(This functionality is available with the Input / Output module)
Imports data from Leica System 1200. The data imported consists of points, straight lines and areas as polygons.
Point, line and polygon codes associated with the geometry objects to be imported are used.
Refer also to the Import dialog box topic.
This instrument uses Compact Flash (CF) cards to store the data.
To transfer between the Leica System 1200 and the system, you must have a CF card drive installed in or connected to your computer, and the appropriate device drivers already loaded. Refer to your CF card drive manual for details of these drivers.
The import operation transfers the data from the selected Leica database on the CF card in that drive.
A sample code list for alpha coding for use on the Leica System 1200 is available for download from the LISCAD website (Knowledge base article 106). You may also create, edit and upload alternative code lists using Leica Geo Office to suit your particular needs.
Notes and Import Rules:
The Leica System 1200 uses a common database to store both TPS and GPS data.
System 1200 geometry objects imported include points, lines and areas (polygons). Codes assigned to these objects are used via the code table to set LISCAD object attributes. A line style lookup "LeicaSystem1200.llu" installed with LISCAD in the user directory can be used to match line styles used on the instrument to LISCAD's line styles.
The System 1200 allows both geographical WGS84 & grid co-ordinates to be stored in the same job. You have two options to transform co-ordinates as they are imported. You can use a LISCAD transformation OR you can use a transformation that is internal to your Leica job (Note: these will appear in the dropdown list on the dialog preceded with "System 1200" as the name).
When importing System 1200 data into LISCAD, the type of LISCAD project you have set up and which transformation you use affects the data that can be imported.
LISCAD on a Plane
- Grid co-ordinates will be imported.
- LISCAD Transformation - WGS84 geographical co-ordinates cannot be transformed and will therefore not be imported.
- Leica Transformation - WGS84 geographical co-ordinates will be transformed to grid via the selected transformation and will be imported.
LISCAD on a Projection (ellipsoid not based on WGS84) with no transformation selected
- Grid co-ordinates will be imported.
- WGS84 geographical co-ordinates cannot be transformed and will therefore not be imported.
LISCAD on a Projection (ellipsoid not based on WGS84) with transformation selected
- Grid co-ordinates will be imported.
- LISCAD Transformation - WGS84 geographical co-ordinates will be transformed to the projection via the selected LISCAD transformation and will be imported.
- Leica Transformation - WGS84 geographical co-ordinates will be transformed to the projection via the selected Leica transformation and will be imported.
LISCAD on a Projection (ellipsoid based on WGS84)
- Grid co-ordinates will be imported.
- WGS84 geographical co-ordinates will be imported.
Any co-ordinates that can not be imported will be listed in a report at the end of the process.
LISCAD will treat points with elevations in the following manner;
- If a point has an orthometric height, then this is imported directly into SEE.
- If a point has an ellipsoidal height, LISCAD will use the attached Leica Geoid Model to convert the height to an orthometric height. If there is no geoid model, LISCAD uses the geoid separation set in "Utilities/Configure/Earth Constants" to calculate an orthometric height.
- When importing data through "Data Conversions/Import/Leica System 1200", warnings are created for every point that has had LISCAD's Geoid separation applied to it.
- When importing data through "Field Transfer/Input/Data Recorder", a note is put in the RAW file for every point that has had LISCAD's Geoid separation applied to it. This then is taken through to the field file and also placed into the reduction report.