Создание круговой диаграммы с линиями проводниками
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Эта статья объясняет, как создать круговую диаграмму с выносными линиями с нуля, используя API Aspose.Cells для Python via .NET. В Excel опция ‘Показать выносные линии’ установлена по умолчанию, поэтому при создании круговой диаграммы линии отображаются. Однако при создании аналогичной диаграммы с помощью API Aspose.Cells для Python via .NET необходимо явно установить свойство Series.has_leader_lines.
Чтобы продемонстрировать использование API Aspose.Cells для Python via .NET для создания круговой диаграммы с выносными линиями, сначала создадим новый Workbook и введем некоторые данные, которые будут служить источником данных для серии. После установки данных добавим Chart типа ChartType.PIE в коллекцию графиков и настроим его параметры для получения желаемого вида графика.
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| from aspose.cells import FileFormatType, Workbook | |
| from aspose.cells.charts import ChartType, DataLabelsSeparatorType, LabelPositionType | |
| # For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET | |
| # The path to the documents directory. | |
| dataDir = RunExamples.GetDataDir(".") | |
| # Create an instance of Workbook in XLSX format | |
| workbook = Workbook(FileFormatType.XLSX) | |
| # Access the first worksheet | |
| worksheet = workbook.worksheets[0] | |
| # Add two columns of data | |
| worksheet.cells.get("A1").put_value("Retail") | |
| worksheet.cells.get("A2").put_value("Services") | |
| worksheet.cells.get("A3").put_value("Info & Communication") | |
| worksheet.cells.get("A4").put_value("Transport Equip") | |
| worksheet.cells.get("A5").put_value("Construction") | |
| worksheet.cells.get("A6").put_value("Other Products") | |
| worksheet.cells.get("A7").put_value("Wholesale") | |
| worksheet.cells.get("A8").put_value("Land Transport") | |
| worksheet.cells.get("A9").put_value("Air Transport") | |
| worksheet.cells.get("A10").put_value("Electric Appliances") | |
| worksheet.cells.get("A11").put_value("Securities") | |
| worksheet.cells.get("A12").put_value("Textiles & Apparel") | |
| worksheet.cells.get("A13").put_value("Machinery") | |
| worksheet.cells.get("A14").put_value("Metal Products") | |
| worksheet.cells.get("A15").put_value("Cash") | |
| worksheet.cells.get("A16").put_value("Banks") | |
| worksheet.cells.get("B1").put_value(10.4) | |
| worksheet.cells.get("B2").put_value(5.2) | |
| worksheet.cells.get("B3").put_value(6.4) | |
| worksheet.cells.get("B4").put_value(10.4) | |
| worksheet.cells.get("B5").put_value(7.9) | |
| worksheet.cells.get("B6").put_value(4.1) | |
| worksheet.cells.get("B7").put_value(3.5) | |
| worksheet.cells.get("B8").put_value(5.7) | |
| worksheet.cells.get("B9").put_value(3) | |
| worksheet.cells.get("B10").put_value(14.7) | |
| worksheet.cells.get("B11").put_value(3.6) | |
| worksheet.cells.get("B12").put_value(2.8) | |
| worksheet.cells.get("B13").put_value(7.8) | |
| worksheet.cells.get("B14").put_value(2.4) | |
| worksheet.cells.get("B15").put_value(1.8) | |
| worksheet.cells.get("B16").put_value(10.1) | |
| # Create a pie chart and add it to the collection of charts | |
| id = worksheet.charts.add(ChartType.PIE, 3, 3, 23, 13) | |
| # Access newly created Chart instance | |
| chart = worksheet.charts[id] | |
| # Set series data range | |
| chart.n_series.add("B1:B16", True) | |
| # Set category data range | |
| chart.n_series.category_data = "A1:A16" | |
| # Turn off legend | |
| chart.show_legend = False | |
| # Access data labels | |
| dataLabels = chart.n_series[0].data_labels | |
| # Turn on category names | |
| dataLabels.show_category_name = True | |
| # Turn on percentage format | |
| dataLabels.show_percentage = True | |
| # Set position | |
| dataLabels.position = LabelPositionType.OUTSIDE_END | |
| # Set separator | |
| dataLabels.separator_type = DataLabelsSeparatorType.COMMA |
До сих пор мы создали круговую диаграмму и установили различные ее аспекты. Теперь мы собираемся включить линии-проводники для диаграммы. Обратите внимание, чтобы показать линии-проводники, нужно немного переместить метки данных.
