Update SOM example

examples/ksom_colors.py

@@ -37,6 +37,7 @@ class Vis2DColorSOM(pl.Callback):
         h, w = pl_module._grid.shape[:2]
         protos = pl_module.prototypes.view(h, w, 3)
         ax.imshow(protos)
+        ax.axis("off")
 
         # Overlay color names
         d = pl_module.compute_distances(self.data)
@@ -49,7 +50,10 @@ class Vis2DColorSOM(pl.Callback):
                      va="center",
                      bbox=dict(facecolor="white", alpha=0.5, lw=0))
 
-        plt.pause(self.pause_time)
+        if trainer.current_epoch != trainer.max_epochs - 1:
+            plt.pause(self.pause_time)
+        else:
+            plt.show(block=True)
 
 
 if __name__ == "__main__":
@@ -65,12 +69,12 @@ if __name__ == "__main__":
     hex_colors = [
         "#000000", "#0000ff", "#00007f", "#1f86ff", "#5466aa", "#997fff",
         "#00ff00", "#ff0000", "#00ffff", "#ff00ff", "#ffff00", "#ffffff",
-        "#545454", "#7f7f7f", "#a8a8a8"
+        "#545454", "#7f7f7f", "#a8a8a8", "#808000", "#800080", "#ffa500"
     ]
     cnames = [
         "black", "blue", "darkblue", "skyblue", "greyblue", "lilac", "green",
-        "red", "cyan", "violet", "yellow", "white", "darkgrey", "mediumgrey",
-        "lightgrey"
+        "red", "cyan", "magenta", "yellow", "white", "darkgrey", "mediumgrey",
+        "lightgrey", "olive", "purple", "orange"
     ]
     colors = list(hex_to_rgb(hex_colors))
     data = torch.Tensor(colors) / 255.0
@@ -81,7 +85,7 @@ if __name__ == "__main__":
     hparams = dict(
         shape=(18, 32),
         alpha=1.0,
-        sigma=8,
+        sigma=16,
         lr=0.1,
     )
 
@@ -103,7 +107,7 @@ if __name__ == "__main__":
     # Setup trainer
     trainer = pl.Trainer.from_argparse_args(
         args,
-        max_epochs=300,
+        max_epochs=500,
         callbacks=[vis],
         weights_summary="full",
     )