ANN+Jackknife dataset

dataset = first column: Number ID; second column: North UTM (m); third column: Este UTM (m); fourth column: pH; fifth column: Ca; sixth column: Mg; seventh column: P; and eighth column K. jack_40.m: Example of the JACK-1T script for the case where the sample was randomly and uniformly reduced to 40%. redSample.m: Script that randomly and uniformly reduces the sample size to a desired percentage.