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thank you for answer !

Additional questions
image is attached

q1. last data only marker
q2. vertical dotted line (with rolloverModifier)

This version was downloaded on October 19, 2021. It seems to be the latest version
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Hi there,

q1. There are several ways – you can use Annotation API and place annotation at last point ( e.g. CustomAnnotation ). The other ways XyScatterRenderableSeries with single data point ( you can update that data point using updateXXX() method or you can set FifoCapacity = 1 and use appendXXX()
q2. I have modifier our custom rollover example from demo and change next lines:

        UpdateSuspender.using(surface, new Runnable() {
        public void run() {
            Collections.addAll(surface.getXAxes(), xAxis);
            Collections.addAll(surface.getYAxes(), yAxis);
            Collections.addAll(surface.getRenderableSeries(), lineRs1, lineRs2);

            final RolloverModifier rolloverModifier = new RolloverModifier();
            Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroup().withModifier(rolloverModifier).build());

            rolloverModifier.getVerticalLinePaint().setPathEffect(new DashPathEffect(new float[] {20, 20}, 0));

            sciChartBuilder.newAnimator(lineRs1).withSweepTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
            sciChartBuilder.newAnimator(lineRs2).withSweepTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();

Results are on attached screenshot. Hope this will help you!

Best regards,

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