openpyxl 设置条形图中条形的颜色

Question

我想用 openpyxl 设置条形图中条形的颜色。我创建了以下

data = Reference(sheet, min_col=3, min_row=6, max_col=4, max_row=10)
titles = Reference(sheet, min_col=1, min_row=6, max_row=10)
chart = BarChart3D()
chart.title = title
chart.add_data(data=data, titles_from_data=True)
chart.set_categories(titles)

我在这里找到如何使用 chart.plot_area.graphical_properties

更改背景颜色

但是，我不知道要更改条形的颜色。

Answer 1

对于 2D 图，我使用 graphicalProperties.line.solidFill 和 graphicalProperties.solidFill：

wb = load_workbook('data.xlsx')
ws = wb['sheet1']

chart = BarChart()
chart.type = "col"
chart.style = 10
chart.title = "Chart Title"
chart.y_axis.title = 'Y Axis'
chart.x_axis.title = 'X Axis'

data = Reference(ws, min_col=3, min_row=1, max_row=3, max_col=3)
cats = Reference(ws, min_col=1, min_row=2, max_row=3)

chart.add_data(data, titles_from_data=True)
chart.set_categories(cats)
chart.shape = 4

# Change bar filling and line color 
s = chart.series[0]
s.graphicalProperties.line.solidFill = "00000"
s.graphicalProperties.solidFill = "ff9900" 


ws.add_chart(chart, "A10")
wb.save("bar.xlsx")

希望3D图也一样

Answer 2

我将 one_color 图表更改为具有 chart.varyColors 属性的 multiple_color 图表：

chart.varyColors = "0000FFFF"

字符串"0000FFFF"是openpyxl模块中的颜色值，可以自己选择 https://openpyxl.readthedocs.io/en/stable/styles.html#colours

openpyxl 设置条形图中条形的颜色

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