Example 4 steps, run in order in one session. Every step was executed against the engine and the output below is what it produced.
data = {0.3, 0.3, 1.2, 0.8, 3.1, 1, 4, 0.1};No output - this step sets something up for the next one.
newdata = MapIndexed[If[# > Mean[data], Style[
Legended[#, Row[{"bar", First[#2]}]], ColorData[63, First[#2]]], #]&, data];No output - this step sets something up for the next one.
styles = Sequence@@{ImageSize -> 400, ChartStyle -> Gray, GridLinesStyle -> Directive[AbsoluteThickness[3], LightGray]};No output - this step sets something up for the next one.
BarChart[newdata, ChartElementFunction -> "FadingRectangle", GridLines -> {None, {Mean[data]}}, Evaluate@styles, ChartLegends -> SwatchLegend[None, LegendMarkerSize -> 20, LegendMarkers -> "FadingRectangle", LabelStyle -> {Gray, Bold, 18}, LegendLabel -> "above mean"]]-Graphics-All recipes · Function reference · Use this from an MCP client