leica_gsi – GSI

New in version 0.4.

GSI is a very popular data format, used by many Leica total stations. It is stored as ASCII text, with one line per measurement. In each line, there can be several blocks of data, with a blank space as a separation.

There are two variants of GSI:

• GSI8
• GSI16

but they only differ in the size of a single block.

GSI is a very rich format, and it can hold both cartesian and polar coordinates with a detailed recording of all commands executed by the device and with explicit indication of the measurement units.

Known limitations

Support for raw measurements is still incomplete, namely it lacks support for base station points, except in some specific cases when the base point coordinates are directly associated with each measurement.

Measurement units (both for distances and angles) are not supported yet.

Acknowledgements

Support for this format was added thanks to Anna Hodgkinson and Hannah Petten at the University of Liverpool. Some details of the implementation are based on the SurveyTools QGIS plugin developed by Stefan Ziegler.

See also

GSI Online for Leica TPS

Documentation for GSI from Leica.