Exporting a data frame as an SDMX file

[larry77]

Hello,
It is really a question and not an issue. rsdmx exists to access SDMX data files from several providers read them into a data frame.

Suppose instead that you want to do the reverse: given a data frame, you would like to save it as an SDMX file for dissemination and upload to Eurostat.
How can you do that? Is it possible at all with rsdmx?
Thanks!

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[eblondel]

@larry77 support for writing SDMX files out of a data.frame would be great, and indeed I had in mind to draft this support, as rsdmx umbrella is not limited to reading. I don't really see how/when this can occur. Up until now i didn't do active development for rsdmx due to lack of sponsors/opportunities to boost its dev, altough to supports some user requests, contribs, and maintenance to keep rsdmx active on CRAN.
They are also other core enhancements that i'd like to push such as: boosting the SDMX-ML reading, SDMX-JSON support, R model refactoring (possibly switching from S4 to R6).

[eblondel]

Relates to #44