Object descriptions

These tutorials describe the main objects of the library.

• WolfArray, what is it?
  • Basics
  • Numpy Considerations
  • Viewer Compatibility
  • Plotting
  • Python/Fortran
  • Data types
  • How to create a WolfArray?
  • Type order - C or F ?
  • NoData/NullValue, bounds, plot…
• 2D cell indices
  • Creation of a 2D grid
  • Viewing the Grid as Coordinates/Georeferenced item
  • Cell/Mesh Numbering
  • Edge Numbering
  • Shape
  • Fortran/Python Numbering
  • Exploring a More Complex Grid Configuration
• Memory Organization of NumPy Arrays
  • Fortran or C Numpy array - Why is it important?
  • Multiple conventions
  • Contiguous memory
  • Axis, what is it?
  • Is One Axis Faster?
  • Observation
• Memory/Matrice view
  • Matrice View - Fortran Numbering (1-Based)
  • Matrice view - Python numbering (0-based)
  • Coordinates equivalence
  • WolfArray is F_CONTIGUOUS
  • Shape (nbx, nby) or (nby, nbx)?
  • Memory organization of a NumPy array in C_CONTIGUOUS order
  • Difference Between C_CONTIGUOUS and F_CONTIGUOUS
  • Test on a small example
• WolfArray - Data type
  • Using “whichtype” during WolfArray creation
  • Get equivalent Numpy type
  • Modifying Values in a WolfArray
  • Type conversion
  • Representation Space
  • Memory consumption
• Basic math operations on WolfArray
  • Examples of math operations
  • Working with Masked Arrays
  • Is a masked value equivalent to NoData/NullValue ?
• Redimensionner un WolfArray
  • Chargement d’un modèle numérique de terrain
  • Changement de résolution vers 10m x 10m
  • Une augmentation de la résolution est aussi possible
  • Anticiper les informations sans effectuer le rebin
  • Si le rebin n’est pas possible
• Multiblock Arrays
  • Creating a Multiblock Array from scratch
  • By Reference or By Value?
  • Accessing the Blocks
  • Convert to WolfArray “single” block
  • And More…
• Zones, zone, vector, vertex, What is it ?
  • Basics
  • Formats
  • Interaction with Shapely
  • Create a wolfvertex
  • Create a vector
  • Plot a vector
  • Create a zone
  • Plot a zone
  • Create a Zones
  • Plot a Zones
  • Save a Zones to file
• Cloud vertices, What is it ?
  • Basics
  • Storage
  • Properties
  • KD-tree
  • Create a new cloud_vertices instance
  • Plot by matplotlib
  • Get coordinates of the vertices
  • Add a value
  • Get coordinates but value as z
  • Find the nearest vertex
  • Find the nearest vertices
  • Find the nearest vertex for multiple points
• Triangulation
  • Basics example
  • Plot with Pyvista
  • Interpolate on array
  • Creation from vectors/zone
  • Constrained Delaunay Triangulation
• Profile, what is it?
  • Basics
  • Import
  • How to create a profile?
  • Exemple 1 : a large section
  • Exemple 2 : a small section
  • Example 3 : a rectangular one
  • How to access the geometry ?
  • Area, Wetted Perimeter, Top-Width, Uniform Manning-Strickler relations, critical depth and discharges
  • Plotting the relations
  • Add “banks” position
  • Add more positions - “bed”, “left_down”, “right_down”
  • Uniform Manning-Strickler Discharge / Water Depth
  • A more complex cross-section
  • Compare the section with the tables and LAZ data.
• Crosssections, What is it ?
  • Basics
  • Import
  • How to initialize?
  • Stored information
  • Dependencies
  • Sorting along a vector
  • Example
  • How to plot ?
  • Sort along
  • Upstream/Downstream profile
  • Iterate from profile to up/down
  • Select profile
  • And more…
• Paramètre de Shields
  • Le diagramme de Shields
  • Implémentation en Python
  • Import des modules
  • Shields critique
  • Graphiques
  • Détermination du paramètre critique sur base du diamètre des sédiments
  • Détermination du diamètre critique des sédiments sur base de la tension de cisaillement
  • Exemple de calcul avec Manning-Strickler
  • Exemple avec Colebrook-White
  • Mise en suspension et mode de transport