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fix: add documentation for using chartoptions to set language translations #4691

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fix: add documentation for using chartoptions to set language translations #4691

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fix: add documentation for using chartoptions to set language transla…
sujoykd Oct 24, 2025
c01cd7e
fix: update language according to suggestion
sujoykd Oct 28, 2025
7b91e7a
fix: update language according to suggestion
sujoykd Oct 29, 2025
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34 changes: 34 additions & 0 deletions articles/components/charts/configuration.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -423,5 +423,39 @@ Some contexts that display labels allow defining simple formatting for the
labels. For example, data point tooltips allow defining prefix, suffix, and
floating-point precision for the values.

[[charts.configuration.lang-option]]
== Chart Language

The [classname]`Lang` class provides an API for chart localization.
You can specify a custom decimal point, names of months, weekdays and their abbreviated forms.
You can also specify the text to display when the chart contains no data.

[source, java]
----
final Lang fi = new Lang();

// Set language properties
fi.setDecimalPoint(",");

fi.setMonths(new String[] { "Tammikuu", "Helmikuu", "Maaliskuu",
"Huhtikuu", "Toukokuu", "Kesäkuu",
"Heinäkuu", "Elokuu", "Syyskuu",
"Lokakuu", "Marraskuu", "Joulukuu" });

fi.setShortMonths(new String[] { "Tammi", "Helmi", "Maalis",
"Huhti", "Touko", "Kesä",
"Heinä", "Elo", "Syys",
"Loka", "Marras","Joulu" });

fi.setWeekdays(new String[] { "Ma", "Ti", "Ke", "To", "Pe", "La", "Su" });
fi.setNoData("Data puuttuu");
----

The [classname]`Lang` instance is set globally for all charts through [classname]`ChartOptions`:

[source, java]
----
ChartOptions.get().setLang(fi);
----

[discussion-id]`5FCAE9D2-4CEB-4600-A33D-A6082E36BC4F`