  We analyse the Ising Kondo lattice model on a pyrochlore structure in order
to study the anomalous Hall effect due to non-coplanar magnetism. We focus on
the frustration-induced spatial inhomogeneity of different magnetic
low-temperature regimes, between which one can efficiently tune using an
external magnetic field. We incorporate non-magnetic scattering on a
phenomenological level so that we can distinguish between the effects of
short-range correlations and short-range coherence. We obtain a Hall
conductivity (\sigma_H) as function of field strength and direction which
compares well to the experimental data of Pr2Ir2O7. In particular, we show that
the observed peak in \sigma_H for H||[111] signals the crossover from
zero-field spin ice to Kagome ice.
