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QEII CQEII CovPolys <\/SPAN><\/P>

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QEII Covenant Polygon Data Definition<\/SPAN><\/P>

Introduction<\/SPAN><\/P>

The digital layer of QEII covenant boundaries has been compiled from various sources around the<\/SPAN><\/P>

country, including regional and district councils, DOC conservancies, surveyors and LandOnline.<\/SPAN><\/P>

Funding from TFBIS in 2005 enabled QEII to sub-contract the digital capture of covenant boundaries<\/SPAN><\/P>

from survey plans for the remaining parts of the country. Since 2005, new covenant boundaries are<\/SPAN><\/P>

supplied directly to QEII by the surveyors who produce the survey plans or are downloaded from<\/SPAN><\/P>

LandOnline. It should be noted that the digital boundaries of the covenants are a graphic<\/SPAN><\/P>

representation only and should not be taken as the definitive covenant boundary.<\/SPAN><\/P>

Status \u2013 Completeness and Quality<\/SPAN><\/P>

As at 13 February 2015, the data are 100% complete (3980 registered and formalised covenants with<\/SPAN><\/P>

polygons). The quality of the data has been assessed by comparing the registered area of each<\/SPAN><\/P>

covenant (in hectares) with the geometric area as calculated in the GIS. Currently 95.7% of the<\/SPAN><\/P>

polygons are within +/- 10% of the registered area (QualCode = 1). The remaining 4.3% have to be<\/SPAN><\/P>

verified and either require re-digitising or some further amendment. We are working our way through<\/SPAN><\/P>

processing these to improve the quality. 594 polygons have not yet been verified against a survey plan<\/SPAN><\/P>

or photodiagram. Please note that the quality code described above is no reflection of the positional<\/SPAN><\/P>

accuracy.<\/SPAN><\/P>

Updates<\/SPAN><\/P>

Each year, approximately 200 new covenants are approved by the QEII Board, but each may take, on<\/SPAN><\/P>

average, two years to complete the process to registration. At current rates of funding and processing,<\/SPAN><\/P>

QEII is able to register about 40-50 new covenants each quarter. In addition, there are a number of<\/SPAN><\/P>

changes to existing covenants as a result of sub-divisions, changes of ownership, variations and so<\/SPAN><\/P>

on.<\/SPAN><\/P>

An update of the digital covenant polygon layer will therefore be issued every three to four months to<\/SPAN><\/P>

reflect the changes to the national dataset.<\/SPAN><\/P>

Attributes<\/SPAN><\/P>

The covenant polygons have the following attributes from the covenants database:<\/SPAN><\/P>

Attribute Format Description<\/SPAN><\/P>

CovNumber Text 12 Unique file reference number for the covenant, e.g. 5-02-171. NB. Some<\/SPAN><\/P>

covenants are in the process of being re-numbered to simplify the numbering<\/SPAN><\/P>

system.<\/SPAN><\/P>

All covenants start with a 5; QEII property numbers start with a P, eg. P 21.<\/SPAN><\/P>

The second part of the covenant number defines the Land Registry District,<\/SPAN><\/P>

eg. 02 = Northland. Covenants are numbered sequentially within a Land<\/SPAN><\/P>

Registry District.<\/SPAN><\/P>

CreatedBy Text 35 6 main categories defining how the polygon was derived:<\/SPAN><\/P>

- Digital file from surveyor \u2013 Captured from survey plan (as dxf, dwg or<\/SPAN><\/P>

.shp)<\/SPAN><\/P>

- Digitised from plan \u2013 Unverified \u2013 Digitised from plan or exact method<\/SPAN><\/P>

unknown and not yet verified<\/SPAN><\/P>

- Digitised from plan \u2013 Verified \u2013 Digitised from scanned plan or<\/SPAN><\/P>

photodiagram and verified<\/SPAN><\/P>

- Captured from CRS parcels \u2013 Captured from LINZ Data Service or LINZ<\/SPAN><\/P>

