FormattableObject
AbstractMathTransform
AbstractMathTransform2D
UnitaryProjection
AlbersEqualArea
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
Object
@Immutable public class AlbersEqualArea
Albers Equal Area projection (EPSG code 9822). See the Albers Equal-Area Conic projection on MathWorld for an overview. See any of the following providers for a list of programmatic parameters:
Description
This is a conic projection with parallels being unequally spaced arcs of concentric circles,
more closely spaced at north and south edges of the map. Meridians are equally spaced radii
of the same circles and intersect parallels at right angles. As the name implies, this
projection minimizes distortion in areas.
The "standard_parallel_2" parameter is optional and will be given the same value as
"standard_parallel_1" if not set (creating a 1 standard parallel projection).
References
PJ_aea.c, pj_fwd.c and pj_inv.c.
| referencing/geotk-referencing (download) | View source code for this class |
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from class UnitaryProjection |
|---|
UnitaryProjection.Parameters |
| Field Summary |
|---|
| Fields inherited from class UnitaryProjection |
|---|
excentricity, excentricitySquared |
| Fields inherited from class FormattableObject |
|---|
EPSG, GEOTIFF, INTERNAL, OGC, SINGLE_LINE |
| Constructor Summary | |
|---|---|
protected |
AlbersEqualArea(UnitaryProjection.Parameters parameters)
Constructs a new map projection from the supplied parameters. |
| Method Summary | |
|---|---|
static MathTransform2D |
create(ParameterDescriptorGroup descriptor,
ParameterValueGroup values)
Creates a Albers Equal Area projection from the given parameters. |
boolean |
equals(Object object,
ComparisonMode mode)
Compares the given object with this transform for equivalence. |
ParameterDescriptorGroup |
getParameterDescriptors()
Returns the parameter descriptors for this unitary projection. |
ParameterValueGroup |
getParameterValues()
Returns a copy of the parameter values for this projection. |
protected void |
inverseTransform(double[] srcPts,
int srcOff,
double[] dstPts,
int dstOff)
Transforms the specified (x,y) coordinates and stores the result in dstPts (angles in radians). |
Matrix |
transform(double[] srcPts,
int srcOff,
double[] dstPts,
int dstOff,
boolean derivate)
Converts the specified (λ,φ) coordinate (units in radians) and stores the result in dstPts (linear distance on a unit sphere). |
| Methods inherited from class UnitaryProjection |
|---|
computeHashCode, finish, getUnmarshalledParameters, inverse, resetWarnings, rollLongitude, unrollLongitude |
| Methods inherited from class AbstractMathTransform2D |
|---|
getSourceDimensions, getTargetDimensions, transform |
| Methods inherited from class AbstractMathTransform |
|---|
createTransformedShape, derivative, derivative, ensureNonNull, equals, formatWKT, getName, hashCode, isIdentity, rollLongitude, transform, transform, transform, transform, transform |
| Methods inherited from class FormattableObject |
|---|
getDefaultIndentation, print, setDefaultIndentation, toString, toWKT, toWKT, toWKT, toWKT |
| Methods inherited from class Object |
|---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Methods inherited from interface MathTransform2D |
|---|
createTransformedShape, derivative |
| Methods inherited from interface MathTransform |
|---|
derivative, isIdentity, toWKT, transform, transform, transform, transform, transform |
| Constructor Detail |
|---|
protected AlbersEqualArea(UnitaryProjection.Parameters parameters)
parameters - The parameters of the projection to be created.| Method Detail |
|---|
public static MathTransform2D create(ParameterDescriptorGroup descriptor,
ParameterValueGroup values)
AlbersEqualArea.PARAMETERS, but
is not restricted to. If a different descriptor is supplied, it is user's responsibility
to ensure that it is suitable to an Albers Equal Area projection.
descriptor - Typically AlbersEqualArea.PARAMETERS.values - The parameter values of the projection to create.
public ParameterDescriptorGroup getParameterDescriptors()
getParameterDescriptors in interface ParameterizedgetParameterDescriptors in class AbstractMathTransform2Dnull.OperationMethod.getParameters()public ParameterValueGroup getParameterValues()
getParameterValues in interface ParameterizedgetParameterValues in class UnitaryProjectionSingleOperation.getParameterValues()
public Matrix transform(double[] srcPts,
int srcOff,
double[] dstPts,
int dstOff,
boolean derivate)
throws ProjectionException
dstPts (linear distance on a unit sphere). In addition,
opportunistically computes the projection derivative if derivate is true.
transform in class UnitaryProjectionsrcPts - The array containing the source point coordinate, as (longitude,
latitude) angles in radians.srcOff - The offset of the point to be converted in the source array.dstPts - The array into which the converted point coordinate is returned (may be
the same than srcPts). Ordinates will be expressed in a dimensionless
unit, as a linear distance on a unit sphere or ellipse.dstOff - The offset of the location of the converted point that is
stored in the destination array.derivate - true for computing the derivative, or false if not needed.
null
if the derivate argument is false.
ProjectionException - if the point can't be converted.AbstractMathTransform.derivative(DirectPosition),
AbstractMathTransform.transform(DirectPosition, DirectPosition),
MathTransforms.derivativeAndTransform(MathTransform, double[], int, double[], int)
protected void inverseTransform(double[] srcPts,
int srcOff,
double[] dstPts,
int dstOff)
throws ProjectionException
dstPts (angles in radians).
inverseTransform in class UnitaryProjectionsrcPts - The array containing the source point coordinate, as linear distance
on a unit sphere or ellipse.srcOff - The offset of the point to be converted in the source array.dstPts - the array into which the converted point coordinate is returned (may be
the same than srcPts). Ordinates will be (longitude,
latitude) angles in radians.dstOff - The offset of the location of the converted point that is
stored in the destination array.
ProjectionException - if the point can't be converted.
public boolean equals(Object object,
ComparisonMode mode)
equals in interface LenientComparableequals in class UnitaryProjectionobject - The object to compare with this unitary projection for equivalence.mode - The strictness level of the comparison. Default to STRICT.
true if the given object is equivalent to this unitary projection.Utilities.deepEquals(Object, Object, ComparisonMode)
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||