Resource Graphic Overview ★★★
Geospatial data and service are largely visual by nature. Geospatial practitioners 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.
Element Name | graphicOverview |
Parent | MD_Metadata.identificationInfo>MD_Identification |
Class/Type | MD_BrowseGraphic |
Governance | Common ICSM, Agency, Domain |
Purpose | Discovery, Identification |
Audience | machine resource - ⭑ |
general - ⭑ ⭑ ⭑ ⭑ ⭑ | |
resource manager - ⭑ ⭑ | |
specialist - ⭑ ⭑ ⭑ | |
Metadata type | descriptive |
ICSM Level of Agreement | ⭑ ⭑ ⭑ |
Definition
A graphic that provides an illustration of a resource
ISO Obligation
In a metadata record there should be zero to many [0..*] graphicOverview packages for the cited resource in the MD_DataIdentification package of class MD_BrowseGraphic in a metadata record.
Discussion
Geospatial professionals by nature, rely to a large extent on visual information to gain an understanding of resources. Browse graphics provide in the metadata a way to communicate with users visually.
NOTE - Should include a legend for the graphic, if applicable.
EXAMPLE - A dataset thumbnail image, an organisation logo, security constraint or citation graphic.
ICSM Best Practice Recommendations
Therefore - to provide a quick way for users to discover and identify the resource they need, provide a graphic overview of the resource. At a minimum, this should include a name and link to an image.
Recommended Sub-Elements
From class MD_BrowseGraphic
- fileName - (type - CharStr) [1..1] Mandatory for browse graphic elements - name of the file that contains a graphic that provides an illustration of the resource.
- linkage - (class - CI_OnlineResource) [0..*] - link to browse graphic.
- Optional:
- imageConstraints - (class - MD_Constraints) [0..*] - restriction on access and/or use of browse graphic
- fileType - (type - CharStr) [0..*] - format in which the illustration is encoded (e.g.: EPS, GIF, JPEG, PBM, PS, TIFF, PDF)
Also Consider
- MD_BrowseGraphic - associates to a large number of packages for different purposes, such as business or product icons and logos
- CI_OnLineFunctionCode - This codelist contains an option browseGraphic
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.
Examples
XML -
<mdb:MD_Metadata>
....
<mdb:identificationInfo>
<mri:MD_DataIdentification>
<mri:citation>
<cit:CI_Citation>
....
<cit:graphic>
<mcc:MD_BrowseGraphic>
<mcc:fileName>
<gco:CharacterString>
https://static.wixstatic.com/media
/414fd2_2f712656fb5547f39a08a53aab98cc29~mv2.png/v1
/fill/w_92,h_146,al_c,q_80,usm_0.66_1.00_0.01
/IFaGR9yg.webp</gco:CharacterString>
</mcc:fileName>
<mcc:linkage>
<cit:CI_OnlineResource>
<cit:linkage>
<gco:CharacterString>
https://static.wixstatic.com/media
/414fd2_2f712656fb5547f39a08a53aab98cc29~mv2.png
/v1/fill/w_92,h_146,al_c,q_80,usm_0.66_1.00_0.01
/IFaGR9yg.webp
</gco:CharacterString>
</cit:linkage>
<cit:protocol>
<gco:CharacterString>
WWW:LINK-1.0-http--link
</gco:CharacterString>
</cit:protocol>
<cit:name gco:nilReason="missing">
<gco:CharacterString/>
</cit:name>
<cit:description gco:nilReason="missing">
<gco:CharacterString/>
</cit:description>
<cit:function>
<cit:CI_OnLineFunctionCode codeList=
"https://schemas.isotc211.org/19115/resources
/Codelist/cat/codelists.xml#CI_OnLineFunctionCode"
codeListValue="browseGraphic"/>
</cit:function>
</cit:CI_OnlineResource>
</mcc:linkage>
</mcc:MD_BrowseGraphic>
....
</cit:CI_Citation>
</mri:citation>
</mri:MD_DataIdentification>
</mdb:identificationInfo>
....
</mdb:MD_Metadata>
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UML diagrams
Recommended elements highlighted in yellow
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