A previous question展示了如何将错误栏高度设置为在python中设置的固定值。是否可以设置错误栏高度为excel在其他单元格中存储的计算值？理想情况下，更改基础数据可能会改变错误栏高度？
就此而言，excel甚至可以做到吗？
这是我的尝试：
from openpyxl import Workbook
from openpyxl.chart import BarChart, Reference
from openpyxl.chart.data_source import NumDataSource, NumData, NumVal, NumRef
from openpyxl.chart.series import ErrorBars
from openpyxl.chart.series_factory import SeriesFactory
from random import randint
# Create a new workbook
book = Workbook(encoding="utf-8")
sheet = book.active
# Write 5 random ints to worksheet
for i in range (1,6):
sheet.cell(row=i,column=1,value=randint(1,100))
# write formula to computer Average
sheet.cell(row=6,column=1,value='=AVERAGE(A1:A5)')
# write formula to compute StdDev
sheet.cell(row=7,column=1,value='=_xlfn.STDEV.S(A1:A4)/10')
# create a chart with single bar whose height is the Average As Calculated by Excel
chart = BarChart()
barheight = Reference(sheet, min_col=1, min_row=6, max_col=1, max_row=6)
series = SeriesFactory(barheight)
# This creates an error bar of static height 5
myNumVals = [NumVal(0, None, v=5)]
myNumData = NumData(pt=myNumVals)
myNumDataSource = NumDataSource(numLit=myNumData)
# This seems like something that might work, but it doesn't work.
# myNumDataSource = NumDataSource(NumRef("A7"))
myErrorBars=ErrorBars(plus=myNumDataSource,minus=myNumDataSource,errDir='y',errValType='cust')
series.errBars = myErrorBars
chart.series.append(series)
sheet.add_chart(chart, "A9")
book.save('output.xlsx')