Package pygeodesy :: Module ltp :: Class ChLV

Class ChLV

              object --+    
                       |    
                   _ChLV --+
                           |
  object --+               |
           |               |
named._Named --+           |
               |           |
named._NamedBase --+       |
                   |       |
      LocalCartesian --+   |
                       |   |
                     Ltp --+
                           |
                          ChLV

Conversion between WGS84 geodetic and Swiss projection coordinates using pygeodesy.EcefKarney's Earth-Centered, Earth-Fixed (ECEF) methods.

See Also: Swiss projection formulas, page 7ff, NAVREF, REFRAME and SwissTopo Scripts GPS WGS84 <-> LV03.

Instance Methods

__init__(self, latlonh0=Bern(lat=46.952406, lon=7.439583, height=49.55, datum=Datum(na..., **other_Ltp_kwds)
New ECEF-based WGS84-Swiss ChLV converter, centered at Bern, Ch.

forward(self, latlonh, lon=None, height=0, M=None, **name)
Convert WGS84 geodetic to Swiss projection coordinates.

reverse(self, enh_, n=None, h_=0, M=None, **name)
Convert Swiss projection to WGS84 geodetic coordinates.

Inherited from LocalCartesian: __eq__, reset, toStr

Inherited from named._NamedBase: __repr__, __str__, others, toRepr

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

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

Static Methods

false2(Y, X, LV95=True, **name)
Add the Swiss LV95 or LV03 falsing.

isLV03(e, n)
Is (e, n) a valid Swiss LV03 projection?

isLV95(e, n, raiser=True)
Is (e, n) a valid Swiss LV95 or LV03 projection?

unfalse2(e, n, LV95=None, **name)
Remove the Swiss LV95 or LV03 falsing.

Class Variables
	Bern = `Bern(lat=46.952406, lon=7.439583, height=49.55, datum=D...`

Properties

Inherited from Ltp: ecef

Inherited from LocalCartesian: M, datum, ellipsoid, height0, lat0, latlonheight0, lon0, lon00

Inherited from named._Named: classname, classnaming, iteration, name, named, named2, named3, named4, sizeof, typename

Inherited from object: __class__

Method Details

init (self, latlonh0=Bern(lat=46.952406, lon=7.439583, height=49.55, datum=Datum(na`...`, **other_Ltp_kwds)
(Constructor)

New ECEF-based WGS84-Swiss ChLV converter, centered at Bern, Ch.

Arguments:

latlonh0 - The geodetic origin and height, overriding Bern, Ch.
other_Ltp_kwds - Optional, other Ltp.__init__ keyword arguments.

Raises:

TypeError - Invalid ecef.

Overrides: object.__init__

See Also: Ltp.__init__ for more information.

forward (self, latlonh, lon=None, height=0, M=None, **name)

Convert WGS84 geodetic to Swiss projection coordinates. Must be overloaded.

Arguments:

latlonh - Either a LatLon, Ltp or scalar (geodetic) latitude (degrees).
lon - Optional, scalar (geodetic) longitude (degrees) iff latlonh is scalar, ignored otherwise.
height - Optional, height, vertically above (or below) the surface of the ellipsoid (meter) iff latlonh and lon are scalar, ignored otherwise.
M - If True, return the concatenated rotation EcefMatrix iff available and for ChLV only, None otherwise (bool).
name - Optional name=NN (str).

Returns:

A ChLV9Tuple

(Y, X, h_, lat, lon, height, 
          ltp, ecef, M)

with the unfalsed Swiss Y, X coordinates, Swiss h_ height, the given geodetic lat, lon and height, ecef (Ecef9Tuple) at Bern, Ch, rotation matrix M and ltp this ChLV, ChLVa or ChLVe instance.

Raises:

LocalError - Invalid or non-scalar latlonh, lon or height.

Overrides: LocalCartesian.forward

(inherited documentation)

reverse (self, enh_, n=None, h_=0, M=None, **name)

Convert Swiss projection to WGS84 geodetic coordinates.

