Marker Size = Number of confirmed COVID-19 cases

Range: 28 > 3025

Marker Colour = Number of deaths attributed to COVID-19

Blue = 0

Red = 41

Learn more about SLD

Custom SLD code:

<?xml version="1.0" encoding="UTF-8"?>
<sld:StyledLayerDescriptor xmlns="http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml" version="1.0.0">
  <sld:NamedLayer>
    <sld:Name>Default Styler</sld:Name>
    <sld:UserStyle>
      <sld:Name>Default Styler</sld:Name>
      <sld:FeatureTypeStyle>
        <sld:Name>name</sld:Name>
        <sld:Rule>
          <sld:Title/>
          <sld:MinScaleDenominator>866687.0</sld:MinScaleDenominator>
          <sld:MaxScaleDenominator>4.43744032E8</sld:MaxScaleDenominator>
          <sld:PointSymbolizer>
            <sld:Graphic>
              <sld:Mark>
                <sld:WellKnownName>circle</sld:WellKnownName>
                <sld:Fill>
                  <sld:CssParameter name="fill">
                    <ogc:Function name="Interpolate">
                      <ogc:PropertyName>deaths</ogc:PropertyName>
                      <ogc:Literal>0</ogc:Literal>
                      <ogc:Literal>#00ff00</ogc:Literal>
                      <ogc:Literal>41</ogc:Literal>
                      <ogc:Literal>#ff0000</ogc:Literal>
                      <ogc:Literal>color</ogc:Literal>
                    </ogc:Function>
                  </sld:CssParameter>
                </sld:Fill>
              </sld:Mark>
              <sld:Size>
                <ogc:Function name="Interpolate">
                  <ogc:PropertyName>cases</ogc:PropertyName>
                  <ogc:Literal>28</ogc:Literal>
                  <ogc:Literal>15</ogc:Literal>
                  <ogc:Literal>3025</ogc:Literal>
                  <ogc:Literal>150</ogc:Literal>
                  <ogc:Literal>numeric</ogc:Literal>
                </ogc:Function>
              </sld:Size>
            </sld:Graphic>
          </sld:PointSymbolizer>
        </sld:Rule>
        <sld:VendorOption name="sortBy">elevation</sld:VendorOption>
      </sld:FeatureTypeStyle>
    </sld:UserStyle>
  </sld:NamedLayer>
</sld:StyledLayerDescriptor>

Data