netCDF output file contents - rosepearson/GeoFabrics GitHub Wiki
The geofabrics generated by the LidarDemGenerator
and BathymetryDemGenerator
processing classes are stored as netCDF files. This page describes their contents.
NetCDF file structure
NetCDF is a flexible file format for accessing and storing array-orientated scientific data. It is also defines a community standard (through CF compliance) for sharing scientific data.
Global attributes
The following standard attributes are included:
And the following custom attribute geofabrics_instruction - A JSON dump of the instruction file used to produce the geofabrics.
x
and y
Coordinates - Coordinates used to define the location and coordinate systems associated with the geofabric layers. The x
, y
define the spatial extents, and the spatial_ref
defines the coordinate system in a CF compliant manner.
z
or ground elevation layer
The ground elevation as estimated in each pixel.
source_class
or source classification layer
The source of the data used to produce an estimate in each pixel. Note is now 'coarse DEM' not 'reference DEM'
zo
or roughness length layer
The roughness length (a measure of friction experienced by water as it flows) estimate in each pixel.