GSIF (version 0.5-3)

USDA.TT.im: Probability density for texture triangle

Description

Probability density for texture triangle (USDA system) based on global soil profile data (see ISRIC WoSIS).

Usage

data(USDA.TT.im)

Format

The USDA.TT.im data frame contains the following columns:

References

• Skaggs, T. H., Arya, L. M., Shouse, P. J., Mohanty, B. P., (2001) Estimating Particle-Size Distribution from Limited Soil Texture Data. Soil Science Society of America Journal 65 (4): 1038-1044.

See Also

FAO.SoilProfileCollection, soil.dom

Examples

## plot prior probabilities:
library(sp)
data(USDA.TT.im)
gridded(USDA.TT.im) <- ~s1+s2
spplot(USDA.TT.im["v"])

## Not run: library(soiltexture)
# ## convert textures by hand to sand, silt and clay:
# TEXMHT <- c("CL","C","SiL","SiL","missing")
# x <- TT2tri(TEXMHT)
# x
# ## End(Not run)