Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
LineTerra
LineTerra turns the Wolfram Language into an earthworks design and quantification workstation. Its core method threads a cross-section template along an alignment and calculates its intersection with the existing ground; a separate polygon tool handles footprint-based earthworks such as building pads. The same procedure designs roads, dams and reservoirs, drainage networks, slope-stability sections and single-building pads. Terrain can come from a GeoTIFF raster, GeoElevationData, a delimited XYZ survey file, a LAZ or LAS LIDAR point cloud, or a synthetic corridor strip. Output covers cut and fill quantities including a mass-haul diagram, 3D visualisation, and export to CSV, true-scale PDF, PNG, DXF and notebooks.
Getting Started
— open the toolbar for a named project -- the entry point to every other window
— clear the terrain and alignment and start an empty project
— save the alignment, profile, templates and terrain metadata to a file
— restore a saved project
Terrain Sources
— load a GeoTIFF elevation raster with its .tfw world file or embedded tags
— stamp several adjoining GeoTIFF tiles into one combined grid
— grid a delimited easting/northing/elevation survey file
— grid the ground-classified points of a LAZ or LAS LIDAR point cloud
— pool several adjoining LAZ or LAS tiles into one gridded terrain
— fetch elevation from GeoElevationData for a bounding box
— fetch elevation for a lat/lon box, keeping an origin for grid export
— build a synthetic terrain strip following a set of waypoints
— resample terrain onto a finer grid
— existing ground level at an easting and northing
— ground profile along an alignment, as chainage/level pairs
— attach a geological stratum to a terrain
— load the top surface of a stratum from an XYZ file
— stratum profile along an alignment
— read an uncompressed LAS point cloud natively
— read a compressed LAZ point cloud via an external decoder
— decompress a LAZ file to LAS
Alignment and Vertical Profile
— cumulative chainage at each point of a polyline
— position at a given chainage along an alignment
— resolve intersection points and radii into a curved centreline
— circular-arc geometry rounding an alignment through an intersection point
— Bezier geometry rounding an alignment through an intersection point
— design level at a chainage, interpolated between vertical intersection points
— design level including parabolic K-value vertical curves
— grade in percent between two vertical intersection points
— graphics primitives drawing an alignment with chainage ticks and IP markers
Multiple Roads on One Terrain
— insert an IP into both alignments at every crossing with another road
— every crossing point between two stored alignments
— the first crossing between two stored alignments
— draw every other stored road as a grey overlay
Cross-Sections and Earthwork
— open the cross-section template editor and library manager
— step through cross-sections chainage by chainage
— compute cut and fill areas and volumes, with tables, charts and a mass-haul diagram
— plan view with the proposed works drawn over the terrain
— write a finished road's formation and batters into the terrain
— embed a pad, cut or filled to a formation level, into the terrain
— cut and fill volumes and areas for a pad footprint
Plan and 3D Views
— the main design window -- plan, profile, earthwork and the polygon tool
— plan view with the computed cut and fill overlaid
— contour plan of any terrain, whatever its source
— colour-shaded contour plot with an elevation legend
— offline contour preview of a loaded terrain
— open the terrain source panel
— contours drawn over a street map or satellite backdrop
— a GeoGraphics map of the terrain area with its contours
— drape a georeferenced aerial or map photograph under the contours
— the photo overlay with a contour opacity slider
— raw survey points drawn over the interpolated surface
— rotatable 3D terrain with the road draped over it and cut/fill shaded
Corridor Terrain
— open the corridor definition panel
— plan of a corridor unrolled along its centreline
— corridor cross-section at a chainage
— corridor long-section along the centreline
— a column of corridor cross-sections
— corridor tiles drawn at their true geographic angle
— a street map basemap warped to follow the corridor
Coordinates and Projections
— convert lat/lon to a named CRS -- WGS84, OSGB36 or any EPSG code
— convert lat/lon to a projected grid by EPSG code
— convert a projected grid coordinate back to lat/lon
— convert WGS84 lat/lon to British National Grid
— convert British National Grid to WGS84 lat/lon
— convert lat/lon to UTM easting and northing
— convert UTM easting and northing to lat/lon
— the UTM zone containing a longitude
— the UTM zone and hemisphere for an EPSG code
— shift a geodetic coordinate from the WGS84 datum to OSGB36
— shift a geodetic coordinate from OSGB36 to the WGS84 datum
— apply a seven-parameter Helmert datum transformation
— local metre offset of a point from a lat/lon origin
— lat/lon of a local metre offset from an origin
— convert a list of lat/lon waypoints to local metres
— great-circle distance between two lat/lon points
— metres expressed as a Quantity in angular degrees
Export
— write the horizontal alignment to CSV
— write the vertical profile to CSV
— write cut and fill areas, volumes and running totals to CSV
— setting-out coordinates in a chosen CRS at a chosen spacing
— copy a coordinate Dataset to the clipboard as CSV
— write the plan view to PDF or PNG
— write the plan to true-scale DXF with chainage ticks and a scale bar
— write cross-sections to PDF at an exact drawing scale
— write cross-sections to a notebook as named vector graphics
— write cross-sections to true-scale DXF with a geometric ruler
Global Variables
— the active road's alignment, profile and design state
— the Earth radius in metres used by the coordinate conversions
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