Robust Geographical Detector & Robust Interaction Detector(RGD & RID)

Load data and package

library(gdverse)

data("ndvi")

names(ndvi)
## [1] "NDVIchange"    "Climatezone"   "Mining"        "Tempchange"   
## [5] "Precipitation" "GDP"           "Popdensity"

Run RGD

ndvi_rgd = rgd(NDVIchange ~ ., data = ndvi,
               discvar = names(dplyr::select(ndvi,-c(NDVIchange,Climatezone,Mining))),
               discnum = 3:8, cores = 12)
ndvi_rgd
## ***      Robust Geographical Detector    
## 
## |   variable    | Q-statistic | P-value  |
## |:-------------:|:-----------:|:--------:|
## | Precipitation |  0.8883955  | 4.77e-10 |
## |  Climatezone  |  0.8218335  | 7.34e-10 |
## |  Tempchange   |  0.3722571  | 3.22e-10 |
## |  Popdensity   |  0.2193538  | 9.31e-10 |
## |    Mining     |  0.1411154  | 6.73e-10 |
## |      GDP      |  0.1406153  | 4.86e-10 |
plot(ndvi_rgd)

Run RID

RID allows you to obtain the interactions of all possible combinations of variables. By default, Spatial Intersection are used to generate a new spatial partition of the interaction variables.

ndvi_rid = rid(NDVIchange ~ ., data = ndvi,
               discvar = names(dplyr::select(ndvi,-c(NDVIchange,Climatezone,Mining))),
               discnum = 8, cores = 12)
ndvi_rid
## ***       Robust Interaction Detector      
## 
## |   variable1   |   variable2   | Interaction  |
## |:-------------:|:-------------:|:------------:|
## |  Tempchange   | Precipitation | Enhance, bi- |
## |  Tempchange   |      GDP      | Enhance, bi- |
## |  Tempchange   |  Popdensity   | Enhance, bi- |
## |  Tempchange   |  Climatezone  | Enhance, bi- |
## |  Tempchange   |    Mining     | Enhance, bi- |
## | Precipitation |      GDP      | Enhance, bi- |
## | Precipitation |  Popdensity   | Enhance, bi- |
## | Precipitation |  Climatezone  | Enhance, bi- |
## | Precipitation |    Mining     | Enhance, bi- |
## |      GDP      |  Popdensity   | Enhance, bi- |
## |      GDP      |  Climatezone  | Enhance, bi- |
## |      GDP      |    Mining     | Enhance, bi- |
## |  Popdensity   |  Climatezone  | Enhance, bi- |
## |  Popdensity   |    Mining     | Enhance, bi- |
## |  Climatezone  |    Mining     | Enhance, bi- |
plot(ndvi_rid)