xDEM aims at making the analysis of digital elevation models easy, modular and robust.

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Where to start?

About xDEM

Learn more about why we developed xDEM.

Learn more »

About xDEM

Quick start

Run a short example of the package functionalities.

Learn more »

Quick start

Features

Dive into the full documentation.

Learn more »

Vertical referencing

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Important

xDEM is in early stages of development and its features might evolve rapidly. Note the version you are working on for reproducibility! We are working on making features fully consistent for the first long-term release v0.1 (planned early 2024).

Getting started

• About xDEM
• The people behind xDEM
• How to install
  • Installing with mamba (recommended)
  • Installing with pip
  • Installing for contributors
• Quick start
  • Short example
  • More examples

Background

• The need for robust statistics
  • Measures of central tendency and dispersion
  • Measures of spatial autocorrelation
  • Regression analysis
• Analysis of accuracy and precision
  • Accuracy and precision
  • Absolute or relative accuracy
  • Optimizing DEM absolute accuracy
  • Optimizing DEM relative accuracy
  • Quantifying DEM precision

Features

• Elevation data objects
  • The digital elevation model (DEM)
  • The elevation point cloud (EPC)
• Vertical referencing
  • What is a vertical CRS?
  • Methods to manipulate vertical CRSs
  • Automated vertical CRS detection
  • Setting a vertical CRS with convenient user inputs
  • Transforming to another vertical CRS
• Terrain attributes
  • Quick use
  • Slope
  • Aspect
  • Hillshade
  • Curvature
  • Planform curvature
  • Profile curvature
  • Topographic Position Index
  • Terrain Ruggedness Index
  • Roughness
  • Rugosity
  • Fractal roughness
  • Generating multiple attributes at once
• Coregistration
  • Quick use
  • Introduction
  • The Coreg object
  • Nuth and Kääb (2011)
  • Tilt
  • Vertical shift
  • ICP
  • The CoregPipeline object
• Bias correction
  • The BiasCorr object
  • Modular estimators
  • Deramping
  • Directional biases
  • Terrain biases
• Differencing and volume change
  • dDEM interpolation
  • The DEMCollection object
• Uncertainty analysis
  • Spatial statistics for DEM precision estimation
  • Metrics for DEM precision
  • Workflow for DEM precision estimation

Gallery of examples

• Basic
• Advanced

API Reference

• API reference
  • Examples using xdem.DEM
  • DEM
  • dDEM
  • DEMCollection
  • dDEM
  • Coreg
  • Terrain attributes
  • Volume integration methods
  • Fitting methods
  • Filtering methods
  • Spatial statistics methods

Indices and tables

• Index

• Module Index

• Search Page