Class RotatedPole
Object
Formattable
AbstractMathTransform
MapProjection
RotatedPole
- All Implemented Interfaces:
Serializable
,MathTransform
,MathTransform2D
Rotated Pole Transformation for rotated spherical coordinates ("Rotated Pole Coordinates"), commonly used in
numerical weather forecasting models.
Key parameters: latitudeOfOrigin
, centralMeridian
- latitude/longitude of the rotated origin.
Based on the code provided by Jürgen Seib (Deutscher Wetterdienst), adopted to follow "+proj=ob_tran" behaviour.
For examples see "RotatedPole.txt" file in tests directory
- Since:
- 15.0
- Author:
- Maciej Filocha (ICM UW)
- See Also:
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic class
The math transform provider for an Rotated Pole projection.Nested classes/interfaces inherited from class MapProjection
MapProjection.AbstractProvider
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Field Summary
Fields inherited from class MapProjection
centralMeridian, en0, en1, en2, en3, en4, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, invertible, isSpherical, latitudeOfOrigin, LOGGER, scaleFactor, semiMajor, semiMinor, SKIP_SANITY_CHECKS
Fields inherited from class Formattable
SINGLE_LINE
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Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
RotatedPole
(ParameterValueGroup parameters) Constructs a rotated latitude/longitude projection. -
Method Summary
Modifier and TypeMethodDescriptionReturns the parameter descriptors for this map projection.protected Point2D
inverseTransformNormalized
(double x, double y, Point2D ptDst) Transforms the specified (x,y) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).protected Point2D
transformNormalized
(double x, double y, Point2D ptDst) Transforms the specified (λ,φ) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).Methods inherited from class MapProjection
checkReciprocal, equals, getParameterValues, getSourceDimensions, getTargetDimensions, getToleranceForAssertions, hashCode, inv_mlfn, inverse, mlfn, orthodromicDistance, resetWarnings, transform, transform, transform
Methods inherited from class AbstractMathTransform
createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, isIdentity, needCopy, normalizeAngle, rollLongitude, transform, transform, transform
Methods inherited from class Formattable
cleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKT
Methods inherited from interface MathTransform
derivative, isIdentity, toWKT, transform, transform, transform
Methods inherited from interface MathTransform2D
createTransformedShape, derivative
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Constructor Details
-
RotatedPole
Constructs a rotated latitude/longitude projection.- Parameters:
parameters
- The group of parameter values.- Throws:
ParameterNotFoundException
- if a required parameter was not found.
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Method Details
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transformNormalized
Transforms the specified (λ,φ) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).- Specified by:
transformNormalized
in classMapProjection
- Parameters:
x
- The longitude of the coordinate, in radians.y
- The latitude of the coordinate, in radians.ptDst
- the specified coordinate point that stores the result of transformingptSrc
, ornull
. Ordinates will be in a dimensionless unit, as a linear distance on a unit sphere or ellipse.- Returns:
- the coordinate point after transforming (
lambda
,phi
) and storing the result inptDst
. - Throws:
ProjectionException
- if the point can't be transformed.
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inverseTransformNormalized
protected Point2D inverseTransformNormalized(double x, double y, Point2D ptDst) throws ProjectionException Transforms the specified (x,y) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).- Specified by:
inverseTransformNormalized
in classMapProjection
- Parameters:
x
- The easting of the coordinate, linear distance on a unit sphere or ellipse.y
- The northing of the coordinate, linear distance on a unit sphere or ellipse.ptDst
- the specified coordinate point that stores the result of transformingptSrc
, ornull
. Ordinates will be in radians.- Returns:
- the coordinate point after transforming
x
,y
and storing the result inptDst
. - Throws:
ProjectionException
- if the point can't be transformed.
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getParameterDescriptors
Returns the parameter descriptors for this map projection. This is used for a providing a default implementation ofMapProjection.getParameterValues()
, as well as arguments checking.- Specified by:
getParameterDescriptors
in classMapProjection
- Returns:
- The parameter descriptors for this math transform, or
null
. - See Also:
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