How to set category axis

Possible Usage Scenarios

After you create a chart in a worksheet, then you can set category axis for it. In this article, we will show you how to set category axis for Excel chart, using Aspose.Cells for Python via .NET with sample code.

The steps in sample code

1. Create a new workbook.

2. Create a new chart in the first worksheet.

3. Add some values to cells in the first worksheet.

4. Now you can set the category axis, there are two ways: using cell data, or using strings directly, both of which are shown in the sample code.

5. Set value axis, save the workbook to view the result.

Sample Code

from aspose.cells import Workbook
from aspose.cells.charts import ChartType, LegendPositionType

# How to Set Category Axis
# Your local test path
path = r""
# Create a new workbook
workbook = Workbook()
worksheet = workbook.worksheets[0]
worksheet.name = "CHART"
#  Add a chart to the worksheet
chartIndex = worksheet.charts.add(ChartType.COLUMN, 8, 0, 20, 10)
chart = worksheet.charts[chartIndex]
# Add some values to cells
worksheet.cells.get("A1").put_value("Sales")
worksheet.cells.get("A2").put_value(100)
worksheet.cells.get("A3").put_value(150)
worksheet.cells.get("A4").put_value(130)
worksheet.cells.get("A5").put_value(160)
worksheet.cells.get("A6").put_value(150)
worksheet.cells.get("B1").put_value("Days")
worksheet.cells.get("B2").put_value(1)
worksheet.cells.get("B3").put_value(2)
worksheet.cells.get("B4").put_value(3)
worksheet.cells.get("B5").put_value(4)
worksheet.cells.get("B6").put_value(5)
# Some values in string
Sales = "100,150,130,160,150"
Days = "1,2,3,4,5"
# Set Category Axis Data with string
chart.n_series.category_data = "{"  + Days + "}"
# Or you can set Category Axis Data with data in cells, try it!
# chart.NSeries.CategoryData = "B2:B6";
# Add Series to the chart
chart.n_series.add("Demand1", True)
# Set value axis with string
chart.n_series[0].values = "{"  + Sales + "}"
chart.n_series.add("Demand2", True)
# Set value axis with data in cells
chart.n_series[1].values = "A2:A6"
# Set some Category Axis properties
chart.category_axis.tick_labels.rotation_angle = 45
chart.category_axis.tick_labels.font.size = 8
chart.legend.position = LegendPositionType.BOTTOM
# Save the workbook to view the result file
workbook.save(path + "Output.xlsx")