XY Graph shows phantom dots when zoomed

[Shan]

I did just recently notice that I'm using the line plus single pixel marker.  Can't remember if that was intentional or a typo.  I have a feeling that choice might be related.  Just counted them up - 21 XY graphs in total - ugh.

[Darin.K]

That's it.  Now I see the dots whenever I choose the single pixel as the point style.  Regardless of the line style, the single pixel points show up as those 'phantom dots'.  Even in a brand new graph.

Forget that piece of advice!

[AStankov]

The dots in the graph exist. They stay there if you export to image to emf, which is a vector image format. They even appear connected in my emf.

[G-Money]

I'm seeing it too. I've played around with it for a little way but can't explain it yet. I'm tracking down some angles with R&D but I think this is going to be chalked up as a bug. Just the fact that it goes away with other plot point styles seems bug-ish. I'll keep you posted with what I find out. I haven't been able to find an existing bug report that matches this behavior or a workaround yet.

[AStankov]

But they are not exported to Excel. They are somehow connected to the graph but not to the plots.

[G-Money]

I also tried a smaller subset of the bundled arrays (during a timeframe that showed the ghost data points) but it doesn't show up in smaller datasets.

[Shan]

I'm able to re-create this problem now on any style xy graph - using a line WITH markers and the marker set to the single pixel point (a 10 when changing progamatically).

Thanks to Darin K for this observation.  I think this was a typo on my part or a misunderstanding of the codes for the programatic plot type setting.  I don't really know what the application for this type marker would be.  I set to line without marker (code 0) and problems dissappear.  Problem solved for me - but seems like there's still a bug to work out for NI(?)

Thanks all for the help.

Tim

[Kurt-P]

Hey Shan, 

I am the applications engineer you were coresponding with via email. I filed a Corrective Action Report, the number is #390619. The report is currently being processed and prioritized by the R+D team. You can use this number to see if the request was addressed in future releases of LabVIEW or can call to check the status. 

Thank you,

[BBend]

Hi Kurt

Have discovered same problem: When using pixel-size points I get phantom-points in my graph when I zoom in. These points are actually real points nearby the zoomed-in area, that are "draged" into the zoomed area when they should have been outside. When changing point-type they disappear, and all is normal. I was wondering what's the status of the bug-fix, and if we have to wait for next release of LV 2013 in Aug, or if we can download a fix soon?

If not, will installing LV2011 and build my exe in 2011 fix the problem or does it have the same bug?

Regards

Bård

[GybrushThreepwood]

I'm using LV2012 + win 7 and the problem still seems to persist. Within a x,y plot, independent of the kind, if classic or silver etc, i one of the point styles that include a single pixel as point representation is selected, then ghost points appear if one zoomes into the vicinity of 1 or 2 points. the more zoom, the more ghost points seem to apperar.

The point representations  4, 8 and 10 (property node plot.pointstyle) are the ones with the pixel point. 

The data into the graph and from the graph seems not to be influenced.