Galaxy images (upper panels) and image cubes (lower panels) in our dataset after the preprocessing steps as explained in Section 2.2. Each row contains one sample galaxy in three stellar maps – metallicity, age and mass from left to right in (a) 2D and (b) 3D. The images are normalised in the range [0,1] and bright pixels correspond to high values. Note that in the stellar age maps, dark pixels correspond to young stars. The three dimensional plots have been created using the plotly python package.