Package pychlv

A pure Python implementation of the SwissTopo LandesVermessung 1995 (LV95) and -1903 (LV03) local projections and conversions from and to WGS84 or Bessel1841 geodetic lat-, longitude and height.

Version: 26.07.17

Submodules

pychlv.__main__: Run some ChLVa, ChLVe, ChLVr or ChLV forward or - reverse examples.
pychlv.__pygeodesy: (INTERNAL) pychlv access to some private pygeodesy attributes.
pychlv.chlvTuples: Classes ChLV9Tuple, ChLVEN2Tuple, ChLVYX2Tuple and ChLVyx2Tuple.
pychlv.chlvs: Classes ChLV, ChLVa, ChLVe and ChLVr for conversion between (WGS84 or Bessel1841) geodetic lat-, longitude and height and SwissTopo LandesVermessung 1995 (LV95) and -1903 (LV03) local projections.

Classes
	ChLV Conversion between (WGS84) geodetic and Swiss projection coordinates using PyGeodesy EcefKarney ECEF methods.
	ChLV9Tuple 9-Tuple `(Y, X, h_, lat, lon, height, ltp, ecef, M)` with unfalsed Swiss (Y, X, h_) coordinates and height, all in `meter`, `ltp` either a ChLV, ChLVa or ChLVe instance and `ecef` (EcefKarney at Bern, Ch), otherwise like Local9Tuple.
	ChLVEN2Tuple 2-Tuple `(E_LV95, N_LV95)` with falsed Swiss LV95 easting and northing in `meter (2_600_000, 1_200_000)` and origin at `Bern, Ch`.
	ChLVError Error raised for `ChLV`, `ChLVa`, `ChLVe` or `ChLVr` or other issues.
	ChLVYX2Tuple 2-Tuple `(Y, X)` with unfalsed Swiss LV95 easting and northing in `meter`.
	ChLVa Conversion between (WGS84) geodetic and Swiss projection coordinates using the SwissTopo Approximate formulas.
	ChLVe Conversion between (WGS84) geodetic and Swiss projection coordinates using the SwissTopo Ellipsoidal approximate formulas and Bolliger, J. pp 148-151 (also GGGS).
	ChLVr Conversion between (Bessel1841) geodetic and Swiss projection coordinates using the SwissTopo Rigorous formulas 3.2 and 3.3, December 2018, pp 20-21.
	ChLVyx2Tuple 2-Tuple `(y_LV03, x_LV03)` with falsed Swiss LV03 easting and northing in `meter (600_000, 200_000)` and origin at `Bern, Ch`.
	EcefKarney Conversion between geodetic and geocentric, Earth-Centered, Earth-Fixed (ECEF) coordinates transcoded from Karney's C++ Geocentric methods.
	LatLon4Tuple 4-Tuple `(lat, lon, height, datum)` in `degrees90`, `degrees180`, `meter` and `Datum`.
	LocalCartesian Conversion between geodetic `(lat, lon, height)` and local cartesian `(x, y, z)` coordinates with geodetic origin `(lat0, lon0, height0)`, transcoded from Karney's C++ class LocalCartesian.
	Ltp A local tangent plan (LTP), a sub-class of `LocalCartesian` with (re-)configurable ECEF converter.

Functions

latDMS(deg, form='dms', prec=None, sep='', **s_D_M_S)
Convert latitude to a string, optionally suffixed with N or S.

lonDMS(deg, form='dms', prec=None, sep='', **s_D_M_S)
Convert longitude to a string, optionally suffixed with E or W.

machine()
Return standard platform.machine, but distinguishing Intel native from Intel emulation on Apple Silicon (on macOS only).

Variables
	pychlv_abspath = `'..../PyChLV/...`

Function Details

latDMS (deg, form=`'dms'`, prec=None, sep='', **s_D_M_S)

Convert latitude to a string, optionally suffixed with N or S.

Arguments:

deg - Latitude to be formatted (scalar degrees).
form - Format specifier for deg (str or F_...).
prec - Number of decimal digits (0..9 or None for default).
sep - Separator between degrees, minutes, seconds, suffix (str).
s_D_M_S - Optional keyword arguments to override any or cancel all DMS symbol suffixes, see function pygeodesy.toDMS.

Returns:

Degrees in the specified form (str).

See Also: Function pygeodesy.toDMS and its Notes for further details.

lonDMS (deg, form=`'dms'`, prec=None, sep='', **s_D_M_S)

Convert longitude to a string, optionally suffixed with E or W.

Arguments:

deg - Longitude to be formatted (scalar degrees).
form - Format specifier for deg (str or F_...).
prec - Number of decimal digits (0..9 or None for default).
sep - Separator between degrees, minutes, seconds, suffix (str).
s_D_M_S - Optional keyword arguments to override any or cancel all DMS symbol suffixes.

Returns:

Degrees in the specified form (str).

See Also: Function pygeodesy.toDMS and its Notes for further details.

machine()

Return standard platform.machine, but distinguishing Intel native from Intel emulation on Apple Silicon (on macOS only).

Returns:: Machine 'arm64' for Apple Silicon native, 'x86_64' for Intel native, "arm64_x86_64" for Intel emulation, etc. (str with commas replaced by underscores).

Variables Details

pychlv_abspath

Value:

'..../PyChLV/pychlv'

Package pychlv

latDMS (deg, form='dms', prec=None, sep='', **s_D_M_S)

lonDMS (deg, form='dms', prec=None, sep='', **s_D_M_S)

machine()

pychlv_abspath

latDMS (deg, form=`'dms'`, prec=None, sep='', **s_D_M_S)

lonDMS (deg, form=`'dms'`, prec=None, sep='', **s_D_M_S)