Data and script for red coloration of Phrynocephalus guinanensis

This dataset was used for the study titled "Pterin-based color predicts the outcome of intrasexual competition for males in Guinan toad-headed lizard", which include fours parts:(1) The spectral data were obtained using a Jaz optic spectrophotometer on the ventrolateral region of lizards.(2) The sand substrate reflection and irradiance data were measured in the study site.(3) Morphological traits were measured according to the standard methods on lizards.(4) A R-script for data analysis.