This model corresponds with the UML published in ISO 19156:2011. It is essentially the same as the model for ISO DIS 19156 except for the following:<br /></p><p><br /></p><p>(i) packaging has been adjusted to better align with requirements classes<br /></p><p>(ii) OM_Observation::observedProperty links to GF_PropertyType (in place of GFI_PropertyType, which has been deleted)<br /></p><p>(iii) minor adjustments to constraints of OM_Observation. <br /></p><p><br /></p><p>ISO 19156 was published as IS in December 2011. <br /></p>