I want to use a different color for each value in the chart I created here. To put it simply, if the value is greater than 10, I want it to appear yellow, if it is less than green, and red if it is less than 0. thanks
const { sciChartSurface, wasmContext } = await SciChartSurface.create("scichart-root", {
theme: new SciChartJSLightTheme(),
});
sciChartSurface.applyTheme(new SciChartJSLightTheme());
sciChartSurface.xAxes.add(new NumericAxis(wasmContext));
sciChartSurface.yAxes.add(new NumericAxis(wasmContext));
const yAxis = sciChartSurface.yAxes.get(0);
yAxis.visibleRange = new NumberRange(LAL, UAL);
const xAxis = sciChartSurface.xAxes.get(0);
xAxis.visibleRange = new NumberRange(0, endBarIndex);
const dataSeries = new OhlcDataSeries(wasmContext, {
xValues: xValues,
openValues: yValues,
highValues: compositeScanAverageArray,
lowValues: yValues,
closeValues: compositeScanAverageArray,
});
const renderableSeries = new FastCandlestickRenderableSeries(wasmContext, {
dataSeries,
stroke: "white",
strokeThickness: 1,
});
sciChartSurface.renderableSeries.add(renderableSeries);
sciChartSurface.annotations.add(
new SciChart.BoxAnnotation({
stroke: "yellow",
strokeThickness: 1,
fill: "rgba(255, 255, 0, 0.3)",
x1: 0,
x2: endBarIndex,
y1: UAL,
y2: UWL,
})
);
sciChartSurface.annotations.add(
new SciChart.BoxAnnotation({
stroke: "yellow",
strokeThickness: 1,
fill: "rgba(255, 255, 0, 0.3)",
x1: 0,
x2: endBarIndex,
y1: LAL,
y2: LWL,
})
);
sciChartSurface.annotations.add(
new SciChart.BoxAnnotation({
stroke: "green",
strokeThickness: 1,
fill: "rgba(0, 128, 0, 0.3)",
x1: 0,
x2: endBarIndex,
y1: LWL,
y2: UWL,
})
);
sciChartSurface.annotations.add(
new SciChart.LineAnnotation({ stroke: "#FF6600", strokeThickness: 3, x1: startBarIndex, x2: endBarIndex, y1: compositeScanAverage, y2: compositeScanAverage }),
);
sciChartSurface.chartModifiers.add(new MouseWheelZoomModifier());
sciChartSurface.chartModifiers.add(new ZoomPanModifier());
}
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This sounds like the PaletteProvider API can help you
SciChart.js features the ability to change color of series on a point-by-point basis, using the PaletteProvider feature.
The PaletteProvider API allows you to achieve per data-point colouring or styling. Here is a quick example below. The following pages have further worked examples for each series type.
The PaletteProvider API is a powerful extension in SciChart.js which allows you to colour line segments, scatter points, candles/columns or mountain chart segments based on a programatic rule.
Some common Use-cases for the PaletteProvider
Some common use-cases for the PaletteProvider API include:Changing colour of a line series when value exceeds a threshold.
Colouring candlesticks based on volume
Changing the Fill of a time-based Histogram based on day of the week
Highlighting important Scatter or Bubble points based on additional data.
- Andrew Burnett-Thompson answered 3 months ago
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