Annotations Elements and Tools
Once a 3D model is ready Annotation Elements can be placed directly on the model. Annotation Elements are organized in the software in individual groups i.e. Structures, Geometry and Occurrences and Area Partitioning. In addition, Analyst provides various Tools (e.g. hemispherical plots, automatic joint set clustering, definition of discontinuities, etc.) that accelerate the assessment of rock and terrain surfaces. The following information provides an overview of available features of the Analyst. A detailed description to each feature is found in individual chapters in this user manual.
Structures
Measurements:
- Orientation: Measurement of the spatial orientation of small surface patch around a freely placed position. Once it is set, the values for dip and dip direction are instantly available.
- Trace: Polygonal line in 3D that is used to map discontinuities, such as joint or strata
- Guided Trace: Automatic trace detection by clicking the start and end point. Similar to Trace.
- Area: Closed polygonal line used e.g. for mapping joint faces. Once it is set, the orientation of the area is given in terms of the mean Orientation of the surface normal.
- Region Grow: Closed polygonal lines enclosing automatically delineated planar patches. Similar to Area.
- Bridge: Direct connection between Traces for defining un-fractured parts of the rock mass
Zones & Scanlines:
- Zone:
- Analysis Zone: Closed polygon which selects Traces, Areas and Bridges for Trace Map Analysis
- Exclusion Zone: Closed polygon which defines regions in the Analysis Zones. Those regions are excluded from Trace Map Analysis.
- Scanline: Allows determining the spacing between Traces along an arbitrary defined scanline
Tools:
- Region Detection: Searches fully automated for planar patches with user defined resolution and roughness.
- Trace Map Analysis: Shows data on Trace spacing and Traces/Bridges lengths
- Stereonet Analysis: Plots Orientations in a stereographic projection and displays the corresponding statistics
- Clustering: Groups Structure Measurements automatically into Structure Sets
- Discontinuity Model: Planar geometric area that models the size and shape of a discontinuity. Discontinuity Models can be assigned to Orientations, Traces and Areas.
- Discontinuity Surfaces: Models the direction of a fractures and wavy discontinuities. Discontinuity Surface can be assigned to Traces.
- Add Structure Set: Adds a new Structure Set to the list
A Discontinuity can be modelled from parameters of single Orientations, Traces and Areas.
Annotation Elements of Geometry and Occurrences are organized within individual lists (Volumes, Tapes, Measuring Points, Water, etc.). Annotations cannot be moved between the different lists.
Structure Measurements (i.e. Orientations, Traces, Areas and Bridges) are grouped in so-called Structure Sets, which are shown on the right part of the Analyst window (within the Structure List). Structure Measurements can be moved between different Structure Sets.
Once a Structure Set contains more than two Orientation / Trace measurements, a statistical evaluation by a hemispherical plot, cluster plot and a spacing plot is shown.
Geometry
Measurements:
- Volume: Closed polygonal line enclosing volumes of moulds
- Area Basic: Closed polygonal line used e.g. for mapping joint faces. The Area Basic is a reduced version (limited functionality) of the Area measurement (see Structure Measurements).
- Tape:
- Spatial and other projected distances between two points on the 3D model
- Profile along the tape measure
- Measuring Point: Co-ordinates of a measured position; (x,y,z) or (E,N,H)
- Section: Planar polygon obtained by the intersection of the 3D model with an arbitrarily orientated cutting plane
Tools:
- Contour Lines: Displays the contour lines of the 3D model in a plan view
- Cutoff Plane: Discriminates parts of the 3D model by a plane
- Depth Colouring: Displays a false colour overlay on the surface of the 3D model for displaying irregularities
- CSV 4D: Displays movement (displacement) data imported from Guardian - IDS GeoRadar
Occurrences
- Water: Sphere pointing out water ingress
- Punctual Occurrence: Sphere pointing out single occurrences or events
- Non-punctual Occurrence: Polygonal line in 3D that is used to mark single non-punctual occurrences or events
Annotation Elements of Geometry and Occurrences are organized within individual lists (Volumes, Tapes, Measuring Points, Water, etc.). Annotations cannot be moved between the different lists.
Area Partitioning
- Lithologic Region: Closed polygonal lines used for mapping rock types on the 3D model
- Homogeneous Areas: Closed polygonal lines used for mapping regions with similar properties on the 3D model
Annotation Elements of Geometry, Occurrences and Area Partitioning are organized within individual lists (Volumes, Tapes, Measuring Points, Water, Lithologic Regions, etc.). Annotations cannot be moved between the different lists.