Aspose::Words::Drawing::Charts::ChartDataPoint class

ChartDataPoint class

Allows to specify formatting of a single data point on the chart. To learn more, visit the Working with Charts documentation article.

class ChartDataPoint : public Aspose::Words::Drawing::Charts::IChartDataPoint,
                       public Aspose::Words::Drawing::Charts::Core::IChartFormatSource

Methods

MethodDescription
ClearFormat()Clears format of this data point. The properties are set to the default values defined in the parent series.
get_Bubble3D() overrideSpecifies whether the bubbles in Bubble chart should have a 3-D effect applied to them.
get_Explosion() overrideSpecifies the amount the data point shall be moved from the center of the pie. Can be negative, negative means that property is not set and no explosion should be applied. Applies only to Pie charts.
get_Format()Provides access to fill and line formatting of this data point.
get_Index()Index of the data point this object applies formatting to.
get_InvertIfNegative() overrideSpecifies whether the parent element shall inverts its colors if the value is negative.
get_Marker() overrideSpecifies chart data marker.
GetType() const override
Is(const System::TypeInfo&) const override
set_Bubble3D(bool) overrideSpecifies whether the bubbles in Bubble chart should have a 3-D effect applied to them.
set_Explosion(int32_t) overrideSpecifies the amount the data point shall be moved from the center of the pie. Can be negative, negative means that property is not set and no explosion should be applied. Applies only to Pie charts.
set_InvertIfNegative(bool) overrideSpecifies whether the parent element shall inverts its colors if the value is negative.
static Type()

Examples

Shows how to work with data points on a line chart.

void ChartDataPoint_()
{
    auto doc = MakeObject<Document>();
    auto builder = MakeObject<DocumentBuilder>(doc);

    SharedPtr<Shape> shape = builder->InsertChart(ChartType::Line, 500, 350);
    SharedPtr<Chart> chart = shape->get_Chart();

    ASSERT_EQ(3, chart->get_Series()->get_Count());
    ASSERT_EQ(u"Series 1", chart->get_Series()->idx_get(0)->get_Name());
    ASSERT_EQ(u"Series 2", chart->get_Series()->idx_get(1)->get_Name());
    ASSERT_EQ(u"Series 3", chart->get_Series()->idx_get(2)->get_Name());

    // Emphasize the chart's data points by making them appear as diamond shapes.
    for (const auto& series : System::IterateOver(chart->get_Series()))
    {
        ApplyDataPoints(series, 4, MarkerSymbol::Diamond, 15);
    }

    // Smooth out the line that represents the first data series.
    chart->get_Series()->idx_get(0)->set_Smooth(true);

    // Verify that data points for the first series will not invert their colors if the value is negative.
    {
        SharedPtr<System::Collections::Generic::IEnumerator<SharedPtr<ChartDataPoint>>> enumerator =
            chart->get_Series()->idx_get(0)->get_DataPoints()->GetEnumerator();
        while (enumerator->MoveNext())
        {
            ASSERT_FALSE(enumerator->get_Current()->get_InvertIfNegative());
        }
    }

    // For a cleaner looking graph, we can clear format individually.
    chart->get_Series()->idx_get(1)->get_DataPoints()->idx_get(2)->ClearFormat();

    // We can also strip an entire series of data points at once.
    chart->get_Series()->idx_get(2)->get_DataPoints()->ClearFormat();

    doc->Save(ArtifactsDir + u"Charts.ChartDataPoint.docx");
}

static void ApplyDataPoints(SharedPtr<ChartSeries> series, int dataPointsCount, MarkerSymbol markerSymbol, int dataPointSize)
{
    for (int i = 0; i < dataPointsCount; i++)
    {
        SharedPtr<ChartDataPoint> point = series->get_DataPoints()->idx_get(i);
        point->get_Marker()->set_Symbol(markerSymbol);
        point->get_Marker()->set_Size(dataPointSize);

        ASSERT_EQ(i, point->get_Index());
    }
}

See Also

Aspose::Words::Drawing::Charts::ChartDataLabelCollection class Aspose::Words::Drawing::Charts::ChartDataPointCollection class