我习惯于Plotly绘制甘特图:
fig = ff.create_gantt(df, index_col='Resource', show_colorbar=True, group_tasks=True)
索引何时输入
index_col='Resource'
超出 10 ,出现错误:
plotly.exceptions.PlotlyError:错误。 “颜色”中的颜色数量必须不少于组列中唯一索引值的数量。
我认为这是由于Plotly的默认颜色仅限于十种不同的颜色(例如Plotly colours list)
我想要更多颜色(>= index of 'Resource'
)。如何添加和定义它们?
编辑: 这是一个可用于测试的示例
from __future__ import print_function
from collections import defaultdict
from plotly.offline import plot
import plotly.figure_factory as ff
import pandas as pd
from pandas import ExcelWriter
from pandas import ExcelFile
import datetime
def gantt_test():
"""Solve a small flexible jobshop problem."""
# convert to date
serial = 43466.0 # 01.01.2019 Excel
seconds = (serial - 25569) * 86400.0 # convert to seconds
date_date = datetime.datetime.utcfromtimestamp(seconds)
date_string = date_date.strftime("%Y-%m-%d %H:%M:%S")
df = [dict(Task="machine_99", Start=0, Finish=1, Resource="job_99")]
df.clear()
start_value = 0 # in min
duration = 120 # in min
for i in range(1, 12):
b_dict = dict(Task="M " + str(i), Start=datetime.datetime.utcfromtimestamp((serial - 25569 + (start_value/(60*24.0))) * 86400.0).strftime("%Y-%m-%d %H:%M:%S"), Finish=datetime.datetime.utcfromtimestamp((serial - 25569 + (start_value +duration)/(60*24.0)) * 86400.0).strftime("%Y-%m-%d %H:%M:%S"), Resource="job " + str(i))
df.append(b_dict)
start_value = 10*i
fig = ff.create_gantt(df, index_col='Resource', show_colorbar=True, group_tasks=True)
plot(fig, filename='gantt-group-tasks-together.html')
gantt_test()
如果您更改
for i in range(1, 12):
小于
12
答案 0 :(得分:0)
我通过更改来使它工作
fig = ff.create_gantt(df, index_col='Resource', show_colorbar=True, group_tasks=True)
到
fig = ff.create_gantt(df, colors=colors, index_col='Resource', show_colorbar=True, group_tasks=True)
附加colors
,如显示
r = lambda: random.randint(0,255)
#print('#%02X%02X%02X' % (r(),r(),r()))
colors = ['#%02X%02X%02X' % (r(),r(),r())]
for i in range(1, 15):
b_dict = dict(Task="M " + str(i), Start=datetime.datetime.utcfromtimestamp((serial - 25569 + (start_value/(60*24.0))) * 86400.0).strftime("%Y-%m-%d %H:%M:%S"), Finish=datetime.datetime.utcfromtimestamp((serial - 25569 + (start_value +duration)/(60*24.0)) * 86400.0).strftime("%Y-%m-%d %H:%M:%S"), Resource="job " + str(i))
df.append(b_dict)
start_value = 10*i
colors.append('#%02X%02X%02X' % (r(),r(),r()))
现在为每种资源添加了随机颜色。
答案 1 :(得分:0)
您还可以使用hashlib
根据某些输入字符串(例如pandas Dataframe列)创建更多颜色。
一个最小的例子:
import hashlib
colours = []
for key in listOfStrings:
colour = colFromStr(str(key))
colours.append(f"#{colour}")
fig = plotly.figure_factory.create_gantt(dataToPlot, colors=colours)
def colFromStr(inputString):
hashedString = hashlib.sha256(inputString.encode())
return hashedString.hexdigest()[len(hashedString.hexdigest())-6:]