Python 在虚线/绘图仪中显示属性会导致KeyError
我试图将文档中的引用可视化。为此,我使用了Python 在虚线/绘图仪中显示属性会导致KeyError,python,networkx,Python,Networkx,我试图将文档中的引用可视化。为此,我使用了Elements.csv,如下所示: Doc,Description,DocumentID SOP Laboratory,This SOP should be used in the lab,10414 Visual Design,Basics for Visual Design,1200139348 GMP,Good Manufacturing Practises,4638261 Windows PC manual,This manual descri
Elements.csv
,如下所示:
Doc,Description,DocumentID
SOP Laboratory,This SOP should be used in the lab,10414
Visual Design,Basics for Visual Design,1200139348
GMP,Good Manufacturing Practises,4638261
Windows PC manual,This manual describes how to use Windows PCs,271922
在Connections.csv
中,我有以下参考资料:
Source,Target
SOP Laboratory,Windows PC manual
SOP Laboratory,GMP
Visual Design,Windows PC manual
也就是说,SOP实验室
中有一个参考,指向Windows PC手册
,等等
我用于可视化此网络的代码与Dash/Plotly一起工作:
import pandas as pd
import networkx as nx
import plotly.graph_objs as go
import plotly
import dash
import dash_core_components as dcc
import dash_html_components as html
## Dash setup
external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']
app = dash.Dash(__name__, external_stylesheets=external_stylesheets)
## Data
edges = pd.read_csv('Connections.csv', encoding="utf8")
nodes = pd.read_csv('Elements.csv', encoding="utf8")
## Graph
G = nx.from_pandas_edgelist(edges, 'Source', 'Target')
nx.set_node_attributes(G, nodes.set_index('Doc')['Description'].to_dict(), 'Description')
nx.set_node_attributes(G, nodes.set_index('Doc')['DocumentID'].to_dict(), 'DocumentID')
pos = nx.spring_layout(G)
for node in G.nodes:
G.nodes[node]['pos'] = list(pos[node])
traceRecode = []
index = 0
for edge in G.edges:
x0, y0 = G.nodes[edge[0]]['pos']
x1, y1 = G.nodes[edge[1]]['pos']
trace = go.Scatter(x=tuple([x0, x1, None]), y=tuple([y0, y1, None]),
mode='lines',
hoverinfo='none',
line={'width': 2},
marker=dict(color='#000000'),
line_shape='spline',
opacity=1)
traceRecode.append(trace)
index = index + 1
node_trace = go.Scatter(
x=[],
y=[],
hovertext=[],
text=[],
mode='markers+text',
textposition="bottom center",
hoverinfo='text',
marker=dict(
showscale=True,
colorscale='Agsunset',
reversescale=True,
color=[],
size=20,
colorbar=dict(
thickness=15,
title='Node Connections',
xanchor='left',
titleside='right'
),
line=dict(width=0)))
index = 0
for node in G.nodes():
x, y = G.nodes[node]['pos']
# hovertext = "Document Name: " + str(G.nodes[node]['Doc']) + "<br>" + "Document ID: " + str(G.nodes[node]['DocumentID'])
# text = nodes['Doc'][index]
node_trace['x'] += tuple([x])
node_trace['y'] += tuple([y])
# node_trace['hovertext'] += tuple([hovertext])
# node_trace['text'] += tuple([text])
index = index + 1
for node, adjacencies in enumerate(G.adjacency()):
