openpyxl的chart
时间: 2023-11-10 07:06:40 浏览: 137
openpyxl是一个用于处理Excel文件的Python库。它提供了通过charts进行图表处理的功能。你可以使用openpyxl创建和编辑Excel文件中的图表。详细的官方文档可以在这里找到:http://openpyxl.readthedocs.io/en/stable/charts/bar.html。
在openpyxl中,你可以使用BarChart3D类创建3D柱状图。以下是一个例子代码:
```python
from openpyxl import Workbook
from openpyxl.chart import (Reference, Series, BarChart3D)
wb = Workbook()
ws = wb.active
rows = [
(None, 2013, 2014),
("Apples", 5, 4),
("Oranges", 6, 2),
("Pears", 8, 3)
]
for row in rows:
ws.append(row)
data = Reference(ws, min_col=2, min_row=1, max_col=3, max_row=4)
titles = Reference(ws, min_col=1, min_row=2, max_row=4)
chart = BarChart3D()
chart.title = "3D Bar Chart"
chart.add_data(data=data, titles_from_data=True)
chart.set_categories(titles)
ws.add_chart(chart, "E5")
wb.save("bar3d.xlsx")
```
这段代码会生成一个包含3D柱状图的Excel文件。柱状图的数据来自于`data`变量所引用的范围,而标题来自于`titles`变量所引用的范围。你可以根据需要调整范围并修改图表的样式和标题。
除了3D柱状图,你还可以使用LineChart类创建线图。以下是一个添加线图的函数示例:
```python
from openpyxl.chart import (Series, LineChart, Reference)
def add_line_chart(title, ws, min_col, min_row, max_col, max_row):
chart = LineChart()
chart.title = title
chart.style = 12
data = Reference(ws, min_col=min_col, min_row=min_row, max_col=max_col, max_row=max_row)
categories = Reference(ws, min_col=min_col, min_row=min_row+1, max_row=max_row)
series = Series(data, title_from_data=True)
chart.append(series)
chart.set_categories(categories)
ws.add_chart(chart, "E5")
```
你可以根据需要调用`add_line_chart`函数,传入相应的参数来添加线图到Excel文件中。
总结来说,openpyxl的chart模块提供了创建和编辑Excel文件中图表的功能,可以创建3D柱状图和线图,并且可以通过设置不同的参数来自定义图表的样式和数据范围。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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