The regularity, or purity, of the gait includes the evenness and levelness of the stride. It can be measured through species richness, species evenness. It can also be used to visualize species richness and species evenness. People tend to like the oddness among the evenness. Species evenness quantifies how equal the abundances of the species are. He emphasized evenness of tone, a beautiful, song-like legato, and expressiveness. The controls can be used to optimize brightness, evenness of illumination, and contrast. According to Jarvis's model, lexical diversity includes variability, volume, evenness, rarity, dispersion and disparity. Virgil's Latin has been praised for its evenness, subtlety and dignity. These indices are a measure of evenness between samples. The strength of Collingwood under McHale lay in its evenness and adherence to team discipline. Residential segregation is typically measured by evenness and exposure. Other indices have been proposed by authors where formula 6 e.g. Hurlburt's evenness index. Shifting competition can alter the evenness and dominance of the plant community. Also, it is difficult to control the evenness of the finished surface.