NZ Topo - object class glacial_lake_poly

This page describe the glacial_lake_poly object class used to represent objects in the NZTopo topographic database.

Description

Glacial lake boundary; a lake fed by meltwater, or forming in glacier ice because of differential melting, or one confined by a morainal dam, or held in a bedrock basin produced by glacial erosion.

Representation specification

Representation specification showing glacial_lake_poly

Click to enlarge image

Class attributes

Attribute Value
Object class glacial_lake_poly
Entity class LAKE
Additional entity class Not applicable
Object inheritance simple_area
Entity source US Standard Entity
Map series Ant50
LSLIFF object class 516

Object attributes

Attribute LSLIFF code
Shapefile field
Data type
Attribute description Attribute values*
name 1001
name
string
The name of the glacial lake, 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.
"Terrace Lake"
{empty}
name_macronated 1140
macronated
boolean
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
Y
N
name_ascii 9000
name_ascii
string
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.
UFID 1000
t50_fid
integer
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.
"3254886"

* See explanation of attribute values for more information about how attribute values are represented.

Change log

Feature version Revised Description
7 2012-08-28 Updated map image and aerial view; added representation specification and example feature photographs
6 2012-08-16 Name attribute in UTF-8 format; added name_ascii attribute
5 2010-07-06 Object class changed
4 2010-03-01 Added name_macronated attribute
3 2008-04-10 Removed reference to seed and void objects
2 2001-11-23 Unspecified update
1 1999-03-01 intial status