| 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. |