Readme.txt
==========


ZIP PACKAGE
------------

This zip package contains:

- An ArcGIS File Geodatabase Feature Class of the Key Datasets that make up NVIS Version 4.1 - Australia wide - EXTANT (Dataset Title: "National Vegetation Information System (NVIS) Version 4.1 - Australia - Key Layer for the Sources of Present (Extant) Vegetation Data")
- The Attribute Table includes the following attributes: STATE, DATA_SET_NUMBER etc. See metadata for further details.
- Relevant layer files for this Feature Class (x3)


LOOK UP TABLE (LUT)
-------------------
- The look up table 'NVIS4_1_LUT_KEY_DSET' is available for separate download, and when joined to this dataset provides information such as Map Publication Scale, Atrribute Origin and Spatial Origin of the Key Datasets. Refer to the LUT metadata for further instruction on joining the LUT.
- LUT Dataset Title: "National Vegetation Information System (NVIS) Version 4.1 - Australia - Lookup table for Dataset Key Layers"
- You need to join this LUT to the spatial data, for the layer files (below) to work.


KEY LAYER SYMBOLOGY
-------------------

This File Geodatabase Feature Class has three associated layer files (namely for the attributes: Map_Publication_Scale, Attribute_Origin and Spatial_Origin). These layer files are:

- NVIS4_1_ext_key_attribute_origin.lyr
- NVIS4_1_ext_key_scale.lyr
- NVIS4_1_ext_key_spatial_origin.lyr

To apply the symbology, the relevant layer file will need to be imported via ArcGIS Symbology and relevant option (Map_Publication_Scale, Attribute_Origin or Spatial_Origin) chosen from the list of attributes in the Value Field.

The relevant symbology should then be applied with the following transparency:

- Spatial Origin
  30% transparency to Pre-1750 and extant themes

- Attribute Origin
  30% transparency to Pre-1750 and extant themes

- Source Scale
  0% transparency to Pre-1750 and extant themes



ERIN Vegetation Team
DSEWPaC
24 July 2012