Liscad Manual

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(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.

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The data imported may consists of:

  • Geometry (includes points, straight lines, and areas as polygons)
  • Images
  • Point Cloud Scans

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

Refer also to the Import dialog box topic.

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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.

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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

  • 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.

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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) withtransformation selected

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  • 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.

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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 attempt to use the appropriate Leica Geoid Model (GEM file) to convert the height to an orthometric height. It is expected that the GEM file referenced in the Dbx will be in the same folder as the Dbx files. The user can only browse to the GEM file of name referenced in the Dbx. The name of the required GEM file is displayed in the Filter section of the folder browser dialog.
  • 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. Similar warnings are also placed in the field file and the reduction report.

LISCAD is a complete field-to-finish system trusted by surveyors in over 100 countries. LISCAD interfaces with all major surveying, engineering, GIS and CAD systems. LISCAD’s portfolio comprises of integrated Land Surveying and Civil Engineering software modules. Some of the key features include rigorous geodetic computations, unlimited model size, traverse and least squares network adjustment, 3D/2D transformations, volume computations, geo-referenced background images, 3D Visualisation, profiles, impressive engineering design capability for easy generation of virtually any design, Survey Live for real-time surveying and set-out with total station or GNSS equipment and Point Cloud for importing, viewing, editing and digitisation of point cloud data.

  • 1990
  • 2016
  • Minimum System RequirementsOperating SystemWindows Vista (32bit or 64bit) with Service Pack 2Windows 7 (32bit or 64bit) with Service Pack 1Windows 8 (32bit or 64bit)Windows 8.1 (32bit or 64bit)Windows 10 (32bit or 64bit)CPU1 GHz processorMemory1 GB RAM (32-bit) or 2 GB RAM (64-bit)Storage200 MB install disk space; 8 GB free disk spaceGraphicsDirectX 9.0c compatible display adapter with 256 MB on-board or shared memoryImproved performance results from exceeding these minimums. It is also advised that you install the latest display adapter driver.
  • Windows
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  • SEE
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  • 2.1.2
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  • From data source, Selectable, Manual georeferencing, Others

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  • Extend, Parallel, Collinear, Perpendicular, Particular angle, Angle bisector, Concentric, Tangent, Symmetric, Others
  • By drawing attributes, Select by administrative attributes, Within buffer, Spatial selection, Multiple select, Others
  • By select, By attributes, By layer, Others
  • Scale, Copy, Move, Rotate, Mirror, Align, Stretch, Drag and drop, Dilate, Others

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  • Map layers, Attribute table to geometry, Others
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  • Area, Length, Others
  • Build, Check, Clean, Others
  • License
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  • 1000's of users in over 100 countries
  • Surveying and Civil Engineering
  • - Rigorous Geodetic Computations- Easy to learn and use- Free evaluation- Interfaces with all popular surveying, engineering and CAD systems and field sensors.-Modular system allowing for the purchase of only what is required with the option to add functionality as needed
  • LISTECH Neo
  • Point, Multipoint, Symbol, Text, Others
  • Line segment, Polyline, Multiline, Arc, Others
  • Polygon, Circle
  • Color, Pattern, Hatch, Gradient color
  • Zoomfactor, Target point, Twist angle
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