From Provenance WG Wiki
PROV Graph Layout Conventions
It is recommended to follow the following conventions to display PROV graphs.
PROV diagramming style materials available at http://dvcs.w3.org/hg/prov/file/tip/diagrams/style
Coloring and shape
Entities, activities and agents are represented as nodes, with oval, rectangular, and octagonal shapes, respectively. Usage, Generation, Derivation, and Activity Association are represented as directed edges.
Note that more saturated fill colors make it more difficult to read the text within the node.
- Entities are yellow ovals
- Saturated: (255, 252, 135) or #FFFC87
- Desaturated: (255, 253, 229)
- Stroke: medium gray (128, 128, 128)
- Activities are blue rectangles
- Saturated: (159, 177, 252) or #9FB1FC
- Desaturated: (216, 217, 254)
- Stroke: blue (0, 0, 255)
- Agents are orange "pentagon houses" (alternatively, upward isosceles triangles)
- Super-Saturated: (253, 178, 102)
- Saturated: (254, 211, 127) or #FED37F
- Desaturated: (253, 238, 205)
- Stroke: black (0, 0, 0)
Entities are laid out according to the ordering of their generation. We endeavor to show time progressing from left to right. This means that edges for Usage, Generation, Derivation, Association typically point leftwards.
Alternatively, time going downward if it's more convenient.
Arrows point "back into the past".