diagrammid

Diagrammid is an intermediate representation used in diagramming and data-visualization workflows. It describes the structural elements of a diagram—such as nodes, edges, groups, and annotations—along with layout hints and rendering directives, while abstracting away from the source data format and the final rendering engine. The term suggests a mid-level layer that sits between high-level diagram concepts and concrete presentation.

Core features typically associated with Diagrammid include a hierarchical scene graph, support for attributes (labels, colors, sizes), layout constraints, and optional rendering directives for different backends. Diagrammid files or streams can be serialized in multiple formats, commonly JSON or YAML, and are designed to be consumed by diagram renderers or export tools. The intended use is to enable tool interoperability: data producers can emit Diagrammid, and multiple rendering engines can interpret it to generate charts, flow diagrams, or network graphs without re-encoding semantic information.

Adoption and context vary. Diagrammid is not a universally standardized format, and implementations differ in schema and feature support. It is often discussed in relation to domain-specific languages for diagrams (such as DOT or PlantUML) and broader intermediate representations used in graphics pipelines. The goal of Diagrammid is to separate data, diagram semantics, and presentation, enabling reuse, caching, and cross-tool workflows. In practice, its use tends to reflect community practices and project needs rather than formal consensus. See also: diagram languages, Graphviz DOT, UML diagrams, data visualization pipelines.