Change bar chart axis scale using Aspose.Cells for C#

Question

I'm trying to set the axis scale for a bar chart using Aspose.Cells for C#. What I'm currently doing is essentially this:

var chart = worksheet.Charts.Add(ChartType.BarChart, 1, 1, 15, 15)
chart.NSeries.AddSeries("{.015,.03,.04}", true)
chart.NSeries.CategoryData = "{Apples,Oranges,Pears}"
chart.SeriesAxis.IsAutomaticMajorUnit = false;
chart.SeriesAxis.MajorUnit = .01;

However, when the spreadsheet renders the chart's major unit scale is automatically set to .1, so all the bars look disproportionately small. How can I change the scale of the series axis, so it has tick marks spaced apart by .01?

Answer 1

Please use the following code for your needs.

C#

//Set the major unit to 0.01
ch.ValueAxis.IsAutomaticMajorUnit = false;
ch.ValueAxis.MajorUnit = 0.01;

Here is the full sample code and the screenshot showing the output Excel file generated by the code for your reference.

C#

// Create empty workbook.
Workbook wb = new Workbook();

// Access first worksheet.
Worksheet worksheet = wb.Worksheets[0];

// Add Bar chart in first worksheet.
int idx = worksheet.Charts.Add(ChartType.Bar, 5, 2, 20, 10);

// Access Bar chart.
Chart ch = worksheet.Charts[0];

// Add two number series, true means they are vertical.
ch.NSeries.Add("{.015,.03,.04}", true);

// Set the category data to show on X-axis.
ch.NSeries.CategoryData = "{Apples,Oranges,Pears}";

// Set the name of first and second series.
ch.NSeries[0].Name = "Cricket";

//Set the major unit to 0.01
ch.ValueAxis.IsAutomaticMajorUnit = false;
ch.ValueAxis.MajorUnit = 0.01;

// Save the output in xlsx format.
wb.Save("outputBarChart.xlsx", SaveFormat.Xlsx);

Note: I am working as Developer Evangelist at Aspose