CLDR Ticket #10100(design data)
Flow direction of mathematical formula for ar* locales
Reported by: | tomerm@… | Owned by: | emmons |
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Component: | numbers | Data Locale: | |
Phase: | rc | Review: | |
Weeks: | Data Xpath: | ||
Xref: |
Description
Direction of math formula in Arabic speaking countries may be different from what English speaking countries are accustomed to.
In some countries it can be LTR (just like in USA):
x + y = z
While in others it can be RTL:
z = y + x
Some initial information on preferences in different countries is available from: http://www.wiris.com/editor/docs/resources/arabic-numbers-countries
Similarly to NumberingSystem property (which is different in different Arabic speaking countries: "arab" vs "latn"), the suggestion is to define MathFormulaDir property with possible values "ltr" and "rtl". For overwhelming majority of locales it will have "ltr" value. For several Arabic locales it will have "rtl" value.
Attachments
Change History
Changed 4 weeks ago by tomerm@…
- Attachment MathFormularDir.PNG added
Changed 4 weeks ago by tomerm@…
- Attachment MathFormularDir_GoogleMap.PNG added
Mapping math formula convention using Google Maps
comment:1 Changed 3 weeks ago by tomerm@…
For more information on math formulas in Arabic language please see:
https://www.w3.org/TR/2006/NOTE-arabic-math-20060131/
https://www.ima.umn.edu/materials/2006-2007/SW12.8-9.06/2289/MathArabIMAe.pdf
comment:2 Changed 3 weeks ago by tomerm@…
Some products allow configuration of formula direction (and digits shapes = [Arabic-Indic, Arabic-European]). For example see: http://www.wiris.com/en/editor/docs/reference/parameters
Very similarly to NumberingSystem property (which standardize default digits shapes for Arabic speaking countries), math formulas should have separate representation in CLDR. This representation can be used as main default to be used by various software packages.
Changed 3 weeks ago by tomerm@…
- Attachment MathFormulaDirConfig.png added
Math formula direction specification
List of math formula direction preferences for Arabic locales