[vtkusers] alternative to vtkTable for use with vtkChartXY

[Luke]

>>
> Not at present, but it was always my intention to allow something a
> little lower level through for those who need performance. I was
> considering a fast path that allowed users to give the vtkPlot objects
> a well packed float with x1, y1, x2, y2. We could then either use the
> data in place, or perform a single copy operation.
>
> We haven't had any use cases concerned with real time data plotting so
> far, but this is an area I used to work in during some of my Ph.D.
> research.
>
> Marcus
>

I'll let you know how it performs once I get it implemented --
hopefully it won't be a bottleneck.

~Luke


-- 
"Those who would give up essential liberty to purchase a little
temporary safety deserve neither liberty nor safety."

-- Benjamin Franklin, Historical Review of Pennsylvania, 1759