Open source crusade blocks geospatial standard

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Open source crusade blocks geospatial standard

Esri withdraws its API from standards process.

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An open standard proposal by mapping giant Esri has failed after a backlash from developers within the geospatial community led it to withdraw from the process.

Esri, with around 30 percent market share in geographic information systems (GIS), has over one million users and 350,000 customers, most of whom use its ArcGIS software.

ArcGIS has -  for many users - become a de facto industry standard for creating maps, matching those maps with geospatial data, and using the results in software applications, in much the same way as Microsoft’s Office dominates word processing software.

In early 2011, Esri submitted an API (application programming interface) for ArcGIS (known as the ‘GeoServices REST API’) to standards body the Open Geospatial Consortium for consideration as an ‘open standard’.

Esri proposed that because its GIS server adhered to existing web services standards and because use of the API was freely available via the Open Web Consortium (OWC), it could - much as Microsoft managed to for its OOXML office document format - have it considered an ‘open standard’, all but guaranteeing Esri’s market influence for the foreseeable future.

For a time, it appeared Esri had the full (and somewhat unorthodox) preliminary support of key influencers within OGC standards body. An Esri-branded presentation encouraging the geospatial community to back the proposal, presented in February 2012 and sighted by iTnews, listed OGC president and CEO Mark Reichardt on its opening slide. Reichardt has since informed iTnews that he was listed as a panelist to discuss the proposed standard and was not a co-author, as previously reported.

This presentation described the specification as “a proven and easy to understand method for a broad range of clients and applications to request map, feature, attribute, and image information from a GIS server.”

The OGC - which takes in the views of some 480 member organisations - had long before approved open standards that would achieve much the same result (such as WMS, WFS, WCS, and WPS). But Esri argued that its API reflected the changing needs of today's software developers. Being a JSON-based, RESTful specification, Esri claimed the specification would “make the GIS server instantly usable by thousands of developers working in popular client-side development environments.”

What Esri, its users and partners failed to predict was the backlash from a large and vocal group within the geospatial community that viewed the proposed standard as being in the best interests of a single commercial entity.


Australian software developer Cameron Shorter, the local chair of the Open Source GeoSpatial Foundation, a group which specifically lobbies for the use of open source technologies within the geospatial industry, was among the loudest voices raising concerns over Esri’s candidate (proposed) standard.

Shorter has spent the last few months attempting to disrupt or influence the process - either by writing blog posts or by contacting key OGC members that may not have realised the ramifications of adopting the standard.

Shorter argued that while Esri’s technology and interest in open standards was laudable, approving such a specification as an open standard would do little to improve on existing, genuinely open standards that achieve the same result.

Chris Holmes, a fellow open source advocate, predicted in a blog post that many in the industry did not trust Esri's motives. Holmes worried “[Esri] would embrace the language of open, but not actually do the key things that would make a real open ecosystem” , and that most of what the software company offered as 'open' was “useless without pieces of closed software.”

Shorter wrote to government officials with voting power on the OGC warning them of what he perceived as Esri’s loose definition of ‘open’. Supporting such a proposal would not result in interoperability - the ultimate goal of standards, he said, but the opposite.

Shorter explained to iTnews that dominant vendors often wish to have their proprietary interfaces nominated as ‘open standards’ as government buyers in particular have wised up to the adverse effects of vendor lock-in. 

Should that result in “incompatible duplication” with existing standards, it creates a higher cost for other parties’ solutions to be compatible with both standards, and thus puts existing ones at risk.

In the wash-up, he said, mandating a standard put forward by a commercial vendor is tantamount to a government “providing a vendor with significant market advantage, erring on the creation of a state-sanctioned monopoly."

Read on to find to how open source advocates rocked the vote...

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