Creating, Playing with DataArrays, Meshes and Fields with the MEDCoupling library

The objective of these exercises is to learn to manipulate MEDCoupling objects in Python.

• the first exercise shows how to manipulate DataArrayDouble objects,
• the second shows how to manipulate MEDCouplingUMesh objects,
• and the third shows how to manipulate MEDCouplingFieldDouble objects.

• Manipulate DataArray objects
  • Objective
  • Starting the implementation
  • Create a DataArrayDouble instance containing 6 tuples
  • Initialize an instance of DataArrayDouble
  • Duplication and aggregation of DataArrayDouble
  • Aggregating DataArrayDouble
  • Find identical tuples in d2
  • Manipulate DataArrayInt couple representing a pair (Data,IndexData)
  • Build old to new array from c and cI
  • Translate all tuples at once
  • Build an unstructured mesh using d3 (coordinates) and o2n
  • Solution
• Playing with unstructured mesh
  • Objective
  • Implementation start
  • Convert coordinate unit from meters to centimeters
  • Find the different Z levels in mesh3D and sort in increasing order
  • Extract the 6 cells of the second row along Oz
  • Extract a sub-part of mesh3D
  • Extract the 3 cells in mesh3D whose barycenters are along the line (pt=[250.,150.,0.],v=[0.,0.,1.])
  • Duplicate “mesh3DSlice2” and translate it
  • Descending connectivity
  • Solution
• Playing with fields
  • Objective
  • Implementation start
  • Creation of a field
  • Builing of a subpart of a field
  • Renumbering cells
  • Aggregate Fields
  • Evaluation of a MEDCouplingFieldDouble on given space points
  • Operations on a field
  • Exploding a field
  • Solution