Matpack

Our general purpose multidimensional array C++ library is called Matpack. It is based on std::mdspan (or rather the experimental version of it) and provides an interface to create any kind of contiguous multidimensional array.

The core classes are the three data classes - Sparse, data_t and cdata_t - and the two view classes - view_t and strided_view_t. There are also helper classes for sorted grids, gridded data, and band matrices.

• Sparse matrices
  • Relevant files
• Multidimensional data
  • data_t
  • cdata_t
  • Relevant files
• Multidimensional views
  • Member methods
  • Accessing data - operator[]
  • Relevant files
• Interpolation in ARTS
  • Linear interpolation
  • Higher order interpolation
• Sorted grids
  • Extending a grid
  • Relevant files
• Gridded data
  • Member methods
  • Interpolation
  • Relevant files
• Band matrices
  • Relevant files

Tip

It is fairly trivial to map the Matpack classes to numpy arrays for the python interface. A lot of code for this is already in place. If you need to add a new class to Matpack, please see the existing classes and add this interface to your new class as well. It helps a lot :)