Graph label (y) loss of precision

[arc12]

Hello -
excellent tool Thomas; the best I found for my scenarios

One issue, which I suspect relates to #84 is that your efforts to make things more concise do not work well when values are quite large but vary only a little.
For example, I log CO2 concentration in ppm. This is often > 1000ppm, but with all labels as "1k", variations from 1250ppm to 1300ppm (for example) mean I see five axis labels of "1k".
I appreciate graph plotting is harder than it initially seems (I've wrestled with many!), but maybe consider allowing the user to specify a scale multiplier in the graph configuration e.g. "0.001", showing the multiplier with the axis title, and giving the value labels to 3 or 4 significant figures.

[GerMarsh]

I have this too. Thank you for reporting it.

[g6094199]

this is related to #615 , too

i see this behavior either, see:

maybe it a regression of #85