Does anyone have any experience of this?
I have come across an article that (I think) mentions that this is possible (below), but I can't find the documentation to support this.
New Calculated Metrics and the APIs | Adobe Developer Connection
Ended up answering my own question after a lot of aimless clicking around; the documentation for creating Calculated Metrics in v1.4 of the API is subordinate to the documentation for Segments:
Calculated Metrics | Adobe Developer Connection
Thanks, @urs.boller, for the quick response.
there are a few docs to start with. i started with building the metrics in analytics and had a look in the api explorer (to see how i need to weite the JSON).
Get definitions of existing metrics: GetCalculatedMetrics | Adobe Developer Connection
after that, you can try to save some calc metrics:
SaveCalculatedMetrics | Adobe Developer Connection
when i made my first steps i had both the explorer and analytics opened at the same time to see what i do in API by watching the results in Adobe Analytics.