simu_multiscale {mgwrsar}

Estimation of linear and local linear model with spatial autocorrelation model (mgwrsar).

Description

The simu_multiscale function is designed for simulating a spatially varying coefficient DGP (Data Generating Process) based on formulations proposed by Fotheringam et al. (2017), Gao et al. (2021), or Geniaux (2024).

Usage

simu_multiscale(n=1000,myseed=1,type='GG2024',b0_constant=FALSE)

Arguments

n

An integer number of observations.

myseed

An integer seed used for the simulation.

type

Type of DGP used 'FT2017', 'Gao2021' or 'GG2024', default 'GG2024'.

b0_constant

A boolean parameter indicating whether the intercept term should be spatially varying (TRUE) or not (FALSE).

Value

A named list with simulated data ('mydata') and coords ('coords')

Examples

 library(mgwrsar)
 library(ggplot2)
 library(gridExtra)
 library(grid)
 simu=simu_multiscale(1000)
 mydata=simu$mydata
 coords=simu$coords
 p1<-ggplot(mydata,aes(x,y,col=Beta1))+geom_point() +scale_color_viridis_c()
 p2<-ggplot(mydata,aes(x,y,col=Beta2))+geom_point() +scale_color_viridis_c()
 p3<-ggplot(mydata,aes(x,y,col=Beta3))+geom_point() +scale_color_viridis_c()
 p4<-ggplot(mydata,aes(x,y,col=Beta4))+geom_point() +scale_color_viridis_c()
 grid.arrange(p1,p2,p3,p4,nrow=2,ncol=2, top = textGrob("DGP Geniaux (2024)"
 ,gp=gpar(fontsize=20,font=3)))