node_trace['marker']['color']+=tuple([len(adjacencies[1])])
node_info = adjacencies[0] #+ ' (' +str(adjacencies[1]) + ')' #+' (' +str(len(adjacencies[1])) + ' connections)'
node_trace['text']+=tuple([node_info])
traceRecode.append(node_trace)
figure = {
"data": traceRecode,
"layout": go.Layout(title='Document Overview', showlegend=False, hovermode='closest',
margin={'b': 40, 'l': 40, 'r': 40, 't': 40},
xaxis={'showgrid': False, 'zeroline': False, 'showticklabels': False},
yaxis={'showgrid': False, 'zeroline': False, 'showticklabels': False},
height=1000,
clickmode='event+select',
annotations=[
dict(
ax=(G.nodes[edge[0]]['pos'][0] + G.nodes[edge[1]]['pos'][0]) / 2,
ay=(G.nodes[edge[0]]['pos'][1] + G.nodes[edge[1]]['pos'][1]) / 2, axref='x', ayref='y',
x=(G.nodes[edge[1]]['pos'][0] * 3 + G.nodes[edge[0]]['pos'][0]) / 4,
y=(G.nodes[edge[1]]['pos'][1] * 3 + G.nodes[edge[0]]['pos'][1]) / 4, xref='x', yref='y',
showarrow=True,
arrowhead=4,
arrowsize=2,
arrowwidth=1,
opacity=1
) for edge in G.edges]
)}
app.layout = html.Div([
dcc.Graph(figure=figure
),
])
if __name__ == '__main__':
app.run_server(debug=True)
将熊猫作为pd导入
将networkx导入为nx
导入plotly.graph_objs作为go
绘声绘色地导入
导入破折号
将仪表板核心组件作为dcc导入
将dash_html_组件导入为html
##破折号设置
外部_样式表=['https://codepen.io/chriddyp/pen/bWLwgP.css']
app=dash.dash(名称,外部样式表=外部样式表)
##资料
edges=pd.read\u csv('Connections.csv',encoding=“utf8”)
nodes=pd.read\u csv('Elements.csv',encoding=“utf8”)
##图表
G=nx.来自\u pandas\u edgelist(边、'源'、'目标')
nx.set_node_属性(G,nodes.set_index('Doc')['Description'])。设置为_dict(),'Description')
nx.set_node_属性(G,nodes.set_index('Doc')['DocumentID'])。设置为_dict(),'DocumentID')
位置=nx.弹簧布置图(G)
对于G.nodes中的节点:
G.nodes[node]['pos']=列表(pos[node])
traceRecode=[]
索引=0
对于G.边中的边:
x0,y0=G.nodes[edge[0]['pos']
x1,y1=G.节点[边[1]['pos']
trace=go.Scatter(x=tuple([x0,x1,None]),y=tuple([y0,y1,None]),
mode='lines',
hoverinfo='none',
行={'width':2},
marker=dict(颜色='#000000'),
直线形状='样条',
不透明度=1)
traceRecode.append(跟踪)
索引=索引+1
节点_trace=go.Scatter(
x=[],
y=[],
hovertext=[],
text=[],
mode='markers+text',
textposition=“底部中心”,
hoverinfo='text',
记号笔(
showscale=True,
色阶='AG日落',
反向刻度=真,
颜色=[],
尺寸=20,
色条(
厚度=15,
title='Node Connections',
xanchor='left',
标题旁边的“='right'
),
行=dict(宽度=0)))
索引=0
对于G.nodes()中的节点:
x、 y=G.nodes[node]['pos']
#hovertext=“文档名称:”+str(G.nodes[node]['Doc'])+”
“+”文档ID:“+str(G.nodes[node]['DocumentID']))
#text=节点['Doc'][索引]
节点跟踪['x']+=元组([x])
节点跟踪['y']+=元组([y])
#节点\跟踪['hovertext']+=元组([hovertext])
#节点跟踪['text']+=元组([text])
索引=索引+1
对于节点,枚举中的邻接(G.adjacency()):
节点跟踪['marker']['color']+=tuple([len(邻接[1]))
node_info=邻接[0]#+'('+str(邻接[1])+'))'#+'('+str(len(邻接[1]))+'连接)'
节点跟踪['text']+=元组([node\u info])
traceRecode.append(节点\跟踪)
图={
“数据”:traceRecode,
