grids |
Spatial grid dataset. |
gsdvar |
Generating second-dimension variables for a spatial variable |
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) |