DataSet.GetFloatValuesAt Methods

Gets a number of float raster values.

Overload List

	Name	Description
Public method	GetFloatValuesAt(PointCollection points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	GetFloatValuesAt(PointCollection points, RasterFilter rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.
Public method	GetFloatValuesAt(IEnumerable< Point > points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	GetFloatValuesAt(IEnumerable< Point > points, RasterFilter rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.

GetFloatValuesAt(PointCollection points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

public FloatCollection GetFloatValuesAt (
    PointCollection points
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of System.Single (not available in C#) elements.
The float raster values at the specified positions.

Remarks

This method is similar to GetFloatValueAt, except that it retrieves multiple raster values in one call, and if several rasters overlap a position, you are not guaranteed to get the highest well-defined raster value for that position.

Unlike GetFloatValueAt, this method does not throw exceptions if no data is found for a specified coordinate. Instead the returned value for that particular point is set to a value less than −1.0e38. Valid values are still returned for the other positions.

Example

// Get the float values for the given coordinates
public static FloatCollection GetFloatValuesAt(
    DataSet dataSet, 
    IEnumerable<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.Wgs84LongLat.ProjectTo(dataSet.Crs, wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // GetFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.GetFloatValuesAt(projectedPointCollection);
}

GetFloatValuesAt(PointCollection points, RasterFilter rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

public FloatCollection GetFloatValuesAt (
    PointCollection points,
    RasterFilter rasterFilter
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of System.Single (not available in C#) elements.
The float raster values at the specified positions.

Remarks

This method is similar to GetFloatValueAt, except that it retrieves multiple raster values in one call. Also, if several rasters overlap a position, you are not always guaranteed to get the highest well-defined raster value for that position; this is guaranteed only if bicubic interpolation is used.

Example

// Get the float values for the given positions, using bicubic interpolation.
public static FloatCollection GetFloatValuesBicubicAt(
    DataSet dataSet, 
    IEnumerable<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.Wgs84LongLat.ProjectTo(dataSet.Crs, wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // GetFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.GetFloatValuesAt(projectedPointCollection, RasterFilter.Bicubic);
}

GetFloatValuesAt(IEnumerable< Point > points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

public FloatCollection GetFloatValuesAt (
    IEnumerable< Point > points
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of System.Single (not available in C#) elements.
The float raster values at the specified positions.

Remarks

GetFloatValuesAt(IEnumerable< Point > points, RasterFilter rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

public FloatCollection GetFloatValuesAt (
    IEnumerable< Point > points,
    RasterFilter rasterFilter
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of System.Single (not available in C#) elements.
The float raster values at the specified positions.

Remarks

Platforms

Windows, Linux, Android

DataSet::getFloatValuesAt Methods

Gets a number of float raster values.

Overload List

	Name	Description
Public method	getFloatValuesAt(const PointCollectionPtr& points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast)	Gets a number of float raster values at all positions in a range of positions, using bilinear interpolation if the dataset is continuous.
Public method	getFloatValuesAt(const PointCollectionPtr& points, RasterFilter rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.
Public method	getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast, RasterFilter rasterFilter)	Gets a number of float raster values at all positions in a range of positions, using a given interpolation method.

getFloatValuesAt(const PointCollectionPtr& points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

C++

public:
FloatCollectionPtr getFloatValuesAt (
    const PointCollectionPtr& points
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of float (not available in C++) elements.
The float raster values at the specified positions.

Remarks

This method is similar to getFloatValueAt, except that it retrieves multiple raster values in one call, and if several rasters overlap a position, you are not guaranteed to get the highest well-defined raster value for that position.

Unlike getFloatValueAt, this method does not throw exceptions if no data is found for a specified coordinate. Instead the returned value for that particular point is set to a value less than −1.0e38. Valid values are still returned for the other positions.

Example

C++

// Get the float values for the given coordinates
static FloatCollectionPtr getFloatValuesAt(
    DataSetPtr dataSet, 
    PointCollectionPtr wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollectionPtr projectedPointCollection = 
        Crs::wgs84LongLat()->projectTo(dataSet->crs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet->getFloatValuesAt(projectedPointCollection);

}

getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast)

Gets a number of float raster values at all positions in a range of positions, using bilinear interpolation if the dataset is continuous.

