def visualize(data):
    title_str = f'Title'
    fig = px.imshow(data[[str(i) for i in range(1, 8)]], color_continuous_scale=["red", "orange", "blue", 'black'],
                    title=title_str,)
    fig.update(data=[{'hovertemplate': "Day: %{x}<br>"
                                       "Physician: %{y}<br>",
                      }])
    colorbar = dict(thickness=25,
                     tickvals=[0, 1, 2, 3],
                     ticktext=['Morning', 'Noon', 'Evening', 'Off'])
    fig.update(layout_coloraxis_showscale=True, layout_coloraxis_colorbar=colorbar)
    fig.show()

    return fig