Hi Am 24.06.2014 17:37, schrieb AntonioLocandro:
My two cents, just add/leave the possibility to add a scale bar in m, km, Nm, whatever unit. Let the user decide if it's right or wrong.
+1
A simple and effective solution is to provide a message stating that scale bars in other units than degrees are not accurate or something along that line, mainly just as a reminder for people that may forget the data is unprojected when in composer
if a scale bar is accurate or not depends on the projection and size of area (and unit if unit != degree and projection = EPSG:4326 (and maybe some others)), so the scalebar may (almost) _always_ be suitable or not so this message must be always visible.
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