PyVerm

What is PyVerm?

PyVerm is a Python-Package for geodetic and surveying calculations. The main focus is on calculations for surveying in switzerland, but PyVerm should be as versatile as possible. In addition to its use in education and research, it should also be possible to use it as a component for software development.

PyVerm is currently in its first phase of development.

How to install PyVerm?

# Python 3.5 and higher or PyPy3.5
pip install pyverm

How to use PyVerm?

import pyverm

standpoint = pyverm.Point(2600000, 1200000, 0)
orientation = 123.4567

station = pyverm.station(standpoint, orientation)
new_point = station.survey(pyverm.ObservationPolar(
                               reduced_horizontal_angle=375.00,
                               reduced_distance=575.1234
                               )
                           )

azimuth = pyverm.azimuth(standpoint, new_point)

User Guide

Get Started

Installation

You can install pyverm easily over PIP.

pip install pyverm

Code Examples

Distance and Azimuth
import pyverm

point_1 = pyverm.Point(2600123, 1200456, 0)
point_2 = pyverm.Point(2600789, 1200123, 0)

distance = pyverm.distance(point_1, point_2)

azimuth = pyverm.azimuth(point_1, point_2)
Polar Stakeout
import pyverm

standpoint = pyverm.Point(2600000, 1200000, 0)
orientation = 123.4567

station = pyverm.station(standpoint, orientation)
observation = station.stakeout(pyverm.Point(2600010, 1200020, 0))
Free Station
import pyverm

observations = [
    pyverm.ObservationPolar(
        reduced_targetpoint=(2600100, 1200100),
        reduced_horizontal_angle=0,
        reduced_distance=141.421356237),
    pyverm.ObservationPolar(
        reduced_targetpoint=(2600000, 1199800),
        reduced_horizontal_angle=150,
        reduced_distance=200),
    pyverm.ObservationPolar(
        reduced_targetpoint=(2599900, 1200100),
        reduced_horizontal_angle=300,
        reduced_distance=141.421356237)
]

station = pyverm.station_helmert(observations)

standpoint = station.standpoint
orientation = station.orientation

new_point = station.survey(pyverm.ObservationPolar(
                               reduced_horizontal_angle=375.00,
                               reduced_distance=575.1234
                               )
                           )

Documentation

PyVerm is a Python-Package for geodetic and surveying calculations. The main focus is on calculations for surveying in switzerland, but PyVerm should be as versatile as possible. In addition to its use in education and research, it should also be possible to use it as a component for software development.

class pyverm.ObservationPolar(**kwargs)[source]
__init__(**kwargs)[source]

Represent a polar observation with all associated values as simple and usable as possible.

Despite all attributes are optional, depending on the function certain attributes must be present.

Todo

  • Document the reduction of the raw values
  • implement the reduction of the distance
  • add unittest for this class
Parameters:
  • reduced_targetpoint (tuple or pyverm.Point) – (optional) Point which was measured with this observation
  • reduced_horizontal_angle (float or decimal) – (optional) horizontal angle in gon with all corrections
  • reduced_zenith_angle (float or decimal) – (optional) zenith angle in gon with all corrections
  • reduced_distance (float or decimal) – (optional) distance in meters with all corrections
  • raw_horizontal_angle (float or decimal) – (optional) horizontal angle in gon
  • raw_horizontal_angle_2 (float or decimal) – (optional) horizontal angle in gon in second direction
  • raw_zenith_angle (float or decimal) – (optional) zenith angle in gon
  • raw_zenith_angle_2 (float or decimal) – (optional) zenith angle in gon in second direction
  • raw_distance (float or decimal) – (optional) distance in meters not yet implemented
  • raw_distance_2 (float or decimal) – (optional) distance in meters in second direction not yet implemented
reduced_horizontal_angle

Return reduced_horizontal_angle or if None and raw in two direction present, return calculated reduced angle :return:

reduced_zenith_angle

Return reduced_zenith_angle or if None and raw in two direction present, return calculated reduced angle :return:

class pyverm.Station(standpoint, orientation)[source]
stakeout(point)[source]

Return the observation values, which are needed to stakeout the given point.

Parameters:point (tuple or pyverm.Point) – point to stakeout
Returns:ObservationPolar object
Return type:pyverm.ObservationPolar
survey(observation)[source]

Returns the Point, which was surveyed with the given observation.

Parameters:observation (pyverm.ObservationPolar) –
Returns:Point object
Return type:pyverm.Point
class pyverm.Point(y, x, z)
x

Alias for field number 1

y

Alias for field number 0

z

Alias for field number 2

pyverm.azimuth(point_a, point_b)[source]

Return the azimuth form point A to point B.

The azimuth is the clockwise angle from the north (x axis) and the connecting line from point a to point b. It is calculated with the following formula:

\[azimuth = \arctan2 (\Delta y / \Delta x)\]
Parameters:
Returns:

azimuth in gon
Return type:

Decimal
pyverm.distance(point_a, point_b)[source]

Return the 2D distance from point A to Point B.

\[distance = \sqrt{\Delta y^2 + \Delta x^2}\]
Parameters:
Returns:

distance in meters
Return type:

Decimal
pyverm.station(standpoint, orientation)[source]

Return a station with standpoint and orientation.

