edgeroiCovariates: Suite of selected environmental covariates for the Edgeroi...

In ithir: Functions and Algorithms Specific to Pedometrics

Description

RasterLayers of selected environmental covariates with near complete coverage of the Edgeroi district in NSW, Australia.

Usage

data(edgeroiCovariates)

Format

edgeroiCovariates contains 5 RasterLayers of selected environmental covariates for the near entire Edgeroi district NSW, Australia. The grids have a pixel resolution of 90m x 90m. It contains the following rasters:

elevation

numeric; topographic variable of bare earth ground elevation. Derived from digital elevation model

twi

numeric; topographic wetness index. Secondary derivative of the digital elevation model

radK

numeric; gamma radiometric data

landsat_b3

numeric; band 3 reflectance of the Landsat 7 satelite

landsat_b4

numeric; band 4 reflectance of the Landsat 7 satelite

Details

The Edgeroi District, NSW is an intensive cropping area upon the fertile alluvial Namoi River plain. The District has been the subject of many soil invetigations, namely McGarry et al. (1989) whom describe an extensive soil data set collected from the area. More recently, digital soil mapping studies of the area have been conducted, for example, Malone et al. (2009).

Note

The raw spatial data that contributed to the creation of edgeroiCovariates were sourced from publically accessable repositories hosted by various Australian Government and international agencies including CSIRO (for the DEM), Geosciences Australia (for the radiometric data) and NASA (for the Landsat 7 ETM+ data). The projection for each of the RasterLayers is WGS 84 Zone 55.

References

• Malone, B.P., McBratney, A.B., Minasny, B. (2009) Mapping continuous depth functions of soil carbon storage and available water capacity. Geoderma 154, 138-152.

• McGarry, D., Ward, W.T., McBratney, A.B. (1989) Soil Studies in the Lower Namoi Valley: Methods and Data. The Edgeroi Data Set. (2 vols) (CSIRO Division of Soils: Adelaide).

Examples

library(ithir)
library(raster)

data(edgeroiCovariates)

#plot 1 of the \code{RasterLayers}
plot(elevation)

ithir documentation built on May 2, 2019, 4:49 p.m.