Syntax

C++

public:
template< class Iter >
FloatCollectionPtr getFloatValuesAt (
    const Iter& pointsFirst,
    const Iter& pointsLast
)

Parameters

pointsFirst

Type: Iter
Position of the first point in the range of points to get values at.

pointsLast

Type: Iter
Position of the first point beyond the range of points to get values at.

Return Value

Type: A collection of float (not available in C++) elements.
The float raster values at the specified positions.

Remarks

getFloatValuesAt(const PointCollectionPtr& points, RasterFilter rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

C++

public:
FloatCollectionPtr getFloatValuesAt (
    const PointCollectionPtr& points,
    RasterFilter rasterFilter
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of float (not available in C++) elements.
The float raster values at the specified positions.

Remarks

This method is similar to getFloatValueAt, except that it retrieves multiple raster values in one call. Also, if several rasters overlap a position, you are not always guaranteed to get the highest well-defined raster value for that position; this is guaranteed only if bicubic interpolation is used.

Example

C++

// Get the float values for the given positions, using bicubic interpolation.
static FloatCollectionPtr getFloatValuesBicubicAt(
    DataSetPtr dataSet, 
    PointCollectionPtr wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollectionPtr projectedPointCollection = 
        Crs::wgs84LongLat()->projectTo(dataSet->crs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet->getFloatValuesAt(projectedPointCollection, RasterFilterBicubic);

}

getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast, RasterFilter rasterFilter)

Gets a number of float raster values at all positions in a range of positions, using a given interpolation method.

Syntax

C++

public:
template< class Iter >
FloatCollectionPtr getFloatValuesAt (
    const Iter& pointsFirst,
    const Iter& pointsLast,
    RasterFilter rasterFilter
)

Parameters

pointsFirst

Type: Iter
Position of the first point in the range of points to get values at.

pointsLast

Type: Iter
Position of the first point beyond the range of points to get values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of float (not available in C++) elements.
The float raster values at the specified positions.

Remarks

Platforms

Windows, Linux, Android

DataSet.getFloatValuesAt Methods

Gets a number of float raster values.

Overload List

	Name	Description
Public method	getFloatValuesAt(PointCollection points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	getFloatValuesAt(PointCollection points, RasterFilter rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.
Public method	getFloatValuesAt(java.util.Collection< Point > points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	getFloatValuesAt(java.util.Collection< Point > points, RasterFilter rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.

getFloatValuesAt(PointCollection points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

Java

public final FloatCollection getFloatValuesAt (
    PointCollection points
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of float (not available in Java) elements.
The float raster values at the specified positions.

Remarks

Example

Java

// Get the float values for the given coordinates
public static FloatCollection getFloatValuesAt(
    DataSet dataSet, 
    java.util.Collection<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.getWgs84LongLat().projectTo(dataSet.getCrs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.getFloatValuesAt(projectedPointCollection);
}

getFloatValuesAt(PointCollection points, RasterFilter rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

Java

public final FloatCollection getFloatValuesAt (
    PointCollection points,
    RasterFilter rasterFilter
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of float (not available in Java) elements.
The float raster values at the specified positions.

Remarks

Example

Java

// Get the float values for the given positions, using bicubic interpolation.
public static FloatCollection getFloatValuesBicubicAt(
    DataSet dataSet, 
    java.util.Collection<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.getWgs84LongLat().projectTo(dataSet.getCrs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.getFloatValuesAt(projectedPointCollection, RasterFilter.BICUBIC);
}

getFloatValuesAt(java.util.Collection< Point > points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

Java

public final FloatCollection getFloatValuesAt (
    java.util.Collection< Point > points
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of float (not available in Java) elements.
The float raster values at the specified positions.

Remarks

Example

Java

// Get the float values for the given coordinates
public static FloatCollection getFloatValuesAt(
    DataSet dataSet, 
    java.util.Collection<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.getWgs84LongLat().projectTo(dataSet.getCrs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.getFloatValuesAt(projectedPointCollection);
}

getFloatValuesAt(java.util.Collection< Point > points, RasterFilter rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

Java

public final FloatCollection getFloatValuesAt (
    java.util.Collection< Point > points,
    RasterFilter rasterFilter
)

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of float (not available in Java) elements.
The float raster values at the specified positions.

