Subscript in Axis description

Question

I wanted to know if it is possible to use subscript in axis description. I have the following code

    XYItemRenderer lineYY = new StandardXYItemRenderer();
    lineYY.setSeriesPaint(0, Color.BLUE);
    lineYY.setSeriesVisibleInLegend(0,false);
    final NumberAxis yaxY = new NumberAxis("ax [m/s²]");
    yaxY.setRange(-11, 11);
    yaxY.setAutoRangeIncludesZero(false);
    XYPlot plotYY = new XYPlot(datasetY,null,yaxY, lineYY);
    plotYY.setRangeAxisLocation(AxisLocation.TOP_OR_LEFT);

Is there a way to subscript the x in the String "ax [m/s²]"? An subscript would be e.g. X₉

where you got that `²` from? ...coudn't you do it with x – xerx593 Apr 21 '15 at 23:44 — xerx593, Apr 21 '15 at 23:44
unfortunately it isnt possible. – Benaissa Tahiti Apr 22 '15 at 10:24 — Benaissa Tahiti, Apr 22 '15 at 10:24

trashgod · Accepted Answer · 2015-04-23T14:56:46.573

Using the approach shown here, you can specify an AttributedString for the desired axis label. Given a NumberAxis named domain, the example below uses TextAttribute values to alter the SIZE and WEIGHT of some characters, subscripts the second character and superscripts the exponent.

String s = "ax [m/s2]";
AttributedString as = new AttributedString(s);
as.addAttribute(TextAttribute.SIZE, 24, 0, 2);
as.addAttribute(TextAttribute.SIZE, 16, 3, 9);
as.addAttribute(TextAttribute.WEIGHT, TextAttribute.WEIGHT_BOLD, 0, 2);
as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUB, 1, 2);
as.addAttribute(TextAttribute.SUPERSCRIPT, TextAttribute.SUPERSCRIPT_SUPER, 7, 8);
domain.setAttributedLabel(as);

Excellent; I've updated the example to illustrate some of the variety possible with [`TextAttribute`](https://docs.oracle.com/javase/8/docs/api/java/awt/font/TextAttribute.html). — trashgod, Apr 23 '15 at 14:58

score 1 · Answer 2 · answered Apr 21 '15 at 23:44

You can try to use unicode values for the subscript/superscript - these should be respected by the Graphics2D rendering of the axis label (via Graphics2D.drawString method). For instance 'X\u2089' would be rendered similar to X₉. This is of course dependent on the Unicode subscript value existing as well as java supporting it.

score 1 · Answer 3 · answered Apr 21 '15 at 23:45

1

I am not sure about jFreeChart, but a pure java string could bear that, please try:

final NumberAxis yaxY = new NumberAxis("a\u2093 [m/s²]");

see: http://www.fileformat.info/info/unicode/char/2093/index.htm

answered Apr 21 '15 at 23:45

xerx593

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thanks for your answer. I have tried this already but all i got is an empty box. – Benaissa Tahiti Apr 22 '15 at 09:05

Subscript in Axis description

3 Answers3

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