I would like to graph data that can take these 6 discrete values: 16, 64, 256, 1024, 4096, 16384
Unfortunately, the logarithmic scale of rrdtool is base 10, not base 2, so that scaling is not quite correct. I am also unable to get a sensible yaxis grid numbers this way (either SIunits or exponential, both is ugly).
If I compute the logarithm with base 2 from the values as cdef, I get the values 4, 6, 8, 10, 12, 14, which are nice to graph. This is how the graph should look like. But I cannot get the yaxis description to 16, 64, 256 etc. Only to 4, 6, 8, etc.
Does anybody has a hint what I can do to graph the values as 4, 6, 8... but show 16, 64, 256... on the yaxis? Is there a feature in rrdtool that enables me to compute yaxis numbers instead of just formatting?
