Annotation

Annotation[expr,data]

represents an expression expr, with annotation data.

Annotation[expr,data,"type"]

specifies the type of annotation being given.

Annotation[items,keyvalue]

associates keyvalue pairs with items in objects such as Graph, MeshRegion etc.

Details

  • Annotation[expr,…] displays in a notebook as expr.
  • Annotation acts as an inert wrapper for storing annotations in expressions.
  • Annotation can be used with graphics or any other expression.
  • With particular "type" specifications, annotations are picked up by various built-in functions:
  • "Hyperlink"hyperlink for exported image maps etc.
    "Mouse"annotation for MouseAnnotation
    "Region"regions for Rasterize, Export, etc.
    "Tooltip"tooltip specification for Export etc.
  • With keyvalue specifications, annotations are associated to items in various objects:
  • Audiotime points and time intervals
    BoundaryMeshRegionmesh cells
    CSGRegiongeometric regions
    Graphvertices and edges
    MeshRegionmesh cells

Examples

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Basic Examples  (3)

Dynamically get the annotation when the mouse enters the disk:

Annotate an edge in a graph:

Retrieve the annotation:

Annotate curves in a plot and display a label when the mouse pointer is over a curve:

Scope  (8)

Basic Uses  (5)

Store annotations in an expression:

Retrieve expressions with specific annotations:

Annotate an edge in a graph:

Annotate curves in a plot:

Add a hyperlink to any part of the expression when converting to an HTML file:

Use Rasterize to find the position of the annotated object within the image:

Specifications  (3)

Annotate an expression:

Specify the type of annotation:

Associate key and value pairs to objects:

Applications  (6)

Graphs  (2)

Build a graph with VertexSize and VertexStyle annotations on vertices:

Use Annotation to specify the weight for individual edges:

The list of edge weights in the order given in the graph:

Export  (2)

Add a hyperlink to any part of the expression when converting to an HTML file:

Add a tooltip to any part of the expression when converting to an HTML file:

Rasterize  (2)

Rasterize returns a graphical depiction of the object and is used within Export:

Use Rasterize to find the position of the annotated object within the image:

Rasterize will take any expression as input:

Automatically find the location of multiple expressions:

Properties & Relations  (1)

Tooltip and Hyperlink annotations can be replaced by their respective functions:

An equivalent expression:

Wolfram Research (2007), Annotation, Wolfram Language function, https://reference.wolfram.com/language/ref/Annotation.html (updated 2025).

Text

Wolfram Research (2007), Annotation, Wolfram Language function, https://reference.wolfram.com/language/ref/Annotation.html (updated 2025).

CMS

Wolfram Language. 2007. "Annotation." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2025. https://reference.wolfram.com/language/ref/Annotation.html.

APA

Wolfram Language. (2007). Annotation. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Annotation.html

BibTeX

@misc{reference.wolfram_2024_annotation, author="Wolfram Research", title="{Annotation}", year="2025", howpublished="\url{https://reference.wolfram.com/language/ref/Annotation.html}", note=[Accessed: 20-January-2025 ]}

BibLaTeX

@online{reference.wolfram_2024_annotation, organization={Wolfram Research}, title={Annotation}, year={2025}, url={https://reference.wolfram.com/language/ref/Annotation.html}, note=[Accessed: 20-January-2025 ]}