Следующий кусок кода включает линии-проводники, обновляет диаграмму, а затем рассчитывает позиции меток данных для их соответствующего перемещения.
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| from aspose.cells import FileFormatType, Workbook | |
| from aspose.cells.charts import ChartType, DataLabelsSeparatorType, LabelPositionType | |
| # For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET | |
| # Create an instance of Workbook in XLSX format | |
| workbook = Workbook(FileFormatType.XLSX) | |
| # Access the first worksheet | |
| worksheet = workbook.worksheets[0] | |
| # Add two columns of data | |
| worksheet.cells.get("A1").put_value("Retail") | |
| worksheet.cells.get("A2").put_value("Services") | |
| worksheet.cells.get("A3").put_value("Info & Communication") | |
| worksheet.cells.get("A4").put_value("Transport Equip") | |
| worksheet.cells.get("A5").put_value("Construction") | |
| worksheet.cells.get("A6").put_value("Other Products") | |
| worksheet.cells.get("A7").put_value("Wholesale") | |
| worksheet.cells.get("A8").put_value("Land Transport") | |
| worksheet.cells.get("A9").put_value("Air Transport") | |
| worksheet.cells.get("A10").put_value("Electric Appliances") | |
| worksheet.cells.get("A11").put_value("Securities") | |
| worksheet.cells.get("A12").put_value("Textiles & Apparel") | |
| worksheet.cells.get("A13").put_value("Machinery") | |
| worksheet.cells.get("A14").put_value("Metal Products") | |
| worksheet.cells.get("A15").put_value("Cash") | |
| worksheet.cells.get("A16").put_value("Banks") | |
| worksheet.cells.get("B1").put_value(10.4) | |
| worksheet.cells.get("B2").put_value(5.2) | |
| worksheet.cells.get("B3").put_value(6.4) | |
| worksheet.cells.get("B4").put_value(10.4) | |
| worksheet.cells.get("B5").put_value(7.9) | |
| worksheet.cells.get("B6").put_value(4.1) | |
| worksheet.cells.get("B7").put_value(3.5) | |
| worksheet.cells.get("B8").put_value(5.7) | |
| worksheet.cells.get("B9").put_value(3) | |
| worksheet.cells.get("B10").put_value(14.7) | |
| worksheet.cells.get("B11").put_value(3.6) | |
| worksheet.cells.get("B12").put_value(2.8) | |
| worksheet.cells.get("B13").put_value(7.8) | |
| worksheet.cells.get("B14").put_value(2.4) | |
| worksheet.cells.get("B15").put_value(1.8) | |
| worksheet.cells.get("B16").put_value(10.1) | |
| # Create a pie chart and add it to the collection of charts | |
| id = worksheet.charts.add(ChartType.PIE, 3, 3, 23, 13) | |
| # Access newly created Chart instance | |
| chart = worksheet.charts[id] | |
| # Set series data range | |
| chart.n_series.add("B1:B16", True) | |
| # Set category data range | |
| chart.n_series.category_data = "A1:A16" | |
| # Turn off legend | |
| chart.show_legend = False | |
| # Access data labels | |
| dataLabels = chart.n_series[0].data_labels | |
| # Turn on category names | |
| dataLabels.show_category_name = True | |
| # Turn on percentage format | |
| dataLabels.show_percentage = True | |
| # Set position | |
| dataLabels.position = LabelPositionType.OUTSIDE_END | |
| # Set separator | |
| dataLabels.separator_type = DataLabelsSeparatorType.COMMA | |
| # Turn on leader lines | |
| chart.n_series[0].has_leader_lines = True | |
| # Calculete chart | |
| chart.calculate() | |
| # You need to move DataLabels a little leftward or rightward depending on their position to show leader lines | |
| DELTA = 100 | |
| for i in range(chart.n_series[0].points.count): | |
| X = chart.n_series[0].points[i].data_labels.x | |
| # If it is greater than 2000, then move the X position a little right otherwise move the X position a little left | |
| if X > 2000: | |
| chart.n_series[0].points[i].data_labels.x = X + DELTA | |
| else: | |
| chart.n_series[0].points[i].data_labels.x = X - DELTA |
Наконец, следующий код сохраняет диаграмму в формате изображения и книгу в формате XLSX.
