Ah right, the trouble you’re having is those feeds are only recording when the values change, whereas EmonCMS is really expecting to receive more regular data (e.g. every 10 seconds).
Yes, this will help a bit, but the Graph still isn’t best suited for plotting discrete values.
Comparing your first two charts “interval 120” vs. “interval 15”, is it the sloped sides that you object to? This would look better if drawn with “Steps”, which was requested by this topic:
I’ve recreated the type of feed you have, where only changes are recorded.
Here’s that same data plotted with steps: (using my pull request)
The code change is quite simple, if you’re able to apply it to your instance.
If I’m understanding you correctly…?