feat: Improve background and adding title to the plot

app.py

@@ -53,7 +53,7 @@ def draw_interactive_scatter_plot(
     labels_list = labels.astype(str).tolist()
     source = ColumnDataSource(data=dict(x=xs, y=ys, text=texts, label=values_list, original_label=labels_list))
     hover = HoverTool(tooltips=[(text_column, "@text{safe}"), (label_column, "@original_label")])
-    p = figure(plot_width=800, plot_height=800, tools=[hover])
+    p = figure(plot_width=800, plot_height=800, tools=[hover], title='2D visualization of tweets', background_fill_color="#fafafa")
     colors = factor_cmap("label", palette=[Pallete[int(id_)] for id_ in values_color_set], factors=values_set)
     p.circle("x", "y", size=10, source=source, fill_alpha=0.4, line_color=colors, fill_color=colors)
     p.axis.visible = False