I have shapefiles that look like this like this:
R G B
STATE1 STATE2 STATE3
AREA1 z n a
AREA2 y m b
AREA3 x p c
The values of each column represents counts.
I assign a color to each column ( say R, G, B)
Then It is easy to create a style that says, show me all the areas which for
which the value of STATE2 < 0
by using the filter rule
Rule rule = sb.createRule(symb);
PropertyIsGreaterThan gt = ff2.greater(ff2.property(“STATE2"),
ff2.literal(0));
rule.setFilter(gt);
and where symb is a polygon symbolizer (for example) with fill color G
But I want to be more generic than this. I want to say: show me all the areas
for which the the state is < STATE3
The rule in that case I think would be:
Or or = ff2.or(ff2.greater(ff2.property(“STATE2"), ff2.literal(0)),
ff2.greater(ff2.property(“STATE1”), ff2.literal(0)); (I work backwards to find
the highest non zero state).
But now I get confused with assigning the symbology. I want the fill color of
the area to be that of the column (attribute) with the highest non failing
filter condition.
How do I achieve this? Do I also associate a greater than filter with the
symbology bit?
Thanx in advance
Gaby
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