Remarks

Example

Java

// Get the float values for the given positions, using bicubic interpolation.
public static FloatCollection getFloatValuesBicubicAt(
    DataSet dataSet, 
    java.util.Collection<Point> wgs84LongLatPointCollection)
{
    // Project the coordinates to the Crs of the DataSet
    PointCollection projectedPointCollection = 
        Crs.getWgs84LongLat().projectTo(dataSet.getCrs(), wgs84LongLatPointCollection);

    // Get the float values at the given coordinates and return it
    // getFloatValuesAt does not throw exceptions if no data is found for a specified coordinate. 
    // Instead the returned value for that particular point is set to a value less than -1.0e38. 
    // Valid values are still returned for the other coordinates
    return dataSet.getFloatValuesAt(projectedPointCollection, RasterFilter.BICUBIC);
}

Platforms

Windows, Linux, Android

DataSet.getFloatValuesAt Methods

Gets a number of float raster values.

Overload List

	Name	Description
Public method	getFloatValuesAt(points)	Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.
Public method	getFloatValuesAt(points, rasterFilter)	Gets a number of float raster values at the specified positions, using a given interpolation method.

getFloatValuesAt(points)

Gets a number of float raster values at the specified positions, using bilinear interpolation if the dataset is continuous.

Syntax

Python

FloatCollection getFloatValuesAt ( points )

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

Return Value

Type: A collection of float (not available in Python) elements.
The float raster values at the specified positions.

Remarks

Example

Python

# This example is not available in the selected language.

getFloatValuesAt(points, rasterFilter)

Gets a number of float raster values at the specified positions, using a given interpolation method.

Syntax

Python

FloatCollection getFloatValuesAt ( points, rasterFilter )

Parameters

points

Type: A collection of Point elements.
The positions, expressed in the coordinate reference system of the dataset, to get the values at.

rasterFilter

Type: RasterFilter
The interpolation method: either nearest-neighbor, bilinear or bicubic.

Return Value

Type: A collection of float (not available in Python) elements.
The float raster values at the specified positions.

Remarks

Example

Python

# This example is not available in the selected language.

Platforms

Windows, Linux, Android

DataSet.GetFloatValuesAt Methods

In this article

Overload List

GetFloatValuesAt(PointCollection points)

Syntax

Parameters

Return Value

Remarks

Example

GetFloatValuesAt(PointCollection points, RasterFilter rasterFilter)

Syntax

Parameters

Return Value

Remarks

Example

GetFloatValuesAt(IEnumerable< Point > points)

Syntax

Parameters

Return Value

Remarks

GetFloatValuesAt(IEnumerable< Point > points, RasterFilter rasterFilter)

Syntax

Parameters

Return Value

Remarks

Platforms

See Also

Reference

DataSet::getFloatValuesAt Methods

In this article

Overload List

getFloatValuesAt(const PointCollectionPtr& points)

Syntax

Parameters

Return Value

Remarks

Example

getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast)

Syntax

Parameters

Return Value

Remarks

getFloatValuesAt(const PointCollectionPtr& points, RasterFilter rasterFilter)

Syntax

Parameters

Return Value

Remarks

Example

getFloatValuesAt(const Iter& pointsFirst, const Iter& pointsLast, RasterFilter rasterFilter)

Syntax

Parameters

Return Value

Remarks

Platforms

See Also

Reference

DataSet.getFloatValuesAt Methods

In this article

Overload List

getFloatValuesAt(PointCollection points)

Syntax

Parameters

Return Value

Remarks

Example

getFloatValuesAt(PointCollection points, RasterFilter rasterFilter)

Syntax

Parameters

Return Value

Remarks

Example

getFloatValuesAt(java.util.Collection< Point > points)

Syntax

Parameters

Return Value

Remarks

Example

getFloatValuesAt(java.util.Collection< Point > points, RasterFilter rasterFilter)

Syntax

Parameters