Example of the diagrams used to determine the gas excitation mechanisms across the surface of each galaxy. Each point on the diagrams represents a spaxel. Top row from left to right: [NII] BPT diagram and [SII] BPT diagram of a late-type RDAGN galaxy example. The solid line represents the maximum starburst line from Kewley et al. (2001). The dashed line on the [NII] BPT diagram represents the Kauffmann et al. (2003) line, which separates pure SF galaxies from composite galaxies. The dotted line on the [SII] BPT diagram separates Seyfert-like excitation from LINER-like excitation (Kewley et al. 2006). Bottom row from left to right: WHAN diagram and final ionization classification map of RDAGN galaxy 8978−9101. The [NII] BPT was used to separate HII (brown) and composite (beige) excitation, the [SII] diagram was used to distinguish Seyfert-like excitation (green) from LINER-like excitation (light green), and the WHAN diagram was used to differentiate LIER-like excitation (dark green) from LINER-like excitation. The red ellipses represent, from the inside outward, 0.2 R/R_e, 0.6 R/R_e, 1 R/R_e.