This dataset is a polygon theme of vegetation types or structures of the Cocos (Keeling) Islands. It is derived from topography data (possibly 1:1000 scale) created by AUSLIG.

The attributes are probably meaningless. Re-coding according to actual vegetation types is recommended if this layer is to be used for analysis.

The vegetation appears to match the 1987 orthophotography, and would therefore be out of date in some areas (the 1992 planning data documentation reveals that areas have been cleared since the 1987 air photos).

Coverage is over West and Home Islands.

The vegetation theme was derived by AGSO from the topography data supplied by AUSLIG Canberra (via Landinfo).

There are a number of features in the original topography data that do not have valid AUSLIG codes. Comparison with the orthophotography indicates that all these codes represent vegetation.

GA has extracted these codes and created a polygon layer (in ArcInfo 8.1 Workstation) by including common lines as well as those coded as a particular type.

The resulting layer is coded according to the erroneous codes in the original data. Because the level of detail is different from the vegetation layers in the planning data, correlation was not conclusive. Re-coding according to actual vegetation types is recommended if this layer is to be used for analysis.

The positional accuracy of this dataset is the same as the topography dataset that it was extracted from (its nominal scale is probably 1:1000).

The vegetation appears to match the 1987 orthophotography, and would therefore be out of date in some areas (the 1992 planning data documentation reveals that areas have been cleared since the 1987 air photos)

Attributes are probably meaningless, as original codes were not according to the AUSLIG standards and no decoding sheet was available. Correlation with other vegetation coverages was not possible due to scale differences.

Recoding according to actual vegetation types is recommended if this layer is to be used for analysis.