Class - MD_BrowseGraphic
Geospatial data and service are largely visual by nature. Geospatial practicianers tend to be visually oriented. Browse graphics are a way of including in the metadata visual clues as to the nature and usefulness of resources.
- Governance - ISO
- Metadata type - discriptive
- ICSM Level of Agreement - ⭑⭑
Definition
A graphic that provides an illustration of a resource
NOTE - Should include a legend for the graphic, if applicable.
EXAMPLE - A dataset, an organisation logo, security constraint or citationgraphic..
ISO Obligation
In a metadata record there should be zero to many {0..*] graphicOverview packages of class MD_BrowseGraphic describing a resource. These should typically include the name linkage to the graphic.
Recommended Sub Elements
- fileName - (type - CharStr) Mandatory - name of the file that contains a graphic that provides an illustration of the resource.
- linkage - (class - CI_OnlineResource) 0 to many - link to browse graphic.
- Optional
- imageConstraints - (class - MD_Constraints) 0 to many - restriction on access and/or use of browse graphic
- fileType - (type - CharStr) f0 to 1 - format in which the illustration is encoded (e.g.: EPS, GIF, JPEG, PBM, PS, TIFF, PDF)
- extent - (class - EX_Extent) Information about the horizontal, vertical and temporal extent of the resource specified by the scope
Discussion
Geospatial professionals by nature, rely to a large extent on visual information to gain understanding of resources. Browse graphics provide in the metadata a way to communicate with users visually.
ICSM Best Practice Recommendations
Therefore - in order to provide a quick way for users to discover and identify the resource they need, provide a graphic overview in the metadata. At a minimum this should include a name and link to the image.
Crosswalk considerations
ISO19139
browseGraphic is a new package in iso19115-1. New elements include:
- MD_BrowseGraphic.imageConstraint (class - MD_Constraints)
- This new element was added in order to allow the specification of constraints on a browse graphic associated with a resource.
- MD_BrowseGraphic.linkage (class - CI_OnlineResource
- This new element was added in order to allow a straightforward specification of the link to the browse graphic and the capability to add additionalinformation (name, description, …) about that graphic.
Also Consider
- CI_OnLineFunctionCode - A property of CI OnlineResource. This codelist contains an option browseGraphic
Examples
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UML diagrams
Recommended elements highlighted in yellow
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