NZ Topo - object class lagoon_poly
This page describe the lagoon_poly object class used to represent objects in the NZTopo topographic database.
A sheet of salt water separated from the open sea by sand, shingle banks or a road embankment. The sheet of water between an offshore reef, esp. of coral, and mainland. The sheet of water within a ring or horseshoe shaped atoll.
Only those significant either by their size or location are held in the data and shown on the printed maps. Where a sheet of salt water is separated from the open sea by a shingle bank or road embankment, and where a culvert permitting the flow of water between the two (either visible on imagery or whose location is known) exists, then the separated area is captured as coastline, not lagoon_poly.
|Additional entity class||Not applicable|
|Entity source||US Standard Entity|
|LSLIFF object class||315|
|Attribute description||Attribute values*|
|The name of the lagoon, where known. Text data from July 2012 will be in UTF-8 format. If your system is not UTF-8 compliant, you will need to use the name_ascii attribute, which has had any macronated vowels removed. UTF-8 stands for Unicode Transformation Format-8. It is an octet (8-bit) lossless encoding of Unicode characters. UTF-8 encodes each Unicode character as a variable number of 1 to 4 octets, where the number of octets depends on the integer value assigned to the Unicode character. It is an efficient encoding of Unicode documents that use mostly US-ASCII characters because it represents each character in the range U+0000 through U+007F as a single octet. UTF-8 is the default encoding for XML.|
|Indicates whether the entry in the name_ascii field contains a macronated vowel. Where the value is "Y" go to http://www.linz.govt.nz/regulatory/place-names/find-place-name/find-m%C4%81ori-place-names-dual-names-and-alternative-names for a list of places or feature names within New Zealand that are gazetted and include macrons|
|The elevation of the water body above mean sea level|
|Text data from July 2012 will be in UTF-8 format. If your system is not UTF-8 compliant, you will need to use this attribute, which has had any macronated vowels removed.|
|A unique identifier for use on Topo50 data in the LINZ Data Service. This is not a universal ID. The intention is to manage these ID’s as persistent, however this is not guaranteed and there will be instances where what appears to be a minor change to a feature may result in a new ID being assigned.|
* See explanation of attribute values for more information about how attribute values are represented.
|8||2013-06-07||Extra information provided in the Topo50 Description field|
|7||2012-08-28||Updated map image and aerial view; added representation specification and example feature photographs|
|6||2012-08-28||Added scale-specific definitions|
|5||2012-08-16||Name attribute in UTF-8 format; added name_ascii attribute|
|4||2010-03-01||Added name_macronated attribute|
|3||2008-04-10||Removed reference to seed and void objects|