我正在尝试使用Holoview和Bokeh制作和弦图。我可以执行第一步,as explained here;但是,我无法进行分组,也无法显示颜色和标签。 首先,我的数据* chord = *:
[['GK', 'WD ', 2],
['GK', 'C ', 1],
['GD', 'GK ', 1],
['GD', 'C ', 2],
['GD', 'WA ', 4],
['WD', 'GD ', 4],
['WD', 'C ', 1],
['WD', 'WA ', 2],
['WD', 'GA ', 1],
['C', 'GD ', 1],
['C', 'WD ', 1],
['C', 'WA ', 3],
['C', 'GA ', 2],
['C', 'GS ', 10],
['WA', 'C ', 2],
['WA', 'GA ', 9],
['WA', 'GS ', 7],
['GA', 'C ', 3],
['GA', 'WA ', 4],
['GA', 'GS ', 5],
['GS', 'C ', 6],
['GS', 'WA ', 1]]
值是[源,目标,值]。 让我感到困扰的是,“和弦”图不会自动对源进行分组,如果我改用Sankey图,则会发生这种情况。 因此,我创建了我的组和标签:
group = [1,1,2,2,2,3,3,3,3,4,4,4,4,4,5,5,5,6,6,6,7,7]
label = ['GK','GK','GD','GD','GD','WD','WD','WD','WD','C','C','C','C','C','WA','WA','WA','GA','GA','GA','GS','GS']
index =list(np.arange(0,22)
尽管如此,结果远非预期:
import numpy as np
import pandas as pd
import holoviews as hv
hv.extension('bokeh')
%output size=200
chords = pd.DataFrame(chord, columns=['source','target','value'])
%opts Chord [label_index='source' color_index='target' edge_color_index='source']
%opts Chord (cmap='Category20' edge_cmap='Category20')
hv.Chord(chords)
如果我通过
hv.Chord(chords, nodes)
我收到此错误:
AttributeError: 'DataFrame' object has no attribute 'ndims'
谢谢您的帮助!
答案 0 :(得分:0)
如果您想将nodes
传递给hv.Chord()
,请记住,您应该先致电hv.Dataset()
来获取nodes
,例如:
nodes = hv.Dataset(nodes_df, 'index')
,其中nodes_df
是熊猫的数据框。
和下一个:
chord = hv.Chord((links, nodes)).select(value=(5, None)