Learn R Programming

SAMCpack (version 0.1.1)

gdata: Dataset for SAMCrsa

Description

Simulated data list with response variable distributed with 'powered exponential' covariance matrix, with \(\phi=25, \tau=1, \kappa=1, \sigma=1\).

Usage

data(gdata)

Arguments

Format

A sample dataset with 1000 observations. It's save as an R's native list, and see the table for description of variables in the gdata list,

VARIABLE SIZE DESCRIPTION
coords \((1000\times 2)\) matrix 2D location for each observation
y length-\(1000\) vector response value

This is the default example data for SAMCrsa.

Details

Below is the code used to generate gdata:

require("geoR")
require("RandomFields")
DataNum=1000
gData=grf(DataNum,grid="irreg",DataNum,DataNum,xlims=c(0,100),ylims=c(0,100),nsim=1,mean=0,
          cov.mode="powered.exponential",cov.par=c(1,25),nugget=1,kappa=1)
gdata = list(y=gData$data+.5+rnorm(DataNum), X=rnorm(DataNum), coords=gData$coords)