Guillaume,

many thanks for this improvement, it certainly will make scripts much
cleaner.
Regarding your questions:

.../...

>
> We would like to have your feedback on several points :
>
>    - We will likely change the keyword "*band*" to plural "*bands*", no
>    objection ?
>
> No problem, actually better

>
>    - Is the syntax clear / convenient / confusing ?
>
> I will not be using the "-" (e.g. -1) because I find it counterintuitive
(in R this would mean drop band 1), but there is no problem letting it be
if other people do like it.

>
>    - There can be a debate between 0-based and 1-based indexing for band
>    numbers. At the moment, it is not uniform in OTB but we think that 1-based
>    indexing should be the convention exposed to the user.
>
> Strongly support the 1-based.

>
>    - It is also possible to implement it on image writers, would it help
>    ? What would be your use-cases ?
>
> Yes! In some cases the user might want not to save all bands.

Regards,
Agus

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