Package pygeodesy :: Module trf :: Class TRFXform

Class TRFXform

  object --+    
           |    
named._Named --+
               |
              TRFXform

A Terrestrial Reference Frame (TRF) converter between two reference frames observed at an epoch.

Instance Methods

__init__(self, refName1, refName2, epoch=None, xform=None, rates=None, name='')
New TRFXform TRF converter.

__add__(self, other)

__eq__(self, other)

__lt__(self, other)

__neg__(self)

__repr__(self)
Default repr(self).

__str__(self)
Default str(self).

__sub__(self, other)

inverse(self, name='')
Return this Xform {inversed}, refName1 and -2 swapped.

rename(self, name='')
Change this Xform's name.

toEpoch(self, epoch)
Convert this Xform to epoch, if needed.

toHelmert(self, factor=0.001)
Return the Helmert transform from this Xform scaled accordingly.

toRefFrame(self, point, datum=Datum(name='GRS80', ellipsoid=Ellipsoids.GRS80, transform=Tran..., **epoch_epoch2_name)
Convert an ellipsoidal point from this Xform's refName1 and epoch to this Xform's refName2 and epoch2 or epoch.

toRepr(self, **unused)
Return the represention of this Xform (str).

toStr(self, epoch=None, **unused)
Return this Xform as "refName1@epochxrefName2" (str).

toTransform(self, epoch=None, epoch2=None, inverse=False)
Combine this Xform observed at epoch into a Helmert TransformXform, optionally at epoch2 or epoch.

Inherited from named._Named: __imatmul__, __matmul__, __rmatmul__, attrs, classof, copy, dup, methodname, renamed, toStr2

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__

Class Variables
	refName2 = `''`
	refName1 = `''`
	xform = `None` hash(x)
	rates = `None` hash(x)

Properties
	epoch Class `property` with a `.name` attribute.
	epoched
	indirected
	inversed
	reframe1
	reframe2
Inherited from `named._Named`: `classname`, `classnaming`, `iteration`, `name`, `named`, `named2`, `named3`, `named4`, `sizeof` Inherited from `object`: `__class__`

Method Details

init (self, refName1, refName2, epoch=None, xform=None, rates=None, name='')
(Constructor)

New TRFXform TRF converter.

Arguments:

refName1 - Source reframe (str), converting from.
refName2 - Destination reframe (str), converting to.
epoch - Epoch, a fractional year (Epoch, scalar or str).
xform - Transform parameters at epoch (TRFXform7Tuple).
rates - Rate parameters (TRFXform7Tuple), like xform, but in units-per-year.
name - Optional name (str), overriding the default from method toStr.

Raises:

TRFError - Invalid refName1, refName2 or epoch.
TypeError - Invalid xform or rates.

Overrides: object.__init__

See Also: Functions trfXform, trfTransform0 and trfTransforms.

repr (self)
(Representation operator)

Default repr(self).

Overrides: object.__repr__: (inherited documentation)

str (self)
(Informal representation operator)

Default str(self).

Overrides: object.__str__: (inherited documentation)

inverse (self, name='')

Return this Xform {inversed}, refName1 and -2 swapped.

Returns:: The inverse (TRFXform).

rename (self, name='')

Change this Xform's name.

Arguments:

name - New name (str), overriding the base name "refName1@epochxrefName2".

Returns:

The old name (str).

Overrides: named._Named.rename

toEpoch (self, epoch)

Convert this Xform to epoch, if needed.

Arguments:

epoch - Epoch, fractional year (Epoch, scalar or str).

Returns:

This Xform or a copy converted to epoch.

Raises:

TRFError - Invalid epoch.

toHelmert (self, factor=0.001)

Return the Helmert transform from this Xform scaled accordingly.

Arguments:

factor - Factor to scale this Xform's xform (scalar), default from milli-meter- to meter-, from milli-arc- to arc-seconds and from ppB to ppM.

Returns:

The Helmert transform (TransformXform).

toRefFrame (self, point, datum=Datum(name='GRS80', ellipsoid=Ellipsoids.GRS80, transform=Tran`...`, **epoch_epoch2_name)

Convert an ellipsoidal point from this Xform's refName1 and epoch to this Xform's refName2 and epoch2 or epoch.

Arguments:

point - The point to convert (Cartesian or LatLon).
datum - Optional datum to define a temporary RefFrame from this Xform's refName1 or refName2 (datum).
epoch_epoch2_name - Optional keyword arguments epoch=None, epoch2=None and name=refName1.

Returns:

A copy of the point, converted and renamed.

See Also: Method RefFrame.toRefFrame for more details.

toRepr (self, **unused)

Return the represention of this Xform (str).

Overrides: named._Named.toRepr

toStr (self, epoch=None, **unused)

Return this Xform as "refName1@epochxrefName2" (str).

Arguments:

epoch - Epoch (Epoch, scalar or str), overriding this Xform's epoch.

Overrides: named._Named.toStr

toTransform (self, epoch=None, epoch2=None, inverse=False)

Combine this Xform observed at epoch into a Helmert TransformXform, optionally at epoch2 or epoch.

Arguments:

epoch - Epoch to observe from (scalar), overriding this converter's epoch.
epoch2 - Optional epoch to observe to (scalar), overriding epoch.
inverse - Use the Xform's inverse (bool).

Returns:

The Helmert transform (TransformXform).

Raises:

TRFError - Invalid epoch or epoch2.

See Also: Method toHelmert.

Property Details

epoch

Class property with a .name attribute.

Get method:: epoch(self) - Get the epoch (Epoch).
Set method:: epoch(self, epoch) - Set the epoch (Epoch, scalar or str).

epoched

Get method:: epoched(self) - Get this Xform's aggregate epoch deltas (float).
Set method:: _fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:: _fdel(inst) - Zap the cached/memoized property value.

indirected

Get method:: indirected(self) - Is this an indirected Xform? (str of space-separated refNames) or NN.
Set method:: _fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:: _fdel(inst) - Zap the cached/memoized property value.

inversed

Get method:: inversed(self) - Is this an inversed Xform? (bool).
Set method:: _fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:: _fdel(inst) - Zap the cached/memoized property value.

reframe1

Get method:: reframe1(self) - Get the un-/registered from frame (RefFrame).
Set method:: _fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:: _fdel(inst) - Zap the cached/memoized property value.

reframe2

Get method:: reframe2(self) - Get the un-/registered to frame (RefFrame).
Set method:: _fset_error(inst, val) - Throws an AttributeError, always.
Delete Method:: _fdel(inst) - Zap the cached/memoized property value.

Class TRFXform

__init__ (self, refName1, refName2, epoch=None, xform=None, rates=None, name='') (Constructor)

__repr__ (self) (Representation operator)

__str__ (self) (Informal representation operator)

inverse (self, name='')

rename (self, name='')

toEpoch (self, epoch)

toHelmert (self, factor=0.001)

toRefFrame (self, point, datum=Datum(name='GRS80', ellipsoid=Ellipsoids.GRS80, transform=Tran..., **epoch_epoch2_name)

toRepr (self, **unused)

toStr (self, epoch=None, **unused)

toTransform (self, epoch=None, epoch2=None, inverse=False)

epoch

epoched

indirected

inversed

reframe1

reframe2

init (self, refName1, refName2, epoch=None, xform=None, rates=None, name='')
(Constructor)

repr (self)
(Representation operator)

str (self)
(Informal representation operator)

toRefFrame (self, point, datum=Datum(name='GRS80', ellipsoid=Ellipsoids.GRS80, transform=Tran`...`, **epoch_epoch2_name)