如何制作xls图表?

时间:2017-02-19 15:48:07

标签: c++ excel xls

我正在尝试将应用程序数据导出为xls图表。

我正在使用SimpleXlsxWriter进行此操作 但我对这个lib有一些问题。

这是我使用这个lib

得到的
#include <Xlsx/Workbook.h>

int main()
{
    using namespace SimpleXlsx;

    CWorkbook book;
    CWorksheet &data = book.AddSheet("Data");

    std::vector<CellDataDbl> header = { 1, 3, 5, 6, 8 };
    std::vector<CellDataDbl> data1  = { 2, 6, 4, 8, 5 };
    std::vector<CellDataDbl> data2  = { 5, 3, 5, 2, 4 };

    data.AddRow(header);
    data.AddRow(data1);
    data.AddRow(data2);

    CChartsheet &chart = book.AddChart("Chart", CHART_BAR);
    chart.SetBarDirection(CChartsheet::BAR_DIR_VERTICAL);
    chart.SetBarGrouping(CChartsheet::BAR_GROUP_STACKED);
    chart.SetTableDataState(CChartsheet::TBL_DATA);
    chart.SetLegendPos(CChartsheet::EPosition::POS_TOP);

    CChartsheet::Series ser1;
    ser1.valAxisFrom = CellCoord(1, 0);
    ser1.valAxisTo   = CellCoord(1, data1.size() - 1);
    ser1.valSheet    = &data;
    ser1.title       = "Ser1";

    CChartsheet::Series ser2;
    ser2.valAxisFrom = CellCoord(2, 0);
    ser2.valAxisTo   = CellCoord(2, data2.size() - 1);
    ser2.valSheet    = &data;
    ser2.title       = "Ser2";

    chart.AddSeries(ser1);
    chart.AddSeries(ser2);

    book.Save("test.xls");
}

Test.png

我没有找到如何显示y轴,显示水平线,设置x轴值,将图表插入数据表等的方法。

这是我想要得到的结果 Test1.png

图书馆可以帮助我什么,或者我如何获得所需的结果?也许SimpleXlsxWriter可以做到这一点?

1 个答案:

答案 0 :(得分:1)

只需对代码进行一些修改,您就可以从SimpleXlsxWriter中获得所需内容。简言之:

  • 使用SimpleXlsxWriter格式保存.xlsx而非.xls
  • 将类别轴添加到您的某个系列中,并将其设置为第一个数据行
  • 使用BAR_GROUP_PERCENT_STACKED,因为您希望y轴处于%scale
  • 您可以控制在图表中添加系列的顺序,以便在底部表格中获得所需的订单

考虑此代码,建议的修改在注释中表示:

int main()
{
    using namespace SimpleXlsx;

    CWorkbook book;
    CWorksheet &data = book.AddSheet("Data");

    std::vector<CellDataDbl> header = { 1, 3, 5, 6, 8 };
    std::vector<CellDataDbl> data1  = { 2, 6, 4, 8, 5 };
    std::vector<CellDataDbl> data2  = { 5, 3, 5, 2, 4 };

    data.AddRow(header);
    data.AddRow(data1);
    data.AddRow(data2);

    CChartsheet &chart = book.AddChart("Chart", CHART_BAR);
    chart.SetBarDirection(CChartsheet::BAR_DIR_VERTICAL);
    chart.SetBarGrouping(CChartsheet::BAR_GROUP_PERCENT_STACKED); // <-- seems you want this format?
    chart.SetTableDataState(CChartsheet::TBL_DATA);
    chart.SetLegendPos(CChartsheet::EPosition::POS_TOP);

    chart.SetYAxisGrid(CChartsheet::EGridLines::GRID_MAJOR); // <-- to draw the horizontal lines 

    CChartsheet::Series ser1;
    ser1.valSheet    = &data;
    ser1.valAxisFrom = CellCoord(1, 0);
    ser1.valAxisTo   = CellCoord(1, data1.size() - 1);
    ser1.title       = "Ser1";

    // Now add a category axis from your the first row of the data sheet
    ser1.catAxisFrom = CellCoord(0, 0);
    ser1.catAxisTo = CellCoord(0, data1.size() - 1);
    ser1.catSheet    = &data;

    CChartsheet::Series ser2;
    ser2.valSheet    = &data;
    ser2.valAxisFrom = CellCoord(2, 0);
    ser2.valAxisTo   = CellCoord(2, data2.size() - 1);
    ser2.title       = "Ser2";

    // insert the series in the order you want from the bottom up in the chart's table
    chart.AddSeries(ser2);   
    chart.AddSeries(ser1);

    book.Save("c:\\so\\test.xlsx"); // <-- Save as xlsx, not xls
}

Resulting Chart