[Haskell-beginners] Setting x-range in haskell-chart

[Nathan Hüsken]

Hey,

I plot a chart where I use LocalTime for the x plot value.
I want to define what the range of the x axis is. So I try:

layout1_bottom_axis . laxis_generate .~ scaledAxis def (xmin,xmax)

where xmin, xmax :: LocalTime. This fails with:

No instance for (RealFloat LocalTime)

Anyone knows how I set the xrange correctly in chart?

Thanks!
Nathan