NZ Topo - object class lake_poly

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

Description

Any standing body of fresh inland water.

Topo250 description

Only those significant by their size or location are held in the Topo250 data and shown on the Topo250 printed maps; these are a generalised subset of those shown on the Topo50 series

Representation specification

Representation specification showing lake_poly

Click to enlarge image

Class attributes

Attribute Value
Object class lake_poly
Entity class LAKE
Additional entity class Not applicable
Object inheritance simple_area
Entity source US Standard Entity
Map series Topo250 Ant50 Topo50 Topo500
LSLIFF object class 316

Object attributes

Attribute LSLIFF code
Shapefile field
Data type
Attribute description Attribute values*
name 1001
name
string
Name of the 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.
"Lake Pounui"
{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
elevation 1021
elevation
real
The elevation of the water body above mean sea level.
{empty}
lake_group_name 1044
grp_name
string
The name of the group of lakes that this individual lake belongs, 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.
"XYZ Lakes"
{empty}
group_name_macronated 1141
grp_macron
boolean
Indicates whether the entry in the group_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
lake_use 1045
lake_use
string
hydro-electric
evaporation
reservoir
{empty}
lake_temperature 1046
temperatur
string
hot
{empty}
lake_perenniality 1047
perennial
string
Values
dry The lake does not contain water most of the time
seasonal The lake contains water seasonally through the year
{empty} The lake contains water throughout the year
dry
seasonal
{empty}
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.
lake_group_name_ascii 9002
grp_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 field, 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
10 2016-05-12 Corrected SHAPE attribute name for group_name_macronated
9 2012-08-28 Updated map image and aerial view; added representation specification and example feature photographs
8 2012-08-28 Added scale-specific definitions
7 2012-08-16 Name attribute in UTF-8 format; added name_ascii attribute
6 2010-07-06 Added group_name_macronated attribute
5 2010-03-01 Added name_macronated attribute
4 2008-04-10 Removed reference to seed and void objects
3 2001-11-23 Unspecified update
2 2001-07-01 new attribute
1 1999-03-01 intial status