Make a light-weight stat figure

def plotstat(data, circleinds=None, crossinds=None, edgeinds=None, url_path=None, fileroot=None, 
             tools="hover,tap,pan,box_select,wheel_zoom,reset", plot_width=450, plot_height=400):
    """ Make a light-weight stat figure """

    fields = ['imkur', 'specstd', 'sizes', 'colors', 'snrs', 'key']

    if not circleinds: circleinds = range(len(data['snrs']))

    # set ranges
    datalen = len(data['dm'])
    inds = circleinds + crossinds + edgeinds
    specstd = [data['specstd'][i] for i in inds]
    specstd_min = min(specstd)
    specstd_max = max(specstd)
    imkur = [data['imkur'][i] for i in inds]
    imkur_min = min(imkur)
    imkur_max = max(imkur)

    source = ColumnDataSource(data = dict({(key, tuple([value[i] for i in circleinds if i not in edgeinds])) 
                                           for (key, value) in data.iteritems() if key in fields}))
    stat = Figure(plot_width=plot_width, plot_height=plot_height, toolbar_location="left", x_axis_label='Spectral std',
                  y_axis_label='Image kurtosis', x_range=(specstd_min, specstd_max), 
                  y_range=(imkur_min, imkur_max), tools=tools, output_backend='webgl')
    stat.circle('specstd', 'imkur', size='sizes', line_color=None, fill_color='colors', fill_alpha=0.2, source=source)

    if crossinds:
        sourceneg = ColumnDataSource(data = dict({(key, tuple([value[i] for i in crossinds]))
                                                  for (key, value) in data.iteritems() if key in fields}))
        stat.cross('specstd', 'imkur', size='sizes', line_color='colors', line_alpha=0.3, source=sourceneg)

    if edgeinds:
        sourceedge = ColumnDataSource(data = dict({(key, tuple([value[i] for i in edgeinds]))
                                                   for (key, value) in data.iteritems() if key in fields}))
        stat.circle('specstd', 'imkur', size='sizes', line_color='colors', fill_color='colors', source=sourceedge, line_alpha=0.5, fill_alpha=0.2)

    hover = stat.select(dict(type=HoverTool))
    hover.tooltips = OrderedDict([('SNR', '@snrs'), ('key', '@key')])

    if url_path and fileroot:
        url = '{}/cands_{}_@key.png'.format(url_path, fileroot)
        taptool = stat.select(type=TapTool)
        taptool.callback = OpenURL(url=url)

    return stat