sand_silt_clay: Plot a ternary diagram of sand-silt-clay grain-size...
In abarbour/hydrogeo: Tools for hydrogeology and poroelasticity

Description Usage Arguments Details Author(s) See Also

The hydraulic properties of sedimentary material are roughly dependent on the proportions of grain size due to sand, silt, and clay; these are common categorical distinctions found in drillers logs.

sand_silt_clay(shepard.diagram = TRUE, silt.lims = c(-0.01, 1.01),
  add.frame = FALSE, ...)

shepard_plot(init = FALSE)

`shepard.diagram`	logical; should Shepards' (1954) classification system be overlain?
`silt.lims`	numeric; vector of length two controlling the horizontal (silt) axis limits.
`add.frame`	logical; should a box be drawn around it?
`...`	additional parameters (unused)
`init`	logical; forces device instantiation.

A more detailed classification system for soils is used by the USDA; however, Shepard's diagram is adquate for a sand-silt-clay model, and shepard_plot adds them to the current device. This function is intended for a ternary diagram normalized to percent particle size so that hydraulic parameters may be estimated from drillers logs.

Andrew J. Barbour <andy.barbour@gmail.com>

xyz2ternary, hydrogeo.p

abarbour/hydrogeo documentation built on May 10, 2019, 4:06 a.m.