plottarget3d function

3D plot of a two-dimensional MCMC target, or any function

Utility function for the package EntropyMCMC, to visualize a 2-dimensional target of a MCMC algorithm, mostly for testing purpose. This uses the function persp from package graphics.

plottarget3d(zft, l, r, ms, theta, phi, ...)

Arguments

• zft: a function, typically a 2-dimensional target of a MCMC.

• l, r, ms: mesh boundaries and size.

• theta, phi: angles defining the viewing direction. theta

  gives the azimuthal direction and phi the colatitude.

• ...: additional graphical parameters.

Returns

Returns a 3D plot on a mesh of size (l, r, ms).

Author(s)

Didier Chauveau.