function PlotSpectra(lambda,spectra,T)

% PlotSpectra(lambda, spectra)
% PlotSpectra(lambda, spectra, Title)
% lambda - wavelength vector

plot(lambda, spectra, 'r');
axis([350 2500 -0.5 1.5]);
xlabel('wavelength /[nm]');
ylabel('relative reflectance');
if nargin == 3
   title(T);
end

