but I've also been having fun with the free gnuplot utility (handy for my *nix boxes) which is a little frightening to start with because it's quite complex, but which does lots of things 'right' by itself.
Here for example is some semi-real-time graphing of the state of my off-grid battery. When it gets near 11V in Dec/Jan you can expect to see me switching my server to mains power to ride out the worst:
But then here's some other pretty graphs I generate from slightly-less real-time data:
Solar PV generation over the last couple of years:
Our gas consumption (currently struggling to beat last-year's numbers for September!):
Can be made to look a lot prettier, but all of those only required a bit of data processing up front and a few lines of gnuplot script to make.
Edited 3 time(s). Last edit at 09/27/2010 07:20PM by DamonHD.