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StretchRenderer Class

  • StretchRenderer
  • class Esri::ArcGISRuntime::StretchRenderer

    A stretch renderer that can help visualize raster data using RasterLayer. More...

    Header: #include <StretchRenderer>
    Since: Esri::ArcGISRuntime 100.0
    Inherits: Esri::ArcGISRuntime::BaseStretchRenderer

    This class was introduced in Esri::ArcGISRuntime 100.0.

    Public Functions

    StretchRenderer(const Esri::ArcGISRuntime::StretchParameters &stretchParameters, const QList<double> &gammas, bool estimateStats, Esri::ArcGISRuntime::ColorRamp *colorRamp, QObject *parent = nullptr)
    StretchRenderer(const Esri::ArcGISRuntime::StretchParameters &stretchParameters, const QList<double> &gammas, bool estimateStats, Esri::ArcGISRuntime::PresetColorRampType presetColorRampType, QObject *parent = nullptr)
    StretchRenderer(QObject *parent = nullptr)
    virtual ~StretchRenderer() override
    Esri::ArcGISRuntime::ColorRamp *colorRamp() const

    Detailed Description

    A stretch renderer displays continuous raster cell values across a gradual ramp of colors. Use it to draw a single band of continuous data. The stretch renderer works well when you have a large range of values to display, such as in imagery, aerial photographs, or elevation models.

    Stretching improves the appearance of the raster data by spreading its pixel values along a histogram whose minimum and maximum values are defined by the raster's bit depth. For example, an 8-bit raster dataset will be stretched along a histogram from 0 to 255.

    Member Function Documentation

    StretchRenderer::StretchRenderer(const Esri::ArcGISRuntime::StretchParameters &stretchParameters, const QList<double> &gammas, bool estimateStats, Esri::ArcGISRuntime::ColorRamp *colorRamp, QObject *parent = nullptr)

    Constructor that takes the following parameters:

    • stretchParameters - The StretchParameters.
    • gammas - The list of gamma values.
    • estimateStats - Whether to estimate statistics if they exist.
    • colorRamp - The ColorRamp object.
    • parent - The optional parent.

    StretchRenderer::StretchRenderer(const Esri::ArcGISRuntime::StretchParameters &stretchParameters, const QList<double> &gammas, bool estimateStats, Esri::ArcGISRuntime::PresetColorRampType presetColorRampType, QObject *parent = nullptr)

    Constructor that takes the following parameters:

    • stretchParameters - The StretchParameters.
    • gammas - The list of gamma values.
    • estimateStats - Whether to estimate statistics if they exist.
    • presetColorRampType - The type of color ramp.
    • parent - An optional parent.

    StretchRenderer::StretchRenderer(QObject *parent = nullptr)

    Default constructor with an optional parent.

    Constructs a stretch renderer with a stretchType of StretchType::None.

    [override virtual] StretchRenderer::~StretchRenderer()

    Destructor.

    Esri::ArcGISRuntime::ColorRamp *StretchRenderer::colorRamp() const

    The ColorRamp object used to create this StretchRenderer.

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