Arguments
weights
matrix, containing MCMC-output the of
posterior estimates of weights.
nei,
matrix, locations of weights in precision
matrix.
nx,
scalar, number of pixels in x-direction.
ny,
scalar, number of pixels in y-direction.
coord,
matrix, coordinates of pixels.
thresh,
scalar, defining the threshold to which
the median of the weights smaller than this threshold
should be plotted.
...,
graphical parameters for image can
also be passed on as arguments to this function.