extractClass: Extract class

In shazhe/mvst0: Multi-variate ST modelling on globe

Description

This function is used to extract either the observations or the processes from a list of vertices (i.e. a block_list)

Usage

extractClass(L, Cl)

## S4 method for signature 'list,character'
extractClass(L, Cl)

Arguments

L	an object of class block_list.
Cl	A string identifying which object to extract; can either be process or Obs.

Value

Object of class Obs or class process.

Examples

## Not run: 
require(Matrix)
data(icesat)
data(surf_fe)

## First create observation object
icesat_obs <- Obs(df=icesat,
                 abs_lim = 5,
                 avr_method = "median",
                 box_size=100,
                 name="icesat")

## Now create GMRF defined over some FE basis
Mesh <- initFEbasis(p=surf_fe$p,
                    t=surf_fe$t,
                    M=surf_fe$M,
                    K=surf_fe$K)

mu <- matrix(0,nrow(Mesh),1)
Q <- sparseMatrix(i=1:nrow(surf_fe$p), j = 1:nrow(surf_fe$p), x = 1)

my_GMRF <- GMRF(mu = mu, Q = Q,name="SURF",t_axis = 0:6)
SURF <-GMRF_basis(G = my_GMRF, Basis = Mesh)

L1 <- link(SURF,icesat_obs)
e <- link_list(list(L1))
v <- block_list(list(O = icesat_obs, G = SURF))
G <- new("Graph",e=e,v=v)
G_reduced <- compress(G)

retrieved_proc_from_list <- extractClass(v,"process")

## End(Not run)

shazhe/mvst0 documentation built on May 29, 2019, 9:20 p.m.