NZ Topo - object class building_poly

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

Description

A relatively permanent walled and roofed construction.

Topo50 description

Building_poly is used to capture a building where it is large enough to be captured at 1:50,000 as an area feature (generally those larger than 25m square or other shape of equivalent area) . The CBD area of large towns and cities is held in the data as a large building_poly/s. It is shown on the printed maps as a black fill with the road features above.

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 building_poly

Click to enlarge image

See also: building_pnt

Class attributes

AttributeValue
Object classbuilding_poly
Entity classBUILDING
Additional entity classBUILDING COMPLEX
Object inheritancesimple_area
Entity sourceProposed change to US Entity
Map series Topo50 Topo250
LSLIFF object class302

Object attributes

AttributeLSLIFF code
Shapefile field
Data type
Attribute descriptionAttribute values*
name1001
name
string
The name of the building, 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.
"Flock House"
{empty}
name_macronated1140
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/placenames/find-names/macrons/index.aspx for a list of places or feature names within New Zealand that are gazetted and include macrons
Y
N
building_use1014
bldg_use
string
For substation example see powerline_cl page. For sewage plant see pond_poly page. Note: Other legitimate building use attributes will be added periodically. See below
building_status1013
status
string
Values
derelictIn a state of disrepair, no longer safe to use.
derelict
historic
{empty}
name_ascii9000
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.
UFID1000
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.

building_use attributes values

ValueDescription
{empty}
abattoir
camp
cement works - NOTE this attribute used exclusively for plants producing cement from raw materials. In 2009 there were 2.
church
energy facilitya general description for a building which is usually part of a small compound associated with energy production. This value will replace "gas compound" "methanol plant" "natural gas plant" and "synthetic fuel plant"
factory
fertilizer works - NOTE this attribute used exclusively for those plants in areas outside of the urban/peri-urban zone producing fertilizer from raw materials. In 2009 there were 7 known such plants.
fire lookout
forest headquarters
gas compound
greenhouse
gun club
gun emplacement
hall
homestead
hospital
hut
lodge
marae
methanol plant
mill
natural gas plant
observatory
power generation
prison
salt works
school
shelter
shingle works
silo
stamping battery
substation
surf club
synthetic fuel plant
university
visitor centre
water treatment plant

Change log

Feature versionRevisedDescription
152014-03-06nwe building_use value
142012-08-28Updated map image and aerial view; added representation specification and example feature photographs
132012-08-28Added scale-specific definitions
122012-08-27Name attribute in UTF-8 format; added name_ascii attribute
112012-08-16Name attribute in UTF-8 format; added name_ascii attribute
102010-03-01Added name_macronated attribute and updated values for building_use
92008-04-10Removed reference to seed and void objects
82006-03-17new attribute value greenhouse replaces glasshouse and parliament for building use
72003-06-30new attribute values
62002-09-18new attribute value
52002-06-18new attribute value
42001-07-01new attribute value
32000-11-01updated data type, new attribute values
22000-03-31new attribute values
11999-03-01initial status