This was discussed in the thread "Translations of Math environments in LyX
output for LyX 2.2" at http://www.mail-archive.com/lyx-docs@lists.lyx.org/msg08633.html
and has been reviewed. The problem was that in 2.1, the portuguese translation
was correct in lib/layouttranslations but different in po/pt_PT.po. In fact,
the translation is the same for all three languages spanish, portuguese and
brazilian portuguese.
After some discussion between Georger, Pedro, Pavel and me Georger came to the
conclusion that Mapa is not the correct translation of Chart in this context.
Originally he proposed Gráfico, but since that would be identical to the
translation of Graph we decided that Diagram is better. It is a bit more
general than Gráfico, but it is also used in pt_PT, and the german translation
uses the german equivalent, which is more general as well. Those who need a
Gráfico can still use Graph.
Unfortunately Geoger based the new .po file on the remerged one at
259196e1a6, so we have now the situation that pt_BR is remerged, but the
other languages are not.
The translations have been merged by calling
python development/tools/mergepo.py -n ../lyx-2.1-git/po
cd po; make update-gmo
For some languages it may make sense to merge also changed translations,
but this neds to be decided by the individual translators.
