Terrain

99 tools

General

36 features
  • Assess Route

    wasm

    Evaluates a route alignment against an elevation model.

  • Breakline Mapping

    wasm

    Extracts terrain breaklines to characterize relief, local landforms, and surface behavior.

  • Convergence Index

    wasm

    Computes a terrain convergence index to characterize relief, local landforms, and surface behavior.

  • DEM Void Filling

    wasm

    Fills no-data elevation cells in a DEM by interpolating neighboring values.

  • Deviation From Mean Elevation

    wasm

    Computes deviation from local mean elevation from a digital elevation model.

  • Difference From Mean Elevation

    wasm

    Computes difference from local mean elevation from a digital elevation model.

  • Directional Relief

    wasm

    Measures relief in defined directions to characterize terrain, local landforms, and surface behavior.

  • Elev Above Pit

    wasm

    Computes relative elevation above the drainage pit from a digital elevation model.

  • Elev Above Pit Dist

    wasm

    Computes vertical distance above the drainage pit from a digital elevation model.

  • Elevation Percentile

    wasm

    Computes the local elevation percentile from a digital elevation model.

  • Embankment Mapping

    wasm

    Identifies embankments in an elevation model to characterize relief and landforms.

  • Exposure Towards Wind Flux

    wasm

    Calculates terrain exposure to wind flux.

  • Feature Preserving Smoothing

    wasm

    Smooths a raster while preserving relevant features and edges.

  • Feature Preserving Smoothing Multiscale

    wasm

    Smooths a raster at multiple scales while preserving terrain features.

  • Fetch Analysis

    wasm

    Calculates unobstructed wind fetch length over a water surface.

  • Fill Missing Data

    wasm

    Fills missing raster values to characterize relief, local landforms, and surface behavior.

  • Find Ridges

    wasm

    Identifies potential ridge and summit cells in a digital elevation model.

  • Hillshade

    wasm

    Generates hillshading from a DEM with a defined illumination source.

  • Hypsometrically Tinted Hillshade

    wasm

    Combines hillshading with hypsometric tints to show elevation and relief simultaneously.

  • Local Hypsometric Analysis

    wasm

    Computes hypsometric metrics over local neighborhoods from a digital elevation model.

  • Low Points On Headwater Divides

    wasm

    Locates low points on headwater divides to characterize terrain and surface behavior.

  • Map Off-Terrain Objects

    wasm

    Identifies above-terrain objects by comparing surface and elevation models.

  • Max Downslope Elev Change

    wasm

    Computes the maximum downslope elevation change from a digital elevation model.

  • Max Upslope Elev Change

    wasm

    Computes the maximum upslope elevation change from a digital elevation model.

  • Min Downslope Elev Change

    wasm

    Computes the minimum downslope elevation change from a digital elevation model.

  • Multidirectional Hillshade

    wasm

    Generates hillshading combining illumination from multiple directions to reduce azimuth bias.

  • Num Downslope Neighbours

    wasm

    Counts downslope neighboring cells to characterize relief, landforms, and surface behavior.

  • Num Upslope Neighbours

    wasm

    Counts upslope neighboring cells to characterize relief, landforms, and surface behavior.

  • Profile

    wasm

    Extracts an elevation profile along a line.

  • Remove Off-Terrain Objects

    wasm

    Removes off-terrain objects to characterize relief, landforms, and surface behavior.

  • Ridge And Valley Vectors

    wasm

    Extracts ridge and valley vectors to characterize relief, landforms, and surface behavior.

  • Slope Vs Aspect Plot

    wasm

    Plots the relationship between slope and aspect to characterize relief and landforms.

  • Slope Vs Elev Plot

    wasm

    Plots the relationship between slope and elevation to characterize relief and landforms.

  • Smooth Vegetation Residual

    wasm

    Smooths the vegetation residual of a surface model.

  • Surface Area Ratio

    wasm

    Computes surface area ratio to characterize relief, landforms, and surface behavior.

  • Topographic Hachures

    wasm

    Computes topographic hachures from a digital elevation model.

Derivatives

23 features
  • Accumulation Curvature

    wasm

    Computes accumulation curvature from a digital elevation model.

  • Aspect

    wasm

    Computes the steepest-slope-facing direction (aspect) of each cell from a digital elevation model.

  • Casorati Curvature

    wasm

    Computes Casorati curvature from a digital elevation model.

  • Curvedness

    wasm

    Calculates curvedness from a digital elevation model.

  • Difference Curvature

    wasm

    Calculates difference curvature from a digital elevation model.

  • Gaussian Curvature

    wasm

    Calculates Gaussian curvature from a digital elevation model.

  • Generating Function

    wasm

    Calculates a generating function from a digital elevation model.

  • Horizontal Excess Curvature

    wasm

    Calculates horizontal excess curvature from a digital elevation model.

  • Maximal Curvature

    wasm

    Calculates maximal curvature from a digital elevation model.

  • Mean Curvature

    wasm

    Calculates mean curvature from a digital elevation model.

  • Minimal Curvature

    wasm

    Calculates minimal curvature from a digital elevation model.

  • Plan Curvature

    wasm

    Calculates plan curvature from a digital elevation model.

  • Principal Curvature Direction

    wasm

    Calculates principal curvature direction from a digital elevation model.

