Functions for Soil Texture Plot, Classification and Transformation

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Documentation for package ‘soiltexture’ version 1.5.1

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
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soiltexture-package	Functions for Soil Texture Plot, Classification and Transformation
soiltexture	Functions for Soil Texture Plot, Classification and Transformation
soiltextureInfo	Display and / or export system and package version information
soiltexture_gui	Text-based menu for plotting and classifying soil texture data
TT.add	Function to add a new default package parameters.
TT.auto.set	Internal. Retrieve and set default values for parameters (par() or not), when NULL.
TT.axis.arrows	Internal. Plot the axis' arrows of a texture triangle plot.
TT.baseplot	Internal. Create an empty plot scene for a texture triangle.
TT.blr.ps.lim	Internal. Create a tabular version of clay silt sand particle size limits.
TT.blr.tx.check	Internal. Check the consistency between blr.tx and css.names.
TT.check.ps.lim	Internal. Check the consistency between 'base.ps.lim' and 'dat.ps.lim'.
TT.chemometrics.alr	Compute the additive log-ratio transformation of compositional data.
TT.classes	Plot the texture classes polygons in a texture triangle plot.
TT.classes.tbl	Returns the table of classes of a texture classification system.
TT.col2hsv	Internal. Convert any colors to hsv.
TT.contour	Wrapper for the contour() function adapted to texture triangles.
TT.css2xy	Internal. Converts texture data (3 classes) into x-y coordinates.
TT.data.test	Test the validity of some soil texture data table (3 particle size classes).
TT.data.test.X	Test the validity of some soil texture data table (X particle size classes).
TT.dataset	Genetates a virtual cross correlated clay silt sand + Z dataset.
TT.deg2rad	Internal. Function to convert angle in degree to angle in radian.
TT.dia2phi	Internal. Convert a soil particle diameter dia [micro-meters] into phi = -log2(dia/1000)
TT.DJ.col	Internal. A function to obtaine a weight average 'mix' of different colors!
TT.edges	Internal. Plot the edges (bare axis) of a soil texture triangle.
TT.env	TT env
TT.gen.op.set	Internal. Retrieve and set default values from options.
TT.geo.get	Internal. Retrieve and return the geometrical parameters from a list of parameter values (NULL or not).
TT.geo.set	Internal. Takes "geo" values and assign them individually in the parent function.
TT.get	Function to retrieve / get the default package parameters.
TT.grid	Plot a grid at regular texture intervals inside an existing soil texture triangle.
TT.ifelse	Internal. Flexible version of ifelse.
TT.image	Wrapper for the contour() function adapted to texture triangles.
TT.iwd	Inverse weighted distance interpolation on a grid.
TT.kde2d	Calculated the 2D probabilty density on an x-y grid.
TT.lines	Internal. Used to plot line elements of a texture plot axis, ticks, arrows, etc.
TT.locator	Interactive (mouse clic) retrieval the CLAY SILT SAND coordinate of points on a texture triangle.
TT.mahalanobis	Calculates the Mahalanobis distance between clay silt and sand.
TT.normalise.sum	Normalises the sum of the 3 particle size classes.
TT.normalise.sum.X	Normalises the sum of the X particle size classes.
TT.par.op.set	Internal. Retrieve and set default values from options with default in "par()".
TT.phi2dia	Internal. Convert a soil particle phi value into diameter dia [micro-meters].
TT.plot	Plot soil texture triangles / diagrams.
TT.points	Plot a soil texture data table as points on an existing texture plot.
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).
TT.polygon.centroids	Internal. Determines the centroid of 1 polygon (in x-y coordinates).
TT.set	Function to change / set the default package parameters.
TT.str	Internal. Stretch or reshape the range of value of some data set.
TT.switch	Internal. Used in the plot axis drawings.
TT.text	Plot text labels for each values of a soil texture data table on an existing texture plot.
TT.text.transf	Log-linear transformation of a soil texture data table between 2 particle size systems (3 classes).
TT.text.transf.X	Log-linear transformation of a soil texture data table between 2 particle size systems (X classes).
TT.ticks	Internal. Plot the axis' ticks of a texture triangle plot.
TT.ticks.lab	Internal. Plot the axis ticks' labels of a texture triangle plot.
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.xy.grid	Internal. Create a grid in the x-y coordinate system.
TT.xy2css	Internal. Convert point-data duplets (2 variables, x-y coordinaes) in Clay silta and sand coordinates.