[Sorry, I prematurely hit "Send"]
Thanks Ian, that's of great help. !
So far, looking at the SLD examples you posted, I crafted a categorized
style this way:
================================================
double[] thresholds = new double[] { 30, 100 };
Color[] colors = new Color[] { Color.GREEN, Color.RED };
StyleFactory sf =
CommonFactoryFinder.getStyleFactory(GeoTools.getDefaultHints());
FilterFactory2 ff =
CommonFactoryFinder.getFilterFactory2(GeoTools.getDefaultHints());
Graphic graphic = sf.getDefaultGraphic();
Mark mark = sf.getCircleMark();
List<Expression> categories = new ArrayList<>();
categories.add(ff.property("value"));
for (int i = 0; i < colors.length; ++i) {
categories.add(ff.literal(thresholds[i]));
categories.add(ff.literal(
String.format("#%02X%02X%02X", colors[i].getRed(),
colors[i].getGreen(), colors[i].getBlue());)));
}
Function ctgFun = new CategorizeFunction(categories,
ff.literal("#0000FF"));
mark.setFill(sf.createFill(ctgFun, ff.literal(1.0)));
graphic.graphicalSymbols().clear();
graphic.graphicalSymbols().add(mark);
PointSymbolizer ps = sf.createPointSymbolizer(graphic,
GEOM_PROPERTY);
================================================
On the other side, my feature has the "value" attribute set.
However I can only see the default black-border circles: color categories
are not applied seemingly.
Any hint?
Any wrong step in the above procedure?
On 3 May 2016 at 13:42, Piero Campalani <[email protected]> wrote:
> Thanks Ian, that's of great help. !
>
> So far, I crafted a categorized style this way:
>
> ================================================
>
> Graphic graphic = sf.getDefaultGraphic();
> Mark mark = sf.getCircleMark();
>
> List<Expression> categories = new ArrayList<>();
> categories.add(ff.property("value"));
>
> for (int i = 0; i < colors.length; ++i) {
> categories.add(ff.literal(thresholds[i]));
>
> categories.add(ff.literal(FormatUtils.colorToHashedHexs(colors[i])));
> }
>
> Function ctgFun = new CategorizeFunction(categories,
> ff.literal("#0000FF")); // FIXME remove fallback
> mark.setFill(sf.createFill(ctgFun, ff.literal(fillOpacity)));
> // mark.setStroke(sf.createStroke(
> // ff.literal(color), ff.literal(strokeOpacity)));
> graphic.graphicalSymbols().clear();
> graphic.graphicalSymbols().add(mark);
>
> PointSymbolizer ps = sf.createPointSymbolizer(graphic,
> GEOM_PROPERTY);
> ================================================
>
>
> On 2 May 2016 at 12:52, Ian Turton <[email protected]> wrote:
>
>> What you want can probably be achieved by using a categorize function -
>> see
>> http://docs.geoserver.org/latest/en/user/styling/sld-tipstricks/transformation-func.html
>> for more details of how it works.
>>
>> Ian
>>
>
>
>
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