LabVIEW
Stacked waveform chart redraw bug?
Hello,
I have an NXG style waveform chart in LabVIEW 2019 displaying data from two channels. This all works and looks good.
If I then switch the chart over to stacked plot mode, the plot area does not get cleared on update. Instead successive updates are overlayed on one another, building up a solid block of color. Kind of a cool effect:
What's interesting is that if another control is placed on top of the waveform chart, obscuring the plot area, the plot updates correctly. Presumably a full control redraw is forced when another control is sitting on top of it.
This issue only seem to happen when t0 of the waveform is unchanging. The stacked plot mode is fine in silver, modern, and classic styles.
Update: After writing all that up, I discovered it's not the NXG control, but rather the control's transparent border. If this is set to a color, it works. Similarly if the borders of stacked waveform charts in other styles are set transparent, there's the redraw bug.
Is this a known issue?
Edit: Chart, not graph
