[Kartiky14]

Well the standard definition of elemental radiations seen as spectral lines is, a plot of intensities  of constituent parts of radiation emitted or absorbed by a substance against their wavelength,frequencies and wave numbers in the increasing order.Does that take a form of a graph or something? If yes then how? If no then what it is? (Examples with Visible spectrum into consideration will certainly be appreciated )

[Arkcon]

You're going to have to give an example of some sort ... its hard to understand what you're really asking.

[jpost]

I'm not exactly sure what you're asking in your question. Are you asking how a spectrum is plotted in UV/Vis spectroscopy?