Title

Wimmera CMA - Canopy Height 

Time period

2010-01-052010-10-20 

Horizontal Accuracy

0.3m  

Vertical Accuracy

0.2m  

Code

MGA Zone 54 GDA94 

Title

ESRI Ascii 

Topic category

• Elevation

Use limitation

Departmental 

Classification

Limited Distribution  

Description

Canopy height is defined as the vertical measurement between the ground and top of vegetation and is determined on a 2m cell basis. Canopy Height has been derived by subtracting the average height of the ground returns in each cell from the highest vegetation return in that cell, and has been calculated within 300m either side of the ISC river centre lines. Vegetation heights have been limited to a maximum of 99m above ground. Data has been removed within 1m of buildings to avoid errors related to building features underneath or above the vegetation. The height measurements are taken directly from the LiDAR data points. 

Classification

Unclassified  

Attribute Quality

Positional Accuracy

Conceptual Consistency

Comments

The Canopy Height values are expressed in metres and are continuous, floating point values. 

Missing Data

Comments

The Canopy Height dataset has been created to an extent 300m either side of the river centreline. 

Excess Data

Platform Type

Aerial  

Assembly

Single  

Tile Size

1 km  

Raster Type

Canopy Height Model  

X Pixel Resolution (cm)

2cm  

Y Pixel Resolution (cm)

2cm  

Seamlessness

Not Entered  

Number of Bands

1 

Band List

1  

Resampling Kernel

Not Entered  

Rectification Type

Orthorectified  

Platform Name

Fixed Wing Aircraft