#7 Prevent overflow exception from single point Inf/NaN data

[C. Gleerup]

small modification that checks input data and does nothing in case of NaN/Inf when drawing single point.
this prevents a possible stackOverflow exception from system drawing.

[C. Gleerup]

[C. Gleerup]

whopsi, i might add, the relevant file is:
\src\LinePlot.cs
line 109, just below PointF physical = t.Transform( data[0] );
add
if (float.IsNaN(physical.X) || float.IsInfinity(physical.X) || float.IsNaN(physical.Y) || float.IsInfinity(physical.Y))
{
return;
}