Land and Infrastructure DWG


Granholm, Leif (Trimble, Inc.) - Group Chair

Group Description:

1. Key Activities

The DWG will focus on the following activities:

  1. Reviewing the current LandXML schema and determining how best to continue to support the existing users and engage with them.
  2. Assessing the current industry support for the LandXML schema and whether multiple, incompatible versions of the schema have evolved.
  3. Investigating how to best incorporate LandXML into the OGC standards framework, including identifying places where there may be common elements in existing standards such as CityGML.
  4. Investigating the possibility of moving the LandXML schema into LandGML.
  5. Other efforts to integrate land information contained in various CAD formats into the OGC standards framework.


2.    Business Case

The LandXML community consists of over 650 organizations with 750 members in over 40 countries. There are over 70 registered software products that supported LandXML as of 2009.

A need exists for an organization like the OGC to assume the management of the LandXML schema and leverage the work that has been done over almost 10 years in developing the user community. This community is currently unsupported and not able to make complete use of the potential benefits that can come from active support of the schema and integration with other related OGC standards.

By the OGC adopting the LandXML schema, the user community will be assured of a formal process for maintaining, improving, documenting and in fact, formalizing the standard. This will lead to new opportunities for integration with other related OGC standards.

There will likely be other opportunities where CAD-based land information can be incorporated into the OGC standards framework as the process proceeds.

3.    Organizational Approach and Scope of Work

3.1    Land Development DWG Business Goals

The Land Development DWG will need to establish a set of business goals that frame the basis for determining the nature and type of recommendations made to OGC, framed around the above mentioned business issues.  Examples of the types of discussion for framing goals include

  1. Efforts should focus on working land information issues and problems that result in a net gain for the community.
  2. Minimize technical distinctions between land information data processing systems that use geography, as this can lead to artificial barriers that limit the potential of all segments of the information community to come together and fully prosper.
  3. Avoid placing artificial technical barriers on use of land information data.
  4. Establish the means by which OGC can achieve interoperability and yet preserve the proprietary nature of data.
  5. Define the supporting infrastructure for the community to achieve these goals.

3.2    Land Development: Mission and Role

The mission of the Land Development DWG is to determine the best approach for the OGC to become the standards organization responsible for the LandXML data schema. Our role is to explore the potential options and determine the most appropriate method for supporting LandXML data types within the OGC data standards framework, as well as other land information that is currently not integrated with this framework.

3.3    Activities planned for Land Development

The Land Development DWG has the following activities planned:

  1. Assess the feasibility of moving the LandXML Schema into LandGML.
  2. Engage the existing LandXML user community to identify current satisfaction with the schema and to understand desired enhancements.
  3. Develop a demonstration project to test the proposed strategy.
  4. Research and identify other opportunities for better integration of land information within the OGC standards framework.
  5. Identify and report places where there may be overlap of content with other standards, such as CityGML and propose mechanisms to insure lossless exchange of data where appropriate.
  6. If successful, develop a plan for working with the LandXML user community to obtain their input and support for the new standard.