Created
September 6, 2019 15:03
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import numpy as np | |
import pandas as pd | |
from bokeh.models import Circle, ColumnDataSource, Range1d, HoverTool, CustomJS | |
from bokeh.transform import factor_cmap | |
from bokeh.plotting import figure, show, output_file | |
output_file("hover_linked_samples.html") | |
raw_array=np.random.rand(80,2) | |
fields = ["I", "II", "III", "IV"] | |
samples = np.arange(20) | |
index = pd.MultiIndex.from_product([samples, fields], names=['ID', 'field']) | |
data = pd.DataFrame(data=raw_array, | |
columns=['x', 'y'], | |
index=index) | |
data.reset_index(inplace=True) | |
data['alpha'] = 0.4 | |
source = ColumnDataSource(data) | |
xdr = Range1d(start=-0.05, end=1.05) | |
ydr = Range1d(start=-0.05, end=1.05) | |
s = figure(plot_width=500, plot_height=500, x_range=xdr, y_range=ydr, title="Hover over points", ) | |
cr = s.scatter("x", "y", source=source, legend="field", fill_alpha='alpha', size=20, | |
color=factor_cmap('field', 'Category10_5', fields)) | |
# Add a hover tool, that highlights all fields from the hovered sample. | |
code = """ | |
var cdata = circle.data; | |
var indices = cb_data.index['1d'].indices; | |
for (var i = 0; i < cdata['ID'].length; i++){ | |
cdata['alpha'][i] = 0.4; | |
} | |
for (var j = 0; j < indices.length; j++){ | |
ind0=indices[j]; | |
id = cdata['ID'][ind0]; | |
for (var k = 0; k < cdata['ID'].length; k++){ | |
if (id==cdata['ID'][k]){ | |
cdata['alpha'][k] = 1; | |
} | |
} | |
} | |
circle.data = cdata; | |
circle.change.emit(); | |
""" | |
callback = CustomJS(args={'circle': cr.data_source}, code=code) | |
s.add_tools(HoverTool(tooltips=None, callback=callback, renderers=[cr])) | |
show(s) |
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@mattpap