Scatter Chart SpreadsheetGear API Sample

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

// Get the chart's source data range and add some sample data.
cells["G2:J30"].Formula = "=INT(RAND() * 500) + 150"; ;

// 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;

// Add a series and link x and y values to the source data range.
SpreadsheetGear.Charts.ISeries series1 = chart.SeriesCollection.Add();
series1.XValues = "=G2:G30";
series1.Values = "=H2:H30";

// Add a second series and link x an y values to the source data range.
SpreadsheetGear.Charts.ISeries series2 = chart.SeriesCollection.Add();
series2.XValues = "=I2:I30";
series2.Values = "=J2:J30";

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

// Get a reference to the x value axis, add a title, and link the title to a cell.
SpreadsheetGear.Charts.IAxis xValueAxis =
    chart.Axes[SpreadsheetGear.Charts.AxisType.Category];
xValueAxis.HasTitle = true;
xValueAxis.AxisTitle.Text = "X Value Axis";

// Get a reference to the y value axis, add a title, and link the title to a cell.
SpreadsheetGear.Charts.IAxis yValueAxis =
    chart.Axes[SpreadsheetGear.Charts.AxisType.Value];
yValueAxis.HasTitle = true;
yValueAxis.AxisTitle.Text = "Y Value Axis";

// Delete the major gridlines from the y value axis.
yValueAxis.HasMajorGridlines = false;

// Delete the legend.
chart.HasLegend = false;

// Add a chart title and change the font size.
chart.HasTitle = true;
chart.ChartTitle.Text = "XY Scatter Plot";
chart.ChartTitle.Font.Size = 12;