I have some trouble With the graph XY, if I display a curve and try to zoom on it, it may be corrupted, or may disappeare​d.

In fact this happens on some computers. the graph XY causes some trouble when zooming. Sometimes, when I run my main program and open the window with the graph, it has change the displayed it overflows to the edge of the windows. Or somtimes it works but if I zoom the curves disappeared, or is corrupted.
I have this for instance on a computer with win 98 and a ATI graphic board. So I try to update all drivers but noting has changed. I try to decrease the hardware acceleration, and it seems to happen less oftenly.
Does anybody have seen that kind of trouble ?

> I have some trouble With the graph XY, if I display a curve and try to
> zoom on it, it may be corrupted, or may disappeared.
>
I think what you are describing is not due to video driver, but rather
to the way the graph works. The LV graph maps points to integer screen
coordinates and draws lines be tween those point. When the numbers are
way to large to fit on the screen, the numbers are pinned to a special
large value. When this happenson one axis but not the other, it causes
the slope of the line to change and potentially not cross the screen.
If this is the same effect I'm describing, it only takes place when you
zoom into the data by a large extent, pushing the other points about ten
to fifteen monitors away. At this point you are no longer
looking at
measured data, but rather just on the interpolation of a line between
two points. The solution if you must have one is to resample your data
on the diagram to contain more points.
Greg McKaskle

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