A Contour 2D plot can be created from any image band. Drag and drop the Original data onto the plot area in order to create the Contour 2D. Also, scores (T) from a PCA or PLS model can be used for creating the plot.

The Contour 2D plot can be automatically updated from the Spectral plot in the cases it has been created from the original data. Selecting pixels in the Contour 2D will make a line appear in the Spectral plot that can be used for selecting the viewed wavelength or band.