Yes, that is something you can do with style factory. Explicitly for marks:
- http://docs.geotools.org/latest/javadocs/org/geotools/styling/StyleFactory.html#createMark-org.opengis.filter.expression.Expression-org.geotools.styling.Stroke-org.geotools.styling.Fill-org.opengis.filter.expression.Expression-org.opengis.filter.expression.Expression- And using an embedded CQL expression for external graphics: - http://docs.geotools.org/latest/javadocs/org/geotools/styling/StyleFactory.html#createExternalGraphic-java.net.URL-java.lang.String- See example at the end of the page here https://docs.geoserver.org/latest/en/user/styling/sld/extensions/pointsymbols.html#dynamic-symbolizers -- Jody Garnett On Thu, 11 Nov 2021 at 09:01, lum_h--- via GeoTools-GT2-Users < geotools-gt2-users@lists.sourceforge.net> wrote: > Hi folks, > > > > From the geotools user guide Styling features for display — GeoTools > 27-SNAPSHOT User Guide > <https://docs.geotools.org/latest/userguide/library/render/style.html> > example: > > > > *//* > > *// create the graphical mark used to represent a city* > > Stroke stroke = sf.stroke(ff.literal("#000000"), *null*, *null*, > *null*, *null*, *null*, *null*); > > Fill fill = sf.fill(*null*, ff.literal(Color.BLUE), ff.literal(1.0 > )); > > > > *// OnLineResource implemented by gt-metadata - so no factory!* > > OnLineResourceImpl svg = *new* OnLineResourceImpl(*new* URI( > "file:city.svg")); > > svg.freeze(); *// freeze to prevent modification at runtime* > > > > OnLineResourceImpl png = *new* OnLineResourceImpl(*new* URI( > "file:city.png")); > > png.freeze(); *// freeze to prevent modification at runtime* > > > > *//* > > *// List of symbols is considered in order with the rendering > engine choosing* > > *// the first one it can handle. Allowing for svg, png, mark > order* > > List<GraphicalSymbol> symbols = *new* ArrayList<>(); > > symbols.add(sf.externalGraphic(svg, "svg", *null*)); *// svg > preferred* > > symbols.add(sf.externalGraphic(png, "png", *null*)); *// png > preferred* > > symbols.add(sf.mark(ff.literal("circle"), fill, stroke)); *// > simple circle backup plan* > > > > Expression opacity = *null*; *// use default* > > Expression size = ff.literal(10); > > Expression rotation = *null*; *// use default* > > AnchorPoint anchor = *null*; *// use default* > > Displacement displacement = *null*; *// use default* > > > > *// define a point symbolizer of a small circle* > > Graphic circle = sf.graphic(symbols, opacity, size, rotation, > anchor, displacement); > > PointSymbolizer pointSymbolizer = > > sf.pointSymbolizer("point", ff.property("the_geom"), > *null*, *null*, circle); > > > > Would it be possible to specify the SVG graphic dynamically using > “Expression” ? > > I would like the SVG to be specified via ff.property() ? > > > > Appreciate your help. > > > _______________________________________________ > GeoTools-GT2-Users mailing list > GeoTools-GT2-Users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >
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