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Bokeh confusion matrix plot bug
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#cf https://groups.google.com/a/continuum.io/forum/#!msg/bokeh/rvFcJV5_WQ8/Pf5hsF9mCAAJ | |
from collections import OrderedDict | |
import numpy as np | |
from bokeh.plotting import figure, show, output_file | |
from bokeh.models import HoverTool, ColumnDataSource | |
N = 20 | |
arr2d = np.random.randint(0,10,size=(N,N)) | |
predicted = [] | |
actual = [] | |
count = [] | |
color = [] | |
alpha = [] | |
the_color = '#cc0000' | |
for col in range(N): | |
for rowi in range(N): | |
predicted.append(str(rowi)) | |
actual.append(str(col)) | |
count.append(arr2d[rowi,col]) | |
a = arr2d[rowi,col]/10.0 | |
alpha.append(a) | |
color.append(the_color) | |
source = ColumnDataSource( | |
data=dict(predicted=predicted, actual=actual, count=count, alphas=alpha, colors=color) | |
) | |
p = figure(title='Confusion Matrix', | |
x_axis_location="above", tools="resize,hover,save", | |
y_range=list(reversed(actual)), x_range=actual) | |
p.plot_width = 600 | |
p.plot_height = p.plot_width | |
rectwidth = 10.9 | |
p.rect('predicted', 'actual', rectwidth, rectwidth, source=source, | |
color='colors', alpha='alphas',line_width=1, line_color='k') | |
p.axis.major_label_text_font_size = "12pt" | |
p.axis.major_label_standoff = 1 | |
p.xaxis.major_label_orientation = np.pi/3 | |
hover = p.select(dict(type=HoverTool)) | |
hover.tooltips = OrderedDict([ | |
('predicted', '@predicted'), | |
('actual', '@actual'), | |
('count', '@count'), | |
]) | |
show(p) |
Author
rcompton
commented
Dec 10, 2015
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