====== MultiplyByEnergy ====== ### Multiplies a spectrum //G($\omega$)// by its energy, i.e. //Gnew($\omega$) = $\omega\times$G($\omega$)//. ### ===== Example ===== ### Take the spectrum defined in the file [[documentation:language_reference:objects:spectra:start|definitions.Quanty]] and multiply it by its energy. ### ==== Input ==== dofile("definitions.Quanty") GOmega = Spectra.MultiplyByEnergy(G) G.Print({{"file","Spectra.dat"}}) GOmega.Print({{"file","Spectra.MultiplyByEnergy.dat"}}) gnuplotScript = gnuplotHead .. [[ set output "Spectra.MultiplyByEnergy.ps" plot "Spectra.dat" using 1:(-$3 ) title 'T1' with lines ls 1,\ "Spectra.MultiplyByEnergy.dat" using 1:(-$3) title 'T1 * Energy' with lines ls 2 ]] file = io.open("Spectra.MultiplyByEnergy.gnuplot", "w") file:write(gnuplotScript) file:close() os.execute("gnuplot Spectra.MultiplyByEnergy.gnuplot") os.execute("convert -density 1024 Spectra.MultiplyByEnergy.ps -resize 1024 Spectra.MultiplyByEnergy.png") ==== Result ==== ### The resulting picture is: ### {{:documentation:language_reference:objects:spectra:functions:spectra.multiplybyenergy.png?nolink |}} ===== Available functions ===== {{indexmenu>.#1}}