R: Functions for Soil Texture Plot, Classification and Transformation

# Functions for Soil Texture Plot, Classification and Transformation

## Documentation for package ‘soiltexture’ version 1.5.3

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS

## Help Pages

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.baseplot | Internal. Create an empty plot scene for a texture triangle.
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.contour | Wrapper for the contour() function adapted to texture triangles.
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.dia2phi | Convert a soil particle diameter dia [micro-meters] into phi = -log2(dia/1000)
TT.geo.get | Retrieve and return the geometrical parameters from a list of parameter values (NULL or not).
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.image | Wrapper for the image() 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.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.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.set | Function to change / set the default package parameters.
TT.str | Stretch or reshape the range of value of some data set.
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.vertices.plot | Plot the vertices of a texture classification system.
TT.vertices.tbl | Returns the table of vertices of a texture classification system.