check_tbl_na            check for NA values in a tibble
cor_test                (partial) correlation test
discretize_vector       discretization
dummy_tbl               transforming a category tibble into the
                        corresponding dummy variable tibble
dummy_vec               transforming a categorical variable into dummy
                        variables
formula_varname         get variable names in a formula and data
fuzzyoverlay            spatial fuzzy overlay
generate_subsets        generate subsets of a set
geodetector_q           only geodetector q-value
hclustgeo_disc          hierarchical clustering with spatial soft
                        constraints
inverse_distance_swm    construct inverse distance weight
loess_optnum            determine optimal spatial data discretization
                        for individual variables
moran_test              global spatial autocorrelation test
normalize_vector        normalization
rm_lineartrend          remove variable linear trend based on covariate
sf_coordinates          extract locations
sf_distance_matrix      generates distance matrix
sf_geometry_name        sf object geometry column name
sf_geometry_type        sf object geometry type
sf_gk_proj_cgcs2000     generates cgcs2000 Gauss-Kruger projection epsg
                        coding character
sf_utm_proj_wgs84       generates wgs84 utm projection epsg coding
                        character
sf_voronoi_diagram      generates voronoi diagram
spade_psd               only spade power of spatial determinant
spdep_contiguity_swm    constructs spatial weight matrices based on
                        contiguity
spdep_distance_swm      constructs spatial weight matrices based on
                        distance
spdep_lmtest            spatial linear models selection
spdep_nb                construct neighbours list
spdep_skater            spatial c(k)luster analysis by tree edge
                        removal
spvar                   spatial variance
ssh_test                spatial stratified heterogeneity test
standardize_vector      standardization
tbl_all2int             convert discrete variables in a tibble to
                        integers
tbl_xyz2mat             convert xyz tbl to matrix
