小白学Python（6）——python-pptx 添加图表

添加图表

以下代码在新演示文稿中添加单系列柱形图

 from pptx import Presentation
 from pptx.chart.data import CategoryChartData
 from pptx.enum.chart import XL_CHART_TYPE
 from pptx.util import Inches

 # create presentation with 1 slide ------
 prs = Presentation()
 slide = prs.slides.add_slide(prs.slide_layouts[5])

 # define chart data ---------------------
 chart_data = CategoryChartData()
 chart_data.categories = ['East', 'West', 'Midwest']
 chart_data.add_series('Series 1', (19.2, 21.4, 16.7))

 # add chart to slide --------------------
 x, y, cx, cy = Inches(2), Inches(2), Inches(6), Inches(4.5)
 slide.shapes.add_chart(
     XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
 )

 prs.save('chart-01.pptx')

 from pptx import Presentation
 from pptx.chart.data import CategoryChartData
 from pptx.enum.chart import XL_CHART_TYPE
 from pptx.util import Inches

 # create presentation with 1 slide ------
 prs = Presentation()
 slide = prs.slides.add_slide(prs.slide_layouts[5])

 # define chart data ---------------------
 chart_data = CategoryChartData()
 chart_data.categories = ['East', 'West', 'Midwest']
 chart_data.add_series('Q1 Sales', (19.2, 21.4, 16.7))
 chart_data.add_series('Q2 Sales', (22.3, 28.6, 15.2))
 chart_data.add_series('Q3 Sales', (20.4, 26.3, 14.2))

 # add chart to slide --------------------
 x, y, cx, cy = Inches(2), Inches(2), Inches(6), Inches(4.5)
 slide.shapes.add_chart(
     XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
 )

 graphic_frame = slide.shapes.add_chart(
     XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
 )

 chart = graphic_frame.chart

 prs.save('chart-01.pptx')

请注意，我们捕获了add_chart()调用返回的形状引用 graphic_frame，然后使用其chart属性从图形框架中提取图表对象 。我们需要图表参考来获取我们在接下来的步骤中需要的属性。该 add_chart()方法不直接返回图表对象。那是因为图表本身并不是一种形状。相反，它是图形框架形状中包含的图形（DrawingML）对象。表也​​以这种方式工作，也包含在图形框架形状中。

 from pptx import Presentation
 from pptx.chart.data import CategoryChartData
 from pptx.enum.chart import XL_CHART_TYPE
 from pptx.util import Inches

 # create presentation with 1 slide ------
 prs = Presentation()
 slide = prs.slides.add_slide(prs.slide_layouts[5])

 # define chart data ---------------------
 chart_data = CategoryChartData()
 chart_data.categories = ['East', 'West', 'Midwest']
 chart_data.add_series('Q1 Sales', (19.2, 21.4, 16.7))
 chart_data.add_series('Q2 Sales', (22.3, 28.6, 15.2))
 chart_data.add_series('Q3 Sales', (20.4, 26.3, 14.2))

 # add chart to slide --------------------

 x, y, cx, cy = Inches(2), Inches(2), Inches(6), Inches(4.5)

 slide.shapes.add_chart(
     XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
 )

 graphic_frame = slide.shapes.add_chart(
     XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
 )

 chart = graphic_frame.chart

 from pptx.dml.color import RGBColor
 from pptx.enum.chart import XL_LABEL_POSITION

 plot = chart.plots[0]
 plot.has_data_labels = True
 data_labels = plot.data_labels

 data_labels.font.color.rgb = RGBColor(0x0A, 0x42, 0x80)
 data_labels.position = XL_LABEL_POSITION.INSIDE_END

 prs.save('chart-01.pptx')

后面加上

 from pptx.enum.chart import XL_LEGEND_POSITION

 chart.has_legend = True
 chart.legend.position = XL_LEGEND_POSITION.RIGHT
 chart.legend.include_in_layout = False

 from pptx import Presentation
 from pptx.chart.data import CategoryChartData
 from pptx.enum.chart import XL_CHART_TYPE
 from pptx.util import Inches

 # create presentation with 1 slide ------
 prs = Presentation()
 slide = prs.slides.add_slide(prs.slide_layouts[5])

 # define chart data ---------------------
 chart_data = CategoryChartData()

 chart_data.categories = ['Q1 Sales', 'Q2 Sales', 'Q3 Sales']
 chart_data.add_series('West',    (32.2, 28.4, 34.7))
 chart_data.add_series('East',    (24.3, 30.6, 20.2))
 chart_data.add_series('Midwest', (20.4, 18.3, 26.2))

 x, y, cx, cy = Inches(2), Inches(2), Inches(6), Inches(4.5)

 chart = slide.shapes.add_chart(
     XL_CHART_TYPE.LINE, x, y, cx, cy, chart_data
 ).chart

 prs.save('chart-01.pptx')

折线图的方式与条形图或柱形图几乎相同，主要区别在于add_chart()调用中提供的图表类型。

XY和气泡图一直出现错误，暂时没有完成，正在研究……