GIGS Overview
A slide pack that can be used to present both
internally and externally the GIGS process and
business benefits
The International Association of Oil & Gas Producers
Geomatics Committee
Report # 430
What is GIGS?
GIGS - Geospatial Integrity of Geoscience Software
• History
• Initiated in 2007 as a Joint Industry Project (JIP),
sponsored by OGP in response to significant
concern and documented evidence of geospatial
integrity failures in Geoscience software
• Purpose
• to provide geoscience software developers with
recommended guidance concerning good industry
practice regarding geospatial integrity
GIGS is a process, for which OGP is supplying material
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Why is GIGS necessary?
The need for guidance concerning Geospatial
Integrity with geoscience software comes from
experience
Such as:
•
Lack of uptake of international data exchange
standards
•
Use of conflicting and inappropriate terminology
•
Use of incomplete or incorrect CRS parameters
•
Poor documentation
•
Ambiguity caused by lack of adequate Meta-data
•
Lack of audit-trail
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What is Geospatial Integrity?
Geospatial integrity is defined as the adherence of geospatial
data to the following criteria:
• Completeness
• Correctness
• Consistency
• Verifiabilty
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What is the objective of GIGS?
A process and guidance note intended for wide use
within the E&P industry to improve geospatial
integrity.
• It is aimed at vendors and users of any computer
package used in geoscience activities, including
• applications,
• processing packages
• underlying databases
• user interfaces
• It also includes software components or layers, such as:
• geodetic computation engines
• extensions
• middleware
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What is the GIGS material?
The GIGS material is delivered in three parts:
•
•
•
’Part 1 – Guidelines’ (OGP publication order code 430-1),
‘Part 2 – Software Review’(OGP publication order code 430-2),
and
‘Part 3 – User guide for the GIGS Test Dataset’ (OGP
publication order code 430-3)
It is supplemented by a number of companion electronic files:
•
•
•
Software review checklist;
GIGS Test Dataset.
Sample MS PowerPoint slides (this slide deck!)
The above digital documents and files are available from the OGP
Geomatics Committee website
http://info.ogp.org.uk/geomatics/
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GIGS guidance
The GIGS guidelines contain:
• Technical background to geospatial integrity
•
•
•
•
Definition of a geospatial dataset
Key geodesy concepts
Coordinate operations - what are they?
The EPSG Geodetic Parameter Dataset - why is it important?
• GIGS Software Review
• Glossary of Terms
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What is a GIGS software review?
A GIGS software review is a structured approach to evaluating
the geospatial integrity aspects of geoscience software and
consists of:
• A qualitative evaluation of the software’s geospatial capability
by means of a series of checklists;
• A quantitative evaluation of the software’s capabilities by
means of test data.
Both software vendors/developers and clients/users may
execute a GIGS review and benefit from its results.
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The software review process
A series of test procedures have been defined:
1. Coordinates and their Geodetic Reference (series 0000)
2. Documentation and Release Notes (series 1000)
3. Pre-defined Geodetic Parameter Library (series 2000)
4. User Defined Geodetic Parameter Library (series 3000)
5. The User Interface (series 4000)
6. Data Operations (series 5000)
7. Audit Trail (series 6000)
8. Deprecation (series 7000) - related to use of EPSG Dataset
9. Error Trapping (series 8000)
The individual tests are numbered for the purpose of reporting
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Classification of software
evaluation results
1. ‘Elementary’
-
intended for software without capability of performing coordinate operations, this
level indicates that the software satisfies minimum requirements for this category of
software
2. ‘Bronze’
-
intended for software with limited capability to perform coordinate operations, this
level indicates that the software satisfies minimum requirements to achieve a basic
level of geospatial integrity.
3. ‘Silver’
-
intended for software with full capability to perform coordinate operations, this level
indicates the software establishes and maintains geospatial integrity to a fully
satisfactory degree, based on industry best practices. The software is suitable for
global deployment in the E&P industry
4. ‘Gold’
-
intended for software with extensive capability to perform coordinate operations,
this level indicates software performance that exceeds the geospatial integrity
capabilities of the ‘silver’ level by incorporating additional software features that
expand the range of applicability and/or reduce the probability of geospatial integrity
violations.
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The software review workflow
Five key steps in the review process can be identified as:
1.
Define scope
Full or partial review; include/exclude integration aspects
2.
Prepare workplan
Quantify time requirements
3.
Identify and obtain expertise and resources
People, equipment, software and data
4.
Execute software review
5.
Prepare report(s)
Summary Report or Full Report, Conclusions & Recommendations
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For Clients / Users
The GIGS software review process:
• May be conducted on:
• Vendor software
• Company proprietary software
• May assist Geoscientists in establishing whether the
software meets specific business and technical
requirements
• Can be a key tool in the establishment and
maintenance of geospatial data integrity within the
business by:
• Optimising workflows
• Identifying both the strong and the weak points of geospatial
data handling of relevant software
• Ensuring the appropriate tool is used to suit the purpose
• Identifying provision of additional guidance for the geosocience
software user community
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For software Vendors / Developers
The GIGS software review process:
•
Provides a means of self-certification or self-validation of the
geospatial capabilities of the software.
•
Enables more effective marketing of the product by
communicating the results of the review to (prospective) clients
•
Helps the vendor to identify development needs and prioritise
improvements in the software.
•
The structured software review provides an opportunity for
education in this geodetic niche discipline and offers structure
for communications with customers.
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The GIGS test dataset
was designed:
• for use in the evaluation of the geospatial integrity of
geoscience software examined within the GIGS project
• to remain as a test harness for future reviews of
geoscience software after publication of the GIGS
Guidelines.
consists of:
• a series of files provided in a variety of formats
including industry data exchange formats and Microsoft
Excel v2003 (.xls).
• Each file is designed for a specific GIGS test.
• Where practical, data from one test is reused for other test
procedures
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FAQs
I am a Vendor / Developer
•
My application gets a G/S/B rating. So what?
•
Can I advertise my rating?
•
What happens if I am nearly G/S/B?
I am a Client / User
•
My application gets a G/S/B rating. What are the risks to my
work/business?
•
What should I do if the software does not reach S (silver)?
•
Can I add more tests?
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Backup slides
GIGS software review checklist
The tests are numbered (1, 2, ...) and, where relevant, sub-numbered
[ i), ii), ii), ...]; the first two columns of the spreadsheets are reserved
for this numbering. The test criterion is written in black font against a
pale green background. Italic text in dark grey has been added to
some test criteria to provide clarification of the test.
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Consolidation of evaluation results
GIGS grading
• The supplied spreadsheet contains formulas
that will automatically summarise the entries
into a consolidated result per Test Series.
• This is helpful in reporting the results of any
structured software reviews conducted with
the GIGS methodology.
• The consolidated score for any given Test
Series therefore shows the minimum level at
which the software is rated.
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GIGS
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