obs | Spatial datasets of trace elements. |
rmvoutlier | Removing outliers. |
sample_vars_fda | Spatial datasets of the first dimension variables of trace elements. |
sample_vars_sda | Spatial datasets of the second dimension variables of trace elements. |
sdapredvars | Preparing explanatory variables data for SDA-based prediction |
selectvarlm | Selecting variables using linear regression |
selectvarsda | Selecting variables for the SDA model |
vif | Fast calculation of the variance inflation factor (VIF) |