The North American Profile of ISO 19115:2003 – Geographic information – Metadata (NAP – Metadata, version 1.2), referred to here as the NAP, promotes interoperability of metadata with regard to discovering, accessing, evaluating, and transferring geographic datasets and services in North America. The NAP defines a subset of the metadata elements described in ISO 19115 and ISO 19139 to use and extends the list of values included in several code lists to help describe items. This guide describes the workflows for editing metadata in ArcGIS Pro to produce content that complies with the ISO 19115 and ISO 19139 metadata standards as well as the NAP.
Configure ArcGIS Pro
The first step toward creating metadata content that complies with the NAP is to configure ArcGIS Pro correctly. On the Options dialog box, choose North American Profile of ISO 19115 2003 in the Metadata style drop-down list.
When you edit metadata in the metadata view, the validation errors you see are based on rules defined in the NAP that include and expand on the rules for creating valid ISO 19115 and ISO 19139 metadata. When you view an item's metadata in the catalog view, all of its metadata content is displayed.
If the metadata style set in ArcGIS Pro doesn't match the metadata style used by your organization and by ArcGIS Desktop, you may see inconsistencies when you view and edit metadata throughout the ArcGIS platform.
Edit NAP metadata content
You can create full ISO 19115 and ISO 19139 metadata for an item that also complies with the NAP in ArcGIS Pro. To get started, complete the following steps:
- Edit an item's metadata in the metadata view.The metadata view appears, displaying the first metadata editor page. All pages available for editing metadata are listed in the Contents pane.
- Click each page in the Contents pane where required content is identified as being missing and provide the appropriate content.
When all required content has been provided the page will be identified in the Contents pane as being valid .
- Apply or save your changes as appropriate.
It may take some time to complete an item's metadata. You can save your changes and finish the remainder at a later time, even if required information is missing. The next time you work on the project, the metadata view will be open to the page you worked on last.
- Close the metadata view when your work is complete.
Create NAP-compliant metadata
The following table describes where you can find each of the minimum mandatory NAP, ISO 19115, and ISO 19139 metadata elements. You're not limited to providing the information below; this information is provided to help you get started. If information beyond the minimum is provided, additional content may be required to complement that information according to the standards.
The NAP contains tables where each metadata element and the rules associated with it are defined. The numbers in the following table are the Clause numbers in those tables, identifying the appropriate row in the appropriate table for that metadata element.
|Metadata editor page||Steps to fulfill NAP and ISO 19115 and 19139 requirements|
|Overview > Item Description|
|Overview > Topics & Keywords|
|Overview > Citation|
|Overview > Citation Contacts|
|Metadata > Details|
|Metadata > Contacts|
|Resource > Details|
|Resource > Service Details|
|Resource > Extents|
|Resource > Spatial Reference|
Best practices for authoring NAP content in ArcGIS
ArcGIS allows you to create a full ISO 19115 and 19139 metadata record to describe an item that's also NAP-compliant. However, there are a few differences between the NAP instructions and how you should provide the corresponding information in ArcGIS. By following some best practices, the metadata you create in ArcGIS will be accurate and easier to maintain and will transition seamlessly to other metadata styles and formats in the future.
Inapplicable or unknown values
When a metadata element's value is unknown or inapplicable, leave its value blank when you edit metadata in ArcGIS. If a mandatory metadata element is left blank in ArcGIS and metadata is exported to an ISO 19139-formatted XML file using other applications in the ArcGIS platform, a nilReason code will be added automatically in a manner that satisfies the ISO 19139 XML schemas to indicate that the value is missing or unknown. Other metadata standards have similar requirements, but different elements are considered mandatory and the manner in which the uncertainty or absence of a value is indicated in the exported XML file is different. Exporters for each style handle the situation in an appropriate manner.
Content defined by the metadata style
A metadata style configures ArcGIS to support a specific metadata standard or profile. Each metadata standard typically has metadata elements to record the name and version of the standard that was followed, how the metadata content was recorded, and so on. Exporters for each style handle the situation in an appropriate manner. When metadata is exported to a NAP-compliant ISO 19139-formatted XML file using other applications in the ArcGIS platform, the mandatory metadataStandardName element and the optional metadataStandardVersion element are added at that time.
Content that can't or shouldn't be edited
For most items, ArcGIS automatically records the item's intrinsic properties in its metadata as appropriate. For example, if an item's spatial reference is set, full details of that spatial reference are recorded in its metadata. Detailed spatial reference properties can't be edited manually in the metadata view. This ensures the metadata reflects the item's actual spatial reference. With other metadata styles, you can manually provide information about an item's spatial reference for items that don't support synchronization, but you can only do so by providing the spatial reference identifier. The properties of the spatial reference are fixed for that identifier, and they can be examined in the appropriate registry where they're defined; individual spatial reference parameters are not manually typed into an item's metadata.
For other properties, such as an item's feature count, raster size, or attribute labels, it's possible to change the information derived from the item when editing metadata in ArcGIS. However, these values should be left unaltered. As long as these values aren't edited in the metadata view, ArcGIS will continue to update them as the item's properties change and they'll remain accurate. For example, if attributes are provided in an item's metadata but their names don't match field names in the item's attribute table, they'll be removed from the item's metadata the next time it's synchronized with the item's intrinsic properties.
The ArcGIS metadata editor automatically provides the current date as the date when the metadata was last updated, and the appropriate character set value describing how metadata created by ArcGIS is encoded. These values typically should not be modified. However, if you're transcribing metadata that describes an archived item, for example, you may want to change the metadata date to reflect the date when the metadata content was originally authored.
Export metadata to the ISO 19139 XML format
If you need to provide information about an item to people or organizations outside the ArcGIS platform, you can export the item's metadata to a stand-alone metadata file in the ISO 19139 XML format. When ArcGIS Pro is set to use the North American Profile of ISO 19115 2003 style, the item's metadata will be exported by default to the NAP version of the ISO 19139 XML format.
- On the Catalog tab on the ribbon, in the Metadata group, click Export .
The Export Metadata dialog box appears.
- Click The metadata content to export drop-down list and click the amount of content to filter out of the item's metadata during the export process.
- All Supported Content—The item's metadata is not filtered.
- Without Machine Names—The item's metadata content is filtered to remove any machine names that may exist. Appropriate actions are taken depending on the context in which the machine name is found. The metadata element will be removed if it doesn't cause the document to be invalid, the machine name will be removed from the beginning of a UNC path, or the value will be changed to identify the location as being withheld.
- Without Sensitive Information—Machine names are filtered as described above. Additionally, local and network file paths, and internet locations other than http or https addresses are removed in the same manner. Operating system information, database information, and geoprocessing history are also removed.
- Confirm that Current style (NAP) is selected in The type of metadata to export drop-down list.
- Browse to or type the location and name of the XML file that will be created in the Export metadata to text box.
- Click OK.
The filtered ArcGIS metadata elements are matched to the appropriate ISO 19139 metadata elements with the modifications required by the NAP profile, and their content is transferred to an ISO 19139-format XML file. ArcGIS metadata includes content that's not included in the ISO 19139 standard, such as thumbnails and descriptions of the fields in an attribute table; this content can't be included in an ISO 19139-format XML file.