Add logarithmic scale option to RRD graphs
Some graphs have data at much different scales, such as the quality graph's loss and latency, where detail can be lost on the smaller scale when the larger has a spike.
Adding a logarithmic option can help show detail with both in some cases, and would be nice to have.It requires using absolute mode, so it could be a third option under style, for example:
- Absolute Logarithmic
In the RRD code, it must set a lower limit > 0 (e.g. 0.001), and pass the --logarithmic option.
See the attached patch, which forces absolute mode and uses logarithmic scaling for the quality graph only.
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