def interp_kappa_nu(self, nu):
        return interp1d_fast_loglog(self.nu, self.kappa, nu)
Takes a style name, returns a font tag for it, like
dataset/ETHPy150Open hyperion-rt/hyperion/hyperion/dust/optical_properties.py/OpticalProperties.interp_kappa_nu--crossover with--dataset/ETHPy150Open rst2pdf/rst2pdf/rst2pdf/createpdf.py/RstToPdf.styleToFont