Due to some WIFI issues I had, I have a couple of periods of missing data on emoncms.org. Is it possible to use locally logged data (from emonpi) to fill in the holes?
Unfortunately not.
See the "Emoncms.org: editrealtime visualization nearly unusable (feature disabled) " thread for more info.
I have done something similar. I wrote a php script in the “usefulscripts” family that splices together feeds at user-specified points. It walks the user through the process of picking the feeds and start/end points. It also handles the input and output feeds being a mix of phpfina and phpfiwa.
I have moved feeds from emoncms.org to my local emoncms, where I’ve made spliced feeds to fill in holes in my local data.
It lives here: splice/splicer.php at master · brandock/splice · GitHub