如何在循环中给图表一个带有迭代器值的标题？

Question

我想循环添加标题（来自列表 titles）到我的每个图表，但是当我尝试向图表添加文本框（使用迭代器）时循环失败).是否允许迭代器值用作图表的标题？我正在使用 Python 3.6。有什么想法吗？

cleaned = [['AF In', 0.281777948141098],  ['AF Top', 0.11941492557525635],  ['AF View', 12.46446630278714],  ['AF  Non',   'AF V', 0.6745020151138306, 0.6817344427108765],  ['AF Cab',   'AF N',   'AF HB', 0.6878681182861328, 0.2603790760040283, 0.05175277590751648]]

titles = ['first', 'second', 'third', 'fourth', 'fifth']

from pptx import Presentation
from pptx.chart.data import ChartData
from pptx.chart.data import XyChartData
from pptx.enum.chart import XL_CHART_TYPE
from pptx.util import Inches,Pt
from pptx.enum.chart import XL_LABEL_POSITION
from pptx.dml.color import RGBColor
from pptx.dml import fill
from pptx.chart.chart import ChartTitle
from pptx.chart.chart import Chart

# create presentation
prs = Presentation()

#For each list items from query_results (cleaned)
for idx, (chart_result, t) in enumerate(zip(cleaned, titles)):
    #define size of chart
    x, y, cx, cy = Inches(2), Inches(2), Inches(6), Inches(4.5)

    try:

        #split the results into two arrays
        arr1, arr2 = np.array_split(chart_result,2)
        #create a table for chart data
        chart_data = CategoryChartData()
        #assign arr1 to categories
        chart_data.categories = arr1
        #assign arr2 to series
        chart_data.add_series('series_1',(float(x) for x in arr2))

        #add slide
        prs.slides.add_slide(prs.slide_layouts[6])
        #add chart to slide by index
        prs.slides[idx].shapes.add_chart(XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data)
        #chart = shapes[0].chart
        chart.chart_title.text_frame.text = t

    except:
        print(f'chart load failed {idx}')

Answer 1

确保您确实有对图表对象的引用；我没有在您的代码中看到可以提供给您的行。我推荐：

chart = prs.slides[idx].shapes.add_chart(...).chart

.add_chart()返回的对象是一个图形框架形状。此形状包含图表，它是使用 .chart 属性.

获得的

那么你在 try 块最后一行的赋值应该会成功。

Answer 2

我发现我的代码在幻灯片中迭代了两次。我替换了以下代码：

    #add slide
    prs.slides.add_slide(prs.slide_layouts[6])
    #add chart to slide by index
    prs.slides[idx].shapes.add_chart(XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data)
    #chart = shapes[0].chart
    chart.chart_title.text_frame.text = t

使用以下代码：

    #add slide
    slide = prs.slides.add_slide(prs.slide_layouts[6])
    #add chart to slide with title
    chart = slide.shapes.add_chart(XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data).chart
    chart.chart_title.text_frame.text = t

我认为 prs.slides[idx] 搞砸了。

如何在循环中给图表一个带有迭代器值的标题？

How to give a chart a title with iterator value in a loop?

python-3.x

python-pptx