LandOnline<\/SPAN><\/P>

- DP Plan Distance and Bearing \u2013 Polygon constructed from distance and<\/SPAN><\/P>

bearing information on deposited plan.<\/SPAN><\/P>

- Unconfirmed Boundaries \u2013 Approximate, unconfirmed location of<\/SPAN><\/P>

covenant boundaries.<\/SPAN><\/P>

QEII CovPolys web 20150213 Data Definition.doc Last updated: 13/02/2015<\/SPAN><\/P>

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Attribute Format Description<\/SPAN><\/P>

Comment Text 254 Notes on:<\/SPAN><\/P>

- sources and method used for the polygon capture<\/SPAN><\/P>

- further processing required for certain polygons.<\/SPAN><\/P>

PrevCovNum Text 20 Previous Covenant Number \u2013 used if covenant has been renumbered or<\/SPAN><\/P>

subdivided.<\/SPAN><\/P>

LastUpdate Date Date polygon last updated by QEII<\/SPAN><\/P>

QualCode Short Quality code currently used to categorise accuracy of polygons until<\/SPAN><\/P>

verification is complete:<\/SPAN><\/P>

0 \u2013 cannot calculate QualCode because there is no survey area<\/SPAN><\/P>

(AreaSurvHa).<\/SPAN><\/P>

1 \u2013 polygon geometric area between +/- 10 \u2013 50 % of registered survey<\/SPAN><\/P>

area (highest quality)<\/SPAN><\/P>

2 \u2013 polygon geometric area between +/- 10 \u2013 50 % of registered survey<\/SPAN><\/P>

3 \u2013 polygon geometric area between greater than +/- 50 % of registered<\/SPAN><\/P>

survey area (worst quality)<\/SPAN><\/P>

NumBlocks Short Number of discontinuous blocks that make up the covenant. Covenants with<\/SPAN><\/P>

more than one block are represented as multi-part polygons.<\/SPAN><\/P>

GeomArea Double Geometric area (in Ha) calculated by the GIS<\/SPAN><\/P>

QEIIRegion Text 254 Name of the QEII region containing the covenant. QEII has 27 regions, each<\/SPAN><\/P>

staffed by a representative.<\/SPAN><\/P>

CovStatus Text 10 Status of the covenant \u2013 only registered and formalised covenants shown<\/SPAN><\/P>

DateRegd Date Date on which the covenant was registered.<\/SPAN><\/P>

DateAppr Date Date on which the covenant was approved.<\/SPAN><\/P>

AreaSurvHa Double Surveyed area of covenant at time of registration (in Ha). This figure comes<\/SPAN><\/P>

from the QEII covenants database.<\/SPAN><\/P>

Mapref Text 11 Map reference of a point giving the rough location of the covenant, defined at<\/SPAN><\/P>

the proposal stage. May not lie within the actual covenant boundary.<\/SPAN><\/P>

Easting Double NZTM Easting<\/SPAN><\/P>

Northing Double NZTM Northing.<\/SPAN><\/P>

WholeTitle Text 5 Yes/No field indicating whether covenant applies to a whole property<\/SPAN><\/P>

(comprising one or more titles). If yes, then the covenant boundaries should<\/SPAN><\/P>

match the relevant parcel boundary for the title(s). [No survey plans are<\/SPAN><\/P>

prepared for whole-of-title covenants]<\/SPAN><\/P>

TA_Name Text 30 Territorial Authority<\/SPAN><\/P>

RegC_Name Text 30 Regional Council<\/SPAN><\/P>

Coordinate System<\/SPAN><\/P>

New Zealand Transverse Mercator 2000.<\/SPAN><\/P>

Further information<\/SPAN><\/P>

For further information about QEII covenants or the business of the organisation, please refer to the<\/SPAN><\/P>

website: www.openspace.org.nz<\/SPAN><\/P>

Further details about the covenants database and GIS information are available from Joanna Haigh<\/SPAN><\/P>

(Senior Advisor Geospatial Services). 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