NZ Topo - object class waterfall_poly
This page describe the waterfall_poly object class used to represent objects in the NZTopo topographic database.
a sudden descent of water over a step or ledge in the bed of a river.
Only those significant either by their size or location are held in the data and shown on the printed maps. Of these, waterfall_poly is used when the area is large enough to be captured at 1:50,000 as an area feature. Smaller features are captured as a point, centreline or edge, depending on their size
See also: river_poly
|Additional entity class||Not applicable|
|Entity source||US Standard Entity|
|LSLIFF object class||352|
|Attribute description||Attribute values*|
|The name of the waterfall, 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 height of the waterfall||
|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||2012-08-28||Updated map image and aerial view; added representation specification and example feature photographs|
|7||2012-08-28||Added scale-specific definitions|
|6||2012-08-16||Name attribute in UTF-8 format; added name_ascii attribute|
|5||2010-03-01||object class changed and added name_macronated attribute|
|4||2008-04-10||Removed reference to seed and void objects|
|2||1999-10-01||updated data type|