from bokeh.models import HoverTool
from bokeh.plotting import figure, show, output_file, ColumnDataSource
from bokeh.layouts import gridplot
from bokeh.palettes import magma

def plot(u, descs=index_to_interesting_subject):
    source = ColumnDataSource(data=dict(
        x1=u[:, 0],
        x2=u[:, 1],
        x3=u[:, 2],
        x4=u[:, 3],
        desc=descs,
    ))

    hover = HoverTool(tooltips=[
        ("index", "$index"),
        ("desc", "@desc"),
    ])

    def plot_it(x, y):
        p = figure(plot_width=250, plot_height=250, tools=[hover])
        p.scatter(
            x, y,
            size=5,
            source=source,
            line_color=None,
            alpha=0.8,
        )
        return p

    p12 = plot_it('x2', 'x1')
    p13 = plot_it('x3', 'x1')
    p14 = plot_it('x4', 'x1')

    p23 = plot_it('x3', 'x2')
    p24 = plot_it('x4', 'x2')

    p34 = plot_it('x4', 'x3')

    grid = gridplot([[p12, p13, p14], [None, p23, p24], [None, None, p34]])

    output_file("word_doc.html", title="word-doc")

    show(grid)

plot(u)