FLIERS
File structure.
Raster files are stored, in serialised format, in the following multi-layer
structure, based on the Java objects defined in the toolkit.
RASTER HEADER
Holds information as follows;
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Title of raster data set
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Notes on its origin, etc.
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North, south, west, east, bounding coordinates.
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Numbers of rows and columns
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Summary statistics for fuzzy plots (if available)
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A data type (Float, byte, Boolean) for each layer*
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A number indicating how many layers there are*
* used when reading a file, to inform the reader what type of data to expect,
and how many layer objects there are.
Several RASTER LAYERS
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Each contains the following information;
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Name of this layer
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The nature of the data it contains (e.g. Fuzzy memberships, verification
data, Spectral values, mask layer)
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Notes on any processing carried out on this data layer, and its origin
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A colour associated with this data layer, and used to represent this class
in visualisations
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Information on the possible minimum and maximum values for this
layer - e.g, 0 and 1. This is used for colour scaling in displays, and
also for any automatic scaling of 8-bit values..
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Information on this layer's units of measurement.
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And the data - an array of pixel values, stored as floats or bytes.
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