Import Leica DBX

(This functionality is available with the Input / Output module)

Imports data from Leica DBX. The instruments utilising Leica DBX include the System 1200, Viva and Nova.

The data imported may consists of:

Point, line and polygon codes associated with the geometry objects to be imported are used.

Refer also to the Import dialog box topic.

This instruments use Compact Flash (CF) cards to store the data.

To transfer between Leica DBX 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.

Sample code lists for use on the Leica DBX instruments are available from the LISCAD User Folder. 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 DBX can store store both TPS and GPS data.

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 "Viva & System1200.llu" is installed with LISCAD in the user directory can be used to match line styles used on the instrument to LISCAD's line styles.

Images taken onboard a DBX instrument are also imported and linked to the appropriate objects in LISCAD. Note: Links to Areas/Polygons are not imported. The images can be viewed in LISCAD using the "Computations/Examine/Attributes/Object/Photo Attributes" command, where Object refers to either Points, Lines or Polygons. The images and their attributes can also be viewed and edited using the Computations/Edit/Attributes/Photos command.

Scans and geometry may be imported separately or together. Please refer to the Import drop list in the dialog.
If the survey is on datum, you would typically import them together using the Import option "Geometry and Scans".
However, if the survey is on an arbitrary datum, you may first wish use the Import "Geometry" option. That will enable you to then transform the geometry onto datum in SEE prior to importing the "Scans".
When scans only are imported, the positions of the control points in SEE will then be used to transforn the scans during the import process.
Also, if you prefer to import the geometry via Field Transfer, you could adjust the survey using traverse editor or least squares adjustment, then later import the "Scans" only to ensure they are transformed to your adjusted control.

The DBX instruments allows both geographical WGS84 and 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).

When importing DBX 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

LISCAD on a Projection (ellipsoid not based on WGS84) with no transformation selected

LISCAD on a Projection (ellipsoid not based on WGS84) with transformation selected

LISCAD on a Projection (ellipsoid based on WGS84)

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: