EN ISO 19156:2013

Foreword
Introduction
1 Scope
2 Conformance
3 Normative references
4 Terms and definitions
5 Abbreviated terms and notation
6 Dependencies
7 Fundamental characteristics of observations
8 Specialized observations
9 Fundamental characteristics of sampling features
10 Spatial sampling features
11 Specimens
Annex A (normative) - Abstract Test Suite
Annex B (informative) - Mapping O&M terminology to
        common usage
Annex C (normative) - Utility classes
Annex D (informative) - Best practices in use of the
        observation and sampling models
Bibliography

ISO 19156:2011 defines a conceptual schema for observations, and for features involved in sampling when making observations. These provide models for the exchange of information describing observation acts and their results, both within and between different scientific and technical communities.Observations commonly involve sampling of an ultimate feature-of-interest. ISO 19156:2011 defines a common set of sampling feature types classified primarily by topological dimension, as well as samples for ex-situ observations. The schema includes relationships between sampling features (sub-sampling, derived samples).ISO 19156:2011 concerns only externally visible interfaces and places no restriction on the underlying implementations other than what is needed to satisfy the interface specifications in the actual situation.