Plotting graphs

[SanderNielen]

It looks like the xlabel and ylabel names are exchanged in the first plot.
Also, the two plots have different time intervals. The first one has
date_from="2012-01-01 00:00:00", date_to="2012-01-31 00:00:00",
while the second (stack)plot has date_from="2012-06-01 00:00:00", date_to="2012-06-8 00:00:00".

I'm asking this, because I do not succeed in creating a decent plot with this example.

[c-moeller]

@SanderNielen I've somehow overseen this issue, sorry! This repository here is at the moment just a development repository for a special project, so not everything might work.. and especially the example in the master branch is quite outdated.. I'm going to make this clearer in the readme file.