When is a data processing event an Observation?

Originator: JeremyTandy

Creation date: 20 Apr 2011

Overview

We need to define a policy identifying when a data-processing event can be considered an observation EVENT (as defined by ISO/DIS19156 O&M)

Example scenarios include:
    • When is a data processing event an O&M Observation event?
    • Is the act of deriving a new coverage from a collection of source coverages an Observation event?

Proposals & discussion

Proposal

Originator: Jeremy Tandy

Date: 20 Apr 2011

Candidate discriminator: if one cannot traverse back to the source data from the derived data then the derivation event may be regarded as an O&M Observation; i.e. the derivation event must include some uni-directional transformation that creates something NEW.

Given this defnition, a executing simple aggregation or sub-setting process is NOT an Observation EVENT

Re-projection, whilst a transformation, is NOT an observation because it can be reversed by the application of the same algorithm

Discussion


Agreement

none.

-- JeremyTandy - 20 Apr 2011
Topic revision: r1 - 20 Apr 2011, JeremyTandy
 

This site is powered by FoswikiThe information you supply is used for OGC purposes only. We will never pass your contact details to any third party without your prior consent.
If you enter content here you are agreeing to the OGC privacy policy.

Copyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding OGC Public Wiki? Send feedback