  Chimera states in coupled oscillator systems present both spatially coherent
and incoherent domains. The number and size of these domains depend on many
factors like the system parameters and initial conditions. Systematic
investigations of these dependences require a quantification of the degree of
coherence present in a given snapshot spatial pattern. We propose the use of a
local order parameter magnitude combined with the counting of the corresponding
plateaus so as to provide such quantification. We use this technique in
non-locally coupled lattices of chaotic logistic maps and chaotic R\"ossler
systems to investigate the dependence of the degree of coherence on the
coupling strength.
