Description Usage Arguments Value Examples
Retrieves the incidence matrix C
from the observation model z = Cx + e.
1 2 3 4 5 6 7 |
.Object |
object of class |
Object of class Matrix
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | ## 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)
C_L1 <- getC(L1)
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)
C_Graph <- getC(G_reduced)
## End(Not run)
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