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Saturday, 16 November 2013

Implementing GIS to tackle local government issue - Part 4

Part 3: http://daneshatlas.blogspot.com.au/2013/11/implementing-gis-to-tackle-local_16.html

Master Input Data List

The GIS datasets required for the strategy are address, administrative boundaries, planning zones, property and transportation network. The non-spatial data required are population, income and employment status data and table of community service facilities (e.g. clinics). The address dataset would be utilized to geocode address of community service facilities and population characteristics data. Administrative boundaries dataset would be used in defining the council area and linking population data to census collection districts (CCD). 

Planning dataset shows planning polygons as this would be important in determination of future housing areas. Property dataset shows the location of parcels and its attributes and would be used in determination of number of residential lots could be impacted in this strategy. The tables of population characteristics and facilities would be utilized to assess the level of accessibility to facilities.

I shall examine address dataset in depth. The reason I chose this dataset is because it underpins the success of strategy and hub of connecting of non-spatial data and GIS datasets. Tables containing facility data and population characteristics are geocoded into the address dataset. This geocoded facilities/population data would work together with other datasets in the various geoprocessing methods.

Data identification Items:


     1) Dataset Name: VicMap Address
        (a) Identification No: ANZVI0803002578
        (b) Source/Custodian: Department of Sustainability & Environment (DSE)
        (c) Metadata: Spatial Extent- 34.0S-39.2S, 141E-150.2E. Spatial Reference- GDA94. Positional    accuracy- 90% of features are within 1mm at plot scale, of true position (5-25m). Attribute accuracy-1%-5% allowable error. Logical Consistency-1%-5% allowable error. Currency- 2012(time of writing)

Data Volume:

        (a) Volume:124MB
        (b) Format available: ESRI, MapInfo, DXF,DWG

Data Characteristics

Datasets available are in the ESRI shapefiles. Below here are the fields of address dataset will be used. Minimum spatial extent for the project is 144.963 E to 145.045 E and 37.777 S to 37.835 S.

Fields
Data Type
Name
Length
Allow Null Values
FID
Object ID
FID
-
No
Shape
Geometry
Shape
-
-
LGA_CODE
String
LGA_CODE
3
Yes
GEO_ADD
String
GEO_ADD
45
Yes
EZI_ADD
String
EZI_ADD
80
Yes

Source Data Availability

City Council is able to access the dataset required from DSE and it is fully in digital format (e.g. shapefiles).

Restrictions

No restrictions/royalties placed on the usage of datasets as this for council use (non-profit).

Part 5: http://daneshatlas.blogspot.com/2013/11/implementing-gis-to-tackle-local_24.html

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