Data Import from LandXML

Description

Import data in the LandXML format.

Access

Home / Data / Import / LandXML

Requirements

Xchange LandXML module

Options

The following properties control the import.

General	Description
Import Measurements	For Method: Coordinates - Select the checkbox to store raw total station measurements and GPS measurements in the project. NSW LRS Measurements / VIC DCM Measurements - Select the checkbox to store reduced measurements in the project in the order they are processed. This is a alternative to manually keying in data of the plan.
Extended Report	Select the checkbox to view the report in greater detail.
Method	Select one of the following: Coordinates - Import coordinates from the CGPoints section of the file. NSW LRS Measurements / VIC DCM Measurements - Import reduced observations and CGPoints connected to the reduced observations, then recompute the point coordinates using a methodology that preserves bearings and distances.
Measurement Date Attribute	Type the name of the attribute where you want the measurement date to be placed.
Transformation	Description
Apply Transformation	Select one of the following: Yes (Scaled) to compute a scaled transformation using points with the same name and apply it to all points in the imported file. Yes (Unscaled) to compute an unscaled transformation using points with the same name and apply it to all points in the imported file. No to import the points in the file without applying a transformation. Note: A 2D Conformal with Height transformation is computed if at least one matched point pair has known heights. A 2D Conformal transformation is computed if all matched point pairs have at least one unknown height. Clear the checkbox when the Method is configured to NSW LRS Measurements or VIC DCM Measurements.
Save Transformation	Select the checkbox to save the computed transformation to the project.
Points	Description
Name Format	Add a prefix or suffix to rename points imported from the file. Note: {0} represents the current point name. Type a character before {0} to add a prefix. Type a character after {0} to add a suffix.
Name Offset	Add a numeric offset to the numeric component of the names of imported points.
Adopt Existing	Do one of the following to manage points with the same name: Select the checkbox to adopt a point in the project in preference to importing a point from the file when points with the same name are encountered. Clear the checkbox to import all points from the file. Points with the same name may be created in the project. Note: Clear the checkbox when the Method is configured to NSW LRS Measurements or VIC DCM Measurements.
Lookup Tables	Description
Layer	Select the Layer lookup table to be used during the import.
Attribute Definition	Select the Attribute Definition lookup table to be used during the import.

A blank selection for a lookup table indicates that no lookup will be performed.

Notes

You can import points and their attributes, lines (straights,circular arcs and spirals), alignments (horizontal), polygons, surfaces and pipes (circular shape only).
Points are placed on layers according to their code.
Point attributes are added to the attribute definition for the appropriate layer.
Imported lines are placed on the active layer.
To import a line as a breakline, prior to import, for the active layer, in the layers General tab, set Breakline to Yes.
View raw total station measurements and GPS measurements in the Measurements view.
The name of the saved transformation file is included in the import report.
Point name matching is performed prior to re-naming.
Transformations are computed and applied only when measurements are imported.
A total station setup summary displays when TPS measurements are imported. Differences larger than the allowable tolerance display in red.
Curves are imported as 2D circular arcs with heights in a line object.
Spirals are imported as transition curves.
When the Method determines that coordinates are computed from reduced observations:
- Coordinates are approximate.
- The starting point is recorded in the import report.
- In order to preserve the bearings and distances from the file, misclosures in the data are not distributed. If an observation closes onto a point that has already been computed or used as a starting point, an additional point is created and a letter will be added as a suffix to the point name. A misclose line is created between the original point and the suffixed point.
- Points representing misclosures are created on the Misclose Points layer.
- Lines representing misclosures are created on the Misclose Lines layer.
- Reduced measurements with height differences only are ignored.
- For NSW LRS Measurements
  - Measurements are processed using the hierarchy; Roads, Boundary, Connections and Other (determined from the description field) and the order they appear in the file.
  - A shift is performed using the CGPoint with the description X or A.
  - When the SCIMS identifier is available for control marks, control points are named '{Monument type} {SCIMS identifier}'. Points created from reduced observations that close onto control marks are named '{Monument type} {SCIMS identifier}' followed by an additional suffix.
  For VIC DCM Measurements
  - Ensure the project is on a geocentric coordinate system if coordinates in the file are latitudes and longitudes.
  - Measurements are processed using the hierarchy; Normal (Stage Lot), Normal (Road), Normal (Lot), Normal (Reserve), Normal (Common Property), Normal (Crown Parcel), Normal (Easement), Normal (Restriction), Normal (Depth Limit), Normal (Owners Corporation), Normal (Other), Sideshot, Traverse, Topo and Other (determined from the purpose field on the reduced observation and the parcel class), and the order they appear in the file.
  - A shift is performed using the last monument with an origin survey attribute.
  - Annotate lines using ground distances to view the bearings and distances as they appear on the plan.