Glossary

Say what you mean. Mean what you say.

Actor

Represents an object (geometry and properties) in a rendered scene. See vtkActor.

Base Layer

A surface mesh that may be texture mapped, and lies beneath another mesh typically to fill holes in that mesh.

CRS

Abbreviation. See Coordinate Reference System.

Cell

A cell is the geometry between points that defines the connectivity or topology of a mesh. See What is a Cell?

Connectivity

An array of offsets that index into an array of points to define how cells are constructed from those points.

Coordinate Reference System

A Coordinate Reference System defines how your geo-referenced spatial data relates to real locations on the Earth’s surface. Abbreviated to CRS.

曲線グリッド

For example, a qudrilateral-cell surface that can be created from an array of 2D x and y spatial points.

Environment

A pixi environment is a collection of one or more features that encapsulate its dependencies, configurations and tasks. Environments can be installed and activated to run tasks. Our environments are defined under the [tool.pixi.environments] table in the pyproject.toml manifest. See these design considerations for further details.

Face

A polygonal cell in a mesh geometry. Also see Cell.

Feature

A pixi feature defines part of an environment and may contain dependencies, platforms, channels, tasks and various other configurations. Our features are defined under [tools.pixi.feature.<feature-name>.*] tables in the pyproject.toml manifest. See these design considerations for further details.

GHA

Abbreviation. See GitHub Action.

GitHub Action

A feature offered by GitHub that provides Continuous Integration (CI), Continuous Deployment (CD) and task automation workflows within a GitHub repository.

Land Mask

Typically a boolean array used to indicate the cells in a mesh that represent land.

Manifold

A water-tight, closed geometric structure e.g., a sphere.

Mesh

A spatially referenced dataset that may be a surface or volume in 3D space. See What is a Mesh?

MyST

Abbreviation for Markedly Structured Text. MyST is a rich and extensible flavour of Markdown for authoring technical and scientific documents. See myst-nb and myst-parser from the Executable Books organisation.

Node

Nodes are the vertices of a mesh. Also see Point.

Perceptually Uniform Colormap

A colormap in which equal steps in data are perceived as equal steps in the color space.

Point

Points are the vertices of the mesh, also referred to as the Cartesian coordinates of the underlying structure. See What is a Point?

直線グリッド

For example, a quadrilateral-cell surface that can be created from an array of 1D x and y spatial points.

Sea Mask

Typically a boolean array used to indicate the cells in a mesh that represent water e.g., river, lake, sea, ocean.

Task

A pixi task is defined as part of a feature to perform a cross-platform workflow command within an environment. Tasks are defined under the [tool.pixi.feature.<feature-name>.tasks.<task-name>] table in the pyproject.toml manifest. See the tasks documentation for for further details.

Texture Map

A graphical technique where a raster image is wrapped over the surface of a geometric object.

Threshold

To remove the cells from a mesh based on criteria of data associated with the mesh cells or points. See PyVista threshold.

非構造化メッシュ

A surface that is created from a geometry of points and a topology of indices that define how cells are constructed from those points. See Connectivity.

Warp

Extrude the points in a mesh by a proportional amount along the surface normals. See PyVista warp_by_scalar.