In the latest release, I changed the source of the software used to produce the plots from the emoncms site to a CDN (Content Delivery Network). The intent was to remove the dependency on the emoncms site, and at the same time improve graph load time because the CDN files are typically cached all over the place.
It looks as if the version of flot that is being used does not have support for the zoom. There is no documentation that I can find to indicate version in the emoncms site, so I have to figure this out.
In the meantime, if you want to replace your graph.htm file with this file that reverts to using the emoncms site, you will hav ethe zoom back until I can work this out and get the fix into a new release. graph.htm (15.0 KB)