Arguments:

enh_ - A Swiss projection (ChLV9Tuple) or the scalar, falsed Swiss E_LV95 or y_LV03 easting (meter).
n - Falsed Swiss N_LV85 or x_LV03 northing (meter) iff enh_ is scalar, ignored otherwise.
h_ - Swiss h' height (meter) iff enh_ and n are scalar, ignored otherwise.
M - If True, return the concatenated rotation EcefMatrix iff available and for ChLV only, None otherwise (bool).
name - Optional name=NN (str).

Returns:

A ChLV9Tuple

(Y, X, h_, lat, lon, height, 
          ltp, ecef, M)

Raises:

LocalError - Invalid or non-scalar enh_, n or h_.

Overrides: LocalCartesian.reverse

(inherited documentation)

false2 (Y, X, LV95=True, **name)
Static Method

Add the Swiss LV95 or LV03 falsing.

Arguments:

Y - Unfalsed Swiss Y easting (meter).
X - Unfalsed Swiss X northing (meter).
LV95 - If True, add LV95 falsing, if False add LV03 falsing, otherwise leave unfalsed.
name - Optional name=NN (str).

Returns:

A ChLVEN2Tuple(E_LV95, N_LV95) or a ChLVyx2Tuple(y_LV03, x_LV03) with falsed Y and X, otherwise a ChLVYX2Tuple(Y, X) with Y and X as-is.

isLV03 (e, n)
Static Method

Is (e, n) a valid Swiss LV03 projection?

Arguments:

e - Falsed (or unfalsed) Swiss easting (meter).
n - Falsed (or unfalsed) Swiss northing (meter).

Returns:

True if (e, n) is a valid, falsed Swiss LV03, projection False otherwise.

isLV95 (e, n, raiser=True)
Static Method

Is (e, n) a valid Swiss LV95 or LV03 projection?

Arguments:

e - Falsed (or unfalsed) Swiss easting (meter).
n - Falsed (or unfalsed) Swiss northing (meter).
raiser - If True, throw a LocalError if e and n are invalid Swiss LV95 nor LV03.

Returns:

True or False if

(e, 
          n)

is a valid Swiss LV95 respectively LV03 projection, None otherwise.

unfalse2 (e, n, LV95=None, **name)
Static Method

Remove the Swiss LV95 or LV03 falsing.

Arguments:

e - Falsed Swiss E_LV95 or y_LV03 easting (meter).
n - Falsed Swiss N_LV95 or x_LV03 northing (meter).
LV95 - If True, remove LV95 falsing, if False remove LV03 falsing, otherwise use method isLV95(e, n).
name - Optional name=NN (str).

Returns:

A ChLVYX2Tuple(Y, X) with the unfalsed e respectively n.

Class Variable Details

Bern

Value:

Bern(lat=46.952406, lon=7.439583, height=49.55, datum=Datum(name='WGS8
4', ellipsoid=Ellipsoids.WGS84, transform=Transforms.WGS84))

Class ChLV

__init__ (self, latlonh0=Bern(lat=46.952406, lon=7.439583, height=49.55, datum=Datum(na..., **other_Ltp_kwds) (Constructor)

forward (self, latlonh, lon=None, height=0, M=None, **name)

reverse (self, enh_, n=None, h_=0, M=None, **name)

false2 (Y, X, LV95=True, **name) Static Method

isLV03 (e, n) Static Method

isLV95 (e, n, raiser=True) Static Method

unfalse2 (e, n, LV95=None, **name) Static Method

Bern

init (self, latlonh0=Bern(lat=46.952406, lon=7.439583, height=49.55, datum=Datum(na`...`, **other_Ltp_kwds)
(Constructor)

false2 (Y, X, LV95=True, **name)
Static Method

isLV03 (e, n)
Static Method

isLV95 (e, n, raiser=True)
Static Method

unfalse2 (e, n, LV95=None, **name)
Static Method