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| from aspose.cells import FileFormatType, Workbook | |
| from aspose.cells.charts import ChartType, DataLabelsSeparatorType, LabelPositionType | |
| from aspose.cells.drawing import ImageType | |
| from aspose.cells.rendering import ImageOrPrintOptions | |
| # For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET | |
| # Create an instance of Workbook in XLSX format | |
| workbook = Workbook(FileFormatType.XLSX) | |
| # Access the first worksheet | |
| worksheet = workbook.worksheets[0] | |
| # Add two columns of data | |
| worksheet.cells.get("A1").put_value("Retail") | |
| worksheet.cells.get("A2").put_value("Services") | |
| worksheet.cells.get("A3").put_value("Info & Communication") | |
| worksheet.cells.get("A4").put_value("Transport Equip") | |
| worksheet.cells.get("A5").put_value("Construction") | |
| worksheet.cells.get("A6").put_value("Other Products") | |
| worksheet.cells.get("A7").put_value("Wholesale") | |
| worksheet.cells.get("A8").put_value("Land Transport") | |
| worksheet.cells.get("A9").put_value("Air Transport") | |
| worksheet.cells.get("A10").put_value("Electric Appliances") | |
| worksheet.cells.get("A11").put_value("Securities") | |
| worksheet.cells.get("A12").put_value("Textiles & Apparel") | |
| worksheet.cells.get("A13").put_value("Machinery") | |
| worksheet.cells.get("A14").put_value("Metal Products") | |
| worksheet.cells.get("A15").put_value("Cash") | |
| worksheet.cells.get("A16").put_value("Banks") | |
| worksheet.cells.get("B1").put_value(10.4) | |
| worksheet.cells.get("B2").put_value(5.2) | |
| worksheet.cells.get("B3").put_value(6.4) | |
| worksheet.cells.get("B4").put_value(10.4) | |
| worksheet.cells.get("B5").put_value(7.9) | |
| worksheet.cells.get("B6").put_value(4.1) | |
| worksheet.cells.get("B7").put_value(3.5) | |
| worksheet.cells.get("B8").put_value(5.7) | |
| worksheet.cells.get("B9").put_value(3) | |
| worksheet.cells.get("B10").put_value(14.7) | |
| worksheet.cells.get("B11").put_value(3.6) | |
| worksheet.cells.get("B12").put_value(2.8) | |
| worksheet.cells.get("B13").put_value(7.8) | |
| worksheet.cells.get("B14").put_value(2.4) | |
| worksheet.cells.get("B15").put_value(1.8) | |
| worksheet.cells.get("B16").put_value(10.1) | |
| # Create a pie chart and add it to the collection of charts | |
| id = worksheet.charts.add(ChartType.PIE, 3, 3, 23, 13) | |
| # Access newly created Chart instance | |
| chart = worksheet.charts[id] | |
| # Set series data range | |
| chart.n_series.add("B1:B16", True) | |
| # Set category data range | |
| chart.n_series.category_data = "A1:A16" | |
| # Turn off legend | |
| chart.show_legend = False | |
| # Access data labels | |
| dataLabels = chart.n_series[0].data_labels | |
| # Turn on category names | |
| dataLabels.show_category_name = True | |
| # Turn on percentage format | |
| dataLabels.show_percentage = True | |
| # Set position | |
| dataLabels.position = LabelPositionType.OUTSIDE_END | |
| # Set separator | |
| dataLabels.separator_type = DataLabelsSeparatorType.COMMA | |
| # In order to save the chart image, create an instance of ImageOrPrintOptions | |
| anOption = ImageOrPrintOptions() | |
| # Set image format | |
| anOption.image_type = ImageType.PNG | |
| # Set resolution | |
| anOption.horizontal_resolution = 200 | |
| anOption.vertical_resolution = 200 | |
| # Render chart to image | |
| chart.to_image(dataDir + "output_out.png", anOption) | |
| # Save the workbook to see chart inside the Excel | |
| workbook.save(dataDir + "output_out.xlsx") |
| Результирующая круговая диаграмма |
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