Say Hello! to Multilingual Shiny Apps
summary
A bilingual English‑Welsh Shiny app for public health data is built with translation logic embedded rather than relying on auto‑translate packages that lack domain dictionaries. Translation forces UI elements to become reactive and breaks R's default alphabetical factor ordering, so the app processes data in English and sets factor levels in English then generates translated labels with three functions (compute breaks, compute labels, render). The approach works but adds overhead and makes translation the first design concern and the last code to run.
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