Originally created by: mark.tun... (code.google.com)@gmail.com
Originally owned by: mark.tun... (code.google.com)@gmail.com
Charts: allow user to specify the y-axis range.
Currently we let the JFreeChart control automatically select the y-axis range.
Since we allow them to specify the x-axis range (the dates) we should let them select the y-axis range as well.
Suggested by Philippe Peylin on a telephone call in 2011. Also his email 29 Jan 2012 when he says "graph y range: order of magnitude not consistent depending on the time period considered". Think he means that the y-axis range is automatically set to be appropriate for the data currently being viewed on the graph. But this seems sensible behaviour. Logical way to address his point would be to allow the user to customize the y-axis range.