  • Profile Curvature

    wasm

    Calculates profile curvature from a digital elevation model.

  • Relative Aspect

    wasm

    Calculates relative aspect from a digital elevation model.

  • Ring Curvature

    wasm

    Calculates ring curvature from a digital elevation model.

  • Rotor

    wasm

    Calculates rotor from a digital elevation model.

  • Shape Index

    wasm

    Calculates shape index from a digital elevation model.

  • Slope

    wasm

    Calculates the slope of each cell in a DEM.

  • Tangential Curvature

    wasm

    Calculates tangential curvature from a digital elevation model.

  • Total Curvature

    wasm

    Calculates total curvature from a digital elevation model.

  • Unsphericity

    wasm

    Calculates unsphericity from a digital elevation model.

  • Vertical Excess Curvature

    wasm

    Calculates vertical excess curvature from a digital elevation model.

Landform Indices

7 features
  • Elevation Relative To Min Max

    wasm

    Expresses each elevation as a percentage relative to the DEM's minimum and maximum.

  • Geomorphons

    wasm

    Calculates geomorphons from a digital elevation model.

  • Hypsometric Analysis

    wasm

    Performs hypsometric analysis on a digital elevation model.

  • Multiscale Topographic Position Class

    wasm

    Calculates multiscale topographic position class from a digital elevation model.

  • Pennock Landform Classification

    wasm

    Calculates Pennock landform classification from a digital elevation model.

  • Percent Elevation Range

    wasm

    Calculates percent elevation range from a digital elevation model.

  • Relative Topographic Position

    wasm

    Calculates relative topographic position from a digital elevation model.

Multiscale Signatures

15 features
  • Max Anisotropy Deviation

    wasm

    Calculates maximum anisotropy deviation of the terrain from a digital elevation model.

  • Max Anisotropy Deviation Signature

    wasm

    Generates a maximum anisotropy deviation signature from a digital elevation model.

  • Max Difference From Mean

    wasm

    Calculates maximum difference from mean from a digital elevation model.

  • Max Elevation Deviation Signature

    wasm

    Calculates maximum elevation deviation at multiple scales to characterize terrain features.

  • Max Elevation Deviation

    wasm

    Calculates maximum elevation deviation from a digital elevation model.

  • Multiscale Curvatures

    wasm

    Calculates multiscale curvatures from a digital elevation model.

  • Multiscale Elevated Index

    wasm

    Calculates a multiscale elevated index from a digital elevation model.

  • Multiscale Elevation Percentile

    wasm

    Calculates multiscale elevation percentile from a digital elevation model.

  • Multiscale Low-Lying Index

    wasm

    Calculates a multiscale low-lying index from a digital elevation model.

  • Multiscale Roughness

    wasm

    Calculates multiscale roughness from a digital elevation model.

  • Multiscale Roughness Signature

    wasm

    Calculates a multiscale roughness signature from a digital elevation model.

  • Multiscale Std Dev Normals

    wasm

    Calculates spherical standard deviation of terrain normals at multiple scales, outputting its maximum and associated scale.

  • Multiscale Std Dev Normals Signature

    wasm

    Extracts point-based per-scale standard deviation of normals signatures and saves them as an HTML plot.

  • Multiscale Topographic Position Image

    wasm

    Calculates a multiscale topographic position image to characterize relief, local landforms, or surface behavior.

  • Topographic Position Animation

    wasm

    Calculates a topographic position animation from a digital elevation model.

Roughness & Texture

6 features
  • Average Normal Vector Angular Deviation

    wasm

    Calculates average angular deviation of the normal vector from a digital elevation model.

  • Circular Variance of Aspect

    wasm

    Calculates circular variance of aspect from a digital elevation model.

  • Edge Density

    wasm

    Calculates edge density from a digital elevation model.

  • Ruggedness Index

    wasm

    Calculates a terrain ruggedness index from elevation differences between neighboring cells.

  • Spherical Std Dev of Normals

    wasm

    Calculates spherical standard deviation of normals in a window to measure surface roughness and complexity.

  • Standard Deviation of Slope

    wasm

    Calculates standard deviation of slope from a digital elevation model.

Visibility

11 features
  • Average Horizon Distance

    wasm

    Calculates average horizon distance from a digital elevation model.

  • Horizon Angle

    wasm

    Calculates horizon angle from a digital elevation model.

  • Horizon Area

    wasm

    Calculates horizon area from a digital elevation model.

  • Openness

    wasm

    Calculates openness from a digital elevation model.

  • Shadow Animation

    wasm

    Calculates a shadow animation from a digital elevation model.

  • Shadow Image

    wasm

    Calculates a shadow image to characterize relief, local landforms, or surface behavior.

  • Sky View Factor

    wasm

    Calculates sky view factor from a digital elevation model.

  • Skyline Analysis

    wasm

    Performs skyline analysis from a digital elevation model.

  • Time In Daylight

    wasm

    Calculates time in daylight from a digital elevation model.

  • Viewshed

    wasm

    Determines areas visible from observation points on a digital elevation model.

  • Visibility Index

    wasm

    Calculates a visibility index from a digital elevation model.

Workflow Products

1 features
  • Topo Render

    wasm

    Generates a cartographic representation of relief from a DEM to visualize topographic forms and slopes.