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soiltexture (version 1.5.1)

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

986

Version

1.5.1

License

AGPL (>= 3)

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Repository

https://github.com/julienmoeys/soiltexture

Maintainer

Last Published

September 20th, 2018

Functions in soiltexture (1.5.1)

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

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

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

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

Calculates the Mahalanobis distance between clay silt and sand.

TT.normalise.sum

Normalises the sum of the 3 particle size classes.

Internal. Flexible version of ifelse.

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

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

Function to retrieve / get the default package parameters.

Returns the table of classes of a texture classification system.

Function to add a new default package parameters.

Inverse weighted distance interpolation on a grid.

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

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

TT.points.in.classes

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

TT.polygon.area

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

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

Internal. Convert any colors to hsv.

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

TT.polygon.centroids

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

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

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

Internal. Retrieve and set default values from options.

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

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

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

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

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

Internal. Used in the plot axis drawings.

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

Plot soil texture triangles / diagrams.

TT.normalise.sum.X

Normalises the sum of the X particle size classes.

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

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

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

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

Function to change / set the default package parameters.

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

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

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

soiltexture_gui

Text-based menu for plotting and classifying soil texture data

TT.vertices.plot

Internal. Plot the vertices of a texture classification system.

TT.vertices.tbl

Returns the table of vertices of a texture classification system.

TT.text.transf.X

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

soiltexture-package

tools:::Rd_package_title("soiltexture")

soiltextureInfo

Display and / or export system and package version information

TT.blr.tx.check

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

Plot the texture classes polygons in a texture triangle plot.

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

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

TT.check.ps.lim

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

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

TT.chemometrics.alr

Compute the additive log-ratio transformation of compositional data.

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

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