“布局”:go.layout(title='Document Overview',showlegend=False,hovermode='closest',
边距={'b':40,'l':40,'r':40,'t':40},
xaxis={'showgrid':False,'zeroline':False,'showticklabels':False},
yaxis={'showgrid':False,'zeroline':False,'showticklabels':False},
高度=1000,
单击模式=”事件+选择“,
注释=[
口述(
ax=(G.nodes[edge[0]['pos'][0]+G.nodes[edge[1]['pos'][0])/2,
ay=(G.nodes[edge[0]['pos'][1]+G.nodes[edge[1]['pos'][1])/2,axref='x',ayref='y',
x=(G.nodes[edge[1]['pos'][0]*3+G.nodes[edge[0]['pos'][0])/4,
y=(G.nodes[edge[1]['pos'][1]*3+G.nodes[edge[0]['pos'][1])/4,xref='x',yref='y',
showarrow=True,
箭头=4,
箭头大小=2,
箭头宽度=1,
不透明度=1
)对于G.边中的边]
)}
app.layout=html.Div([
图(图=图
),
])
如果uuuu name uuuuuu='\uuuuuuu main\uuuuuuu':
app.run_服务器(debug=True)
我从中找到了这个代码
这导致:
然而,错误的方向是错误的。(有关正确的方向,请参见红色箭头。)
我想要实现的是(“Github repo中的Bob”和“Type1”),即在节点上悬停时显示文档名称、描述和ID:
然而,当我注释行时,就像这样
index = 0
for node in G.nodes():
x, y = G.nodes[node]['pos']
hovertext = "Document Name: " + str(G.nodes[node]['Doc']) + "<br>" + "Document ID: " + str(G.nodes[node]['DocumentID'])
text = nodes['Doc'][index]
node_trace['x'] += tuple([x])
node_trace['y'] += tuple([y])
node_trace['hovertext'] += tuple([hovertext])
node_trace['text'] += tuple([text])
index = index + 1
# for node, adjacencies in enumerate(G.adjacency()):
# node_trace['marker']['color']+=tuple([len(adjacencies[1])])
# node_info = adjacencies[0] #+ ' (' +str(adjacencies[1]) + ')' #+' (' +str(len(adjacencies[1])) + ' connections)'
# node_trace['text']+=tuple([node_info])
index=0
对于G.nodes()中的节点:
x、 y=G.nodes[node]['pos']
hovertext=“文档名称:”+str(G.nodes[node]['Doc'])+”
“+”文档ID:“+str(G.nodes[node]['DocumentID']))
text=节点['Doc'][索引]
节点跟踪['x']+=元组([x])
节点跟踪['y']+=元组([y])
节点\跟踪['hovertext']+=元组([hovertext])
节点跟踪['text']+=元组([text])
索引=索引+1
#对于节点,枚举中的邻接(G.adjacency()):
#节点跟踪['marker']['color']+=tuple([len(邻接[1]))
#node_info=邻接[0]#+'('+str(邻接[1])+'))'#+'('+str(len(邻接[1]))+'连接)'
#节点跟踪['text']+=元组([node\u info])
但是,这会导致一个错误:
Traceback (most recent call last):
File "C:\Users\rothstem\Desktop\LearnDash\StackEX\app.py", line 73, in <module>
hovertext = "Document Name: " + str(G.nodes[node]['Doc']) + "<br>" + "Document ID: " + str(G.nodes[node]['DocumentID'])
KeyError: 'Doc'
回溯(最近一次呼叫最后一次):
文件“C:\Users\rothstem\Desktop\LearnDash\StackEX\app.py”,第73行,在
hovertext=“文档名称:”+str(G.nodes[node]['Doc'])+”
“+”文档ID:“+str(G.nodes[node]['DocumentID']))
KeyError:“Doc”
我不太明白,因为上面定义了
'Doc'
。在图形创建过程中,您创建了节点属性“Description”
:
因此,您只需将“Doc”
替换为“Description”
:
hovertext=“文档名称:”+
nx.set_node_attributes(G, nodes.set_index('Doc')['Description'].to_dict(), 'Description')
hovertext = "Document Name: " + str(G.nodes[node]['Description']) + "<br>" + "Document ID: " + str(G.nodes[node]['DocumentID'])