How to represent an object at 25 differents dates

Question

So basically, I have a map at day D. On this day X objects are represented with a color and full opacity.

What I'd like to do is to be able to represent on this map the Y objects present on the map at D-1, D-2, ..., D-25, on which I ll apply a gradually decreasing opacity.

Currently, I bound an SLD file to my layer with 25 rules. A rule define the opacity and the color of the object (1 rule for 1 day, so a rule for D-1, a rule for D-2 etc).

But this is not working, as geoserver is giving me back a GC overhead limit exceeded error.

Is there any other way to do it ? I may be unclear, so feel free to ask for more details, I ll edit my post.

EDIT : heres a peek at my SLD.

This is the rule I repeat 25 times in my SLD file. What change between each rule are the variables dateXmin and dateXmax who become dateXminJ1 and dateXmaxJ1 and so on 'till dateXminJ25 and dateXmaxJ25.

For the record I have a SLD file that repeat this rule 3 times, and Geoserver is giving me back an image almost instantly.

<FeatureTypeStyle>
                <Rule>
                    <Name>style_update_img</Name>
                    <ogc:Filter>
                        <ogc:And>
                            <ogc:Or>
                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name1</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name2</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name3</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name4</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name5</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name6</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name7</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name8</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name9</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>

                                <ogc:PropertyIsEqualTo>
                                    <ogc:PropertyName>table_name</ogc:PropertyName>
                                    <ogc:Function name="env"><ogc:Literal>name10</ogc:Literal><ogc:Literal>default</ogc:Literal></ogc:Function>
                                </ogc:PropertyIsEqualTo>
                            </ogc:Or>

                            <ogc:And>
                                <ogc:PropertyIsGreaterThanOrEqualTo>
                                    <ogc:PropertyName>daterec</ogc:PropertyName>
                                    <ogc:Function name="strConcat">
                                        <ogc:Function name="env"><ogc:Literal>dateXmin</ogc:Literal><ogc:Literal>2017-01-01</ogc:Literal></ogc:Function><ogc:Literal>T00:00:00.0Z</ogc:Literal>
                                    </ogc:Function>
                                </ogc:PropertyIsGreaterThanOrEqualTo>
                                <ogc:PropertyIsLessThan>
                                    <ogc:PropertyName>daterec</ogc:PropertyName>
                                    <ogc:Function name="strConcat">
                                        <ogc:Function name="env"><ogc:Literal>dateXmax</ogc:Literal><ogc:Literal>2017-01-01</ogc:Literal></ogc:Function><ogc:Literal>T00:00:00.0Z</ogc:Literal>
                                    </ogc:Function>
                                </ogc:PropertyIsLessThan>
                            </ogc:And>
                        </ogc:And>
                    </ogc:Filter>

                    <PolygonSymbolizer>
                        <Geometry>
                            <ogc:Function name="buffer">
                                <ogc:PropertyName>geom</ogc:PropertyName>
                                <ogc:Function name="env"><ogc:Literal>buffer</ogc:Literal><ogc:Literal>200</ogc:Literal></ogc:Function>
                            </ogc:Function>
                        </Geometry>

                        <Fill>
                            <CssParameter name="fill">
                                <ogc:Function name="strConcat">
                                    <ogc:Literal>#</ogc:Literal><ogc:Function name="env"><ogc:Literal>color</ogc:Literal><ogc:Literal>B9121B</ogc:Literal></ogc:Function>                                     
                                </ogc:Function>
                            </CssParameter>
                            <CssParameter name="fill-opacity">
                                <ogc:Literal>0.92</ogc:Literal>
                            </CssParameter>
                        </Fill>            
                    </PolygonSymbolizer>

                    <LineSymbolizer>
                        <Stroke>
                            <CssParameter name="stroke">
                                <ogc:Literal>#</ogc:Literal><ogc:Function name="env"><ogc:Literal>color</ogc:Literal><ogc:Literal>B9121B</ogc:Literal></ogc:Function>
                            </CssParameter>
                            <CssParameter name="stroke-opacity">
                                <ogc:Literal>0.87</ogc:Literal>
                            </CssParameter>
                        </Stroke>
                    </LineSymbolizer>
                </Rule>
            </FeatureTypeStyle>

Answer 1

You can handle time natively in GeoServer.

Read this article in the manual about doing it.

I haven't got a vector layer immediately available to demonstrate it, but you can set it up on the 'Dimensions' tab for a layer.

Once set, it's simply another parameter in your WMS request. You may have luck using one of the Leaflet plugins that handles time.