Parameters:
  • standpoint (tuple or pyverm.Point) – standpoint
  • orientation (int or decimal) – azimuth of null direction
Returns:

Station object
Return type:

pyverm.Station
pyverm.station_abriss(standpoint, observations)[source]

Calculate the orientation from the observations and return the station object.

\[abriss = \frac{\sum_{i=1}^{n} (azimuth_{standpoint_{i}\rightarrow targetpoint_{i}} - horizontal\:angle_{i})}{n}\]
Parameters:
  • standpoint (tuple or pyverm.Point) – standpoint
  • observations (list or tuple with pyverm.ObservationPolar) – a list or a tuple containing the Observations
Returns:

Station object
Return type:

pyverm.Station
pyverm.station_helmert(observations)[source]

Calculate the standpoint and orientation and return the station object.

The station is calculated locally an then transformed in the coordinate system truth a helmert transformation. The orientation gets determined over an abriss.

Parameters:observations (list or tuple with pyverm.ObservationPolar) – a list or a tuple containing the Observations
Returns:Station object
Return type:pyverm.Station
pyverm.transformation_helmert(sourcepoints, destinationpoints)[source]

Calculates the transformation and returns a Transformation object.

Parameters:
  • sourcepoints (list or tuple with pyverm.Point) – the source points for the transformation
  • destinationpoints (list or tuple with pyverm.Point) – the destination points for the transformation
Returns:

Transformation object
Return type:

pyverm.Station

General Information’s

FAQ

ToDo: ask me questions

Links

Road Map

v0.2.0

  • more functions
  • better structure

v0.5.0

  • big refactoring

v1.0.0

  • additional german API
  • some users ;)

after v1.0.0

  • GUI
  • QGIS-Pluging
  • or something completely different

Release Notes

PyVerm uses Semantic Versioning

0.3.0 (12.12.2019)

  • add pyverm.geocom

0.1.3 (25.12.2018)

  • test deployment with travis CI

0.1.2 (25.12.2018)

  • trying to understand git

0.1.1 (24.12.2018)

  • adding support for PyPY
  • adding more unittests
  • adding Travis CI

0.1.0 (22.12.2018)

  • big refactoring
  • first “stable” API

0.0.3 (15.12.2018)

  • first solution
  • first upload to PyPi

0.0.0 (06.12.2018)

  • Idea

License

PyVerm is licensed under the GNU General Public License version 3.

Developers Guide

Development

How to contribute?

Bug Reports

If you find a bug, please open an bug report on GitHub.

Ideas

If you have a brilliant idea for a new feature, please open an feature request GitHub.

Code

In the current development phase, I prefer to write the code myself. But for special things you can contact me via GitHub.

How to git?

Make a new Feature

  • create a feature branch, by checking out development branch to the feature branch

    git checkout -b myfeature development

  • make your developements

  • when finished, merge features branch into development branch, by checking out development branche

    git checkout development

    mergin feature branch to development branch Important: --no-ff

    git merge --no-ff myfeature

    delet your features branch

    git branch -d myfeature

    push development branch to origin (GitHub)

    git push origin development

Make a Release

  • check out release branch from development branch -> name = release-X.X.X

    git checkout -b release-X.X.X development

  • increasing version number and commit this

    git commit -a -m "version number changed for release"

  • make other stuff for release preparation and commit it

  • to finish the release, check out the master branch

    git checkout master

    merge release branch to master branch

    git merge --no-ff release-1.2

    make a tag

    git tag -a v1.2.1

    push released master to origin (GitHub) with all tags

    git push origin master

    and merge release with development branch

    git checkout development

    merge release branch to master branch

    git merge --no-ff release-1.2

    push released master to origin (GitHub) with all tags

    git push origin development

  • finally delete release branch

    git branch -d release-1.2

Translations for Surveying-Words

English German
station Station
stationing Stationierung
distance Distanze
station height Stationshöhe
target height Zielhöhe
horizontal angle Horizontalwinkel
vertical angle Vertikalwinkel
zenith angle Zenitwinkel
horizontal angle 2 Horizontalwinkel (2. Lage)
vertical angle 2 Vertikalwinkel (2. Lage)
zenith angle 2 Zenitwinkel (2. Lage)
azimuth Azimut
slope distance Schrägdistanz
slope distance 2 Schrägdistanz (2. Lage)
horizontal distance Horizontaldistanz
vertical distance Vertikaldistanz
offset in out Längsverschiebung
offset left right Querverschiebung
station id Standpunktnummer
target id Zielpunktnummer
station point Standpunkt
target point Zielpunkt

To-Do

Todo

  • Document the reduction of the raw values
  • implement the reduction of the distance
  • add unittest for this class

(The original entry is located in /home/docs/checkouts/readthedocs.org/user_builds/pyverm/checkouts/latest/pyverm/_classes.py:docstring of pyverm.ObservationPolar.__init__, line 5.)