Add 2nd Y Axis Caption, Mark line + Add line Caption

Question

I got the following Problem,

I would like to :

• add a second Axis Caption to my Android Plot on the right side
• same Labels like right.(maybe)
• mark a line with a color and some text
• the violet line should always be in front the yellow one

Is there any way to do this?

Because a picture says more than thousands of words.

Answer 1

There's not a built in second axis caption, but since they're just instances of TextLabelWidget its pretty easy to add your own. Here's an example that adds a label to the SimpleXYPlotActivity example

    TextLabelWidget textLabelWidget = new TextLabelWidget(
            plot.getLayoutManager(),
            "some text",
            null,  // TextLabelWidget instances "pack" to wrap the actual text size
            TextOrientation.VERTICAL_ASCENDING);

    textLabelWidget.getLabelPaint().setColor(Color.RED);
    textLabelWidget.getLabelPaint().setTextSize(PixelUtils.dpToPix(24));

    plot.getLayoutManager().add(textLabelWidget);
    textLabelWidget.position(
            // add a right margin of 4dp:
            PixelUtils.dpToPix(4), HorizontalPositioning.ABSOLUTE_FROM_RIGHT,

            // center the text with the plot space vertically:
            0, VerticalPositioning.ABSOLUTE_FROM_CENTER,

            // use the middle of the right edge of the text widget as the anchor:
            Anchor.RIGHT_MIDDLE);

Which produces: