clay silt sand + Z dataset.

Internal. Convert any colors to hsv.

Internal. Function to convert angle in degree to angle in radian.

Internal. Convert a soil particle diameter dia [micro-meters] into phi = -log2(dia/1000)

Wrapper for the contour() function adapted to texture triangles.

Test the validity of some soil texture data table (3 particle size classes).

Internal. Converts texture data (3 classes) into x-y coordinates.