Add histogram in legend

app.py

@@ -541,17 +541,19 @@ if "result" in st.session_state:
                     raise ValueError(f"Unknown satellite: {satellite}")
 
                 if veg_index=='NDVI':
-                    bins=[0, 0.1, 0.2, 0.3, 0.4, 0.5]
+                    bins=[-1, 0, 0.1, 0.2, 0.3, 0.4, 0.5, 1]
                     histogram, bin_edges = get_histogram(mosaic.select(veg_index), ee_geometry, bins)
                     print(histogram, bin_edges, bins)
+                    total_pix = np.sum(histogram)
+                    formatted_histogram = [f"{h/total_pix:.2f}" for h in histogram]
                     m.add_legend(title="NDVI Class/Value",
-                                legend_dict={'<0:Waterbody': '#0000FF',
-                                             '0-0.1: Open': '#FF0000',
-                                             '0.1-0.2: Highly Degraded':'#FFFF00',
-                                             '0.2-0.3: Degraded': '#FFA500',
-                                             '0.3-0.4: Moderately Degraded': '#00FE00',
-                                             '0.4-0.5: Dense': '#00A400',
-                                             '>0.5: Very Dense': '#006D00',
+                                legend_dict={f'<0:Waterbody {formatted_histogram[0]:.2f}%': '#0000FF',
+                                             f'0-0.1: Open {formatted_histogram[1]:.2f}%': '#FF0000',
+                                             f'0.1-0.2: Highly Degraded {formatted_histogram[2]:.2f}%':'#FFFF00',
+                                             f'0.2-0.3: Degraded {formatted_histogram[3]:.2f}%': '#FFA500',
+                                             f'0.3-0.4: Moderately Degraded {formatted_histogram[4]:.2f}%': '#00FE00',
+                                             f'0.4-0.5: Dense {formatted_histogram[5]:.2f}%': '#00A400',
+                                             f'>0.5: Very Dense {formatted_histogram[6]:.2f}%': '#006D00',
                                             },
                                 position='bottomright')
                     vis_params = {'min': -0.1,