Other API Samples

Live SpreadsheetGear API Samples

Charting Bubble Chart

Create a bubble chart representing three sets of data values.

// Create a new workbook and get a reference to the active worksheet, window info, 
// and cells.
SpreadsheetGear.IWorkbook workbook =  
SpreadsheetGear.IWorksheet worksheet = workbook.ActiveWorksheet;
SpreadsheetGear.IWorksheetWindowInfo windowInfo = worksheet.WindowInfo;
SpreadsheetGear.IRange cells = worksheet.Cells;

// Add a chart to the worksheet's shape collection.
// NOTE: Calculate the coordinates of the chart by converting row and column
//       coordinates to points.  Use fractional row and column values to get 
//       coordinates anywhere in between row and column boundaries.
double left = windowInfo.ColumnToPoints(0.15);
double top = windowInfo.RowToPoints(0.5);
double right = windowInfo.ColumnToPoints(5.85);
double bottom = windowInfo.RowToPoints(13.5);
SpreadsheetGear.Charts.IChart chart =
    worksheet.Shapes.AddChart(left, top, right - left, bottom - top).Chart;

// Set the chart type to bubble.
chart.ChartType = SpreadsheetGear.Charts.ChartType.Bubble;

// Get the chart's source data range.
SpreadsheetGear.IRange source = cells["G3:J6"];

// for each row in the data range...
for (int row = 0; row < source.RowCount; row++)
    // Add a series to the chart's series collection.
    SpreadsheetGear.Charts.ISeries series = chart.SeriesCollection.Add();

    // Set the series name, x values, y values, and bubble size values.
    series.Name = "=" + source[row, 0].Address;
    series.XValues = source[row, 1];
    series.Values = source[row, 2];
    series.BubbleSizes = source[row, 3];

// Get a reference to the x value axis, add a title, and link the title to a cell.
SpreadsheetGear.Charts.IAxis xValueAxis =
xValueAxis.HasTitle = true;
xValueAxis.AxisTitle.Text = "=H2";

// Get a reference to the y value axis, add a title, and link the title to a cell.
SpreadsheetGear.Charts.IAxis yValueAxis =
yValueAxis.HasTitle = true;
yValueAxis.AxisTitle.Text = "=I2";

// Add a chart title and change the font size.
chart.HasTitle = true;
chart.ChartTitle.Text = "Estimated Return on Investment";
chart.ChartTitle.Font.Size = 12;
Run This Sample
Render Image

Generate an image representation of the results of this sample, which uses the SpreadsheetGear.Drawing.Image class to convert ranges, charts and shapes to images.

Download File

Download an Excel Open XML Workbook (*.xlsx) file with the results of this sample.

Supporting Files

The following files are utilized by this sample: