gfeConfig - Discrete Color Algorithm Configuration

GFE/ifpIMAGE Configuration File
Discrete Color Algorithm Configuration

The discrete color algorithm is very simple in the case of non-overlapping discrete configuration. It simply uses a color table in much the same way as SCALAR and VECTOR use color tables. The algorithm becomes more complicated when the discrete element contains overlapping information.

GFE Configuration Item	Applicable to GFE	Applicable to ifpIMAGE	Notes
Discrete Overlap Patterns	YES	YES
Discrete Complex Color	YES	YES
Discrete Complex Pattern	YES	YES

Discrete Color Algorithm

Number of Discrete Keys at a Grid Point	Fill Pattern	Color
1	No fill pattern	As specified by the Color Table that is assigned to the discrete weather element.
2	The 1st element (priority-order) is drawn as a solid. The 2nd element is drawn using the first entry in Discrete Overlap Patterns.	Each element is drawn as specified in the Color Table that is assigned to the discrete weather element. For example, if the discrete key is "A^B" and A is assigned red and B is assigned blue, then there will be a solid red area with a patterned blue.
3...n+1 (where n is the number of patterns identified in the Discrete Overlap Patterns)	The 1st element is drawn as a solid. The remaining elements are drawn with each of the entries in the Discrete Overlap Patterns.	Each element is drawn as specified in the Color Table that is assigned to the discrete weather element.
n+2... (where n is the number of patterns identified in the Discrete Overlap Patterns)	The pattern for all elements is as shown in the Discrete Complex Pattern entry.	The color for all elements is as shown in the Discrete Complex Color entry.

Discrete Overlap Pattern

The Discrete Overlap Pattern entry defines the set of patterns to use for overlapping discrete fields where an overlap occurs. The number of patterns indicate the number of overlaps that will be made visually before the Discrete Complex Pattern and Discrete Overlap Pattern is used.

DiscreteOverlapPatterns = ['TRANS_25PC_45DEG', 'TRANS_25PC_135DEG', 'CROSS']

The available fill patterns are:

WHOLE

WIDE

SCATTERED

WIDE_SCATTERED

ISOLATED

TRANS_25PC_45DEG

TRANS_25PC_135DEG

SELECTED_AREA

DUALCURVE

CURVE

VERTICAL

CROSS

HORIZONTAL

You can view examples of these fill patterns here.

Discrete Complex Color

The Discrete Complex Color is used when there are many overlapping discrete values at a grid point and the list of Discrete Overlap Patterns has been exhausted.

DiscreteComplexColor = 'red'

Discrete Complex Pattern

The Discrete Complex Pattern is used when there are many overlapping discrete values at a grid point and the list of Discrete Overlap Patterns has been exhausted.

DiscreteComplexPattern = 'DUALCURVE'