LINZ station coordinate model (aka station prediction model) package.
This package provides python routines for analysing time series of station coordinates, typically from daily processing of GNSS data. These use the python numpy and matplotlib modules.
The main python modules provided are:
- LINZ.CORS_Timeseries
- Provides functions for reading coordinate time series from CSV files, SQLite database files (as generated by LINZ GNSS daily processing scripts), Postgres, an http api, and directories of CSV files. Provides routines for comparing and plotting time series.
- LINZ.StationCoordinateModel
- Routines for reading, writing, and calculating station coordinate models - models of station coordinate time series including offsets, ramps, slow slip models, velocity changes, etc. Models are stored in an XML format. These models are used in the PositioNZ-PP GNSS post processing service.
The module installs a number of programs including:
- analyse_cors
- Analyse coordinate time series to compare with existing station coordinate models and deformation model. Create CSV files of coordinate offsets and of model coordinates and a JSON file summarizing the status.
- report_datum_status
- Sends notifications based on the datum status from analyse_cors
- cors_station_coordinates
- Exports station coordinates from time series files into CSV files. Coordinates can be converted to NZGD2000 using the published deformation model files. Optionally different versions of the deformation model can be used and compared.
- spm_editor
- GUI tool for calculating station coordinate models based on time series data
- station_coord_model
- Calculates coordinates for requested time periods from station coordinate models
- calc_refstation_coords
- Generates a CSV file of the coordinates of LINZ reference stations at a specific date. Combines information from the station coordinate models and the deformation model to calculate the NZGD2000 coordinate at the reference date, and compares this with the coordinate in the geodetic database. Optionally creates a CSV file that can be used to update Landonline/geodetic database coordinates.