# The Second Dimension of Spatial Association

## Documentation for package ‘SecDim’ version 3.2

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

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)