[FR] decimal separator in the JWSACruncher

[AQLT]

It could be good to be able to change the decimal separator in the JWSACruncher to avoid a system dependency. This is linked to jdemetra/jwsacruncher#13.

[JanGerhardt]

Changing the decimal separator is not implemented yet but technically possible. In the current release, the locale defines the decimal separator.
To make it changeable, one could replace using the locale with using the settings from the cruncher’s params file (or its default settings) in the formatter classes. This would also affect some functionalities of JD+ which contain creating (csv) output files.
If some users made use of changing the locale for some reason (that is doable, e.g. with a plug-in), those functionalities would possible create a different output file than expected.
Therefore, it needs to be discussed when to use the locale and when to use an individual specification before the code is altered.
Besides, we found that the number of decimals ndecs from the params file is not applied correctly: In the DoubleFormatter class “9” is hard coded as the max number of decimals, so both the locale and the params settings have no influence.

[AQLT]

Currently, in my opinion, the problem is also that the decimal separator changes the column separator. If your local is a comma, then the exported file when you choose "CSV" or "CSV matrix" is not anymore a CSV file.
Moreover, being able to fix/change the decimal separator would improve the reproducibility of software results