Mesh Representation (pysit.core.mesh_representation)

Note

This section of the documentation is under construction. The source, however, is documented and you can access that via the Reference/API section.

Introduction

A PySIT mesh representation is an abstract specification of how a physical object exists on a computational mesh. For example, how is a point (a delta) represented?

This serves as a base class for both pysit.core.sources.PointSource and pysit.core.sources.PointReceiver and defines both sampling and adjoint sampling for both data types.

Getting Started

• Inheriting a mesh representation

Using mesh_representation

More details

Point Representations

• Sampling operators
• Sampling data from a wavefield

Delta Approximations

• Numerical delta (details and caveats)
• Gaussian delta (details and caveats)

Sparse or Dense?

• Use sparse, in general
• Dense is faster for small things and 1D

Extending mesh_representation

• Define sampling_operator attribute
• Define adjoint_sampling_operator attribute

Reference/API

pysit.core.mesh_representation Module

Classes

MeshRepresentationBase(mesh, **kwargs)	Base class for representing an object on a (Cartesian) grid.
PointRepresentationBase(mesh, pos[, …])	Base class for representing a point (or delta) on a grid.