Hello Everybody,
I got a very special problem which occurred to me mainly by "luck". But the error is reproducable every single time I tried it.
I am running LabVIEW 2012,(German) on a Lenovo PC with Windows 7.
The VI that produces the error adapts the appearance of a graph according to the type of data that should be plotted.
I attached the blockdiagram of the VI as a picture.
The graph is part of a VI that is inserted into another VI as a subpanel.
The problematic VI performes the following steps:
1) Take the Data as an array of waveforms.
2) Check which type of data it is and take the style information form a type definition .
3) Set the Graph style for both X and Y Axis: Autoscale?, Inverted?,Grid_Colors, Mapping(Linear/logarithmic),Boundaries, Axis_Style, Offset and Factor
4) Put the Waveforms into the Graph to ensure the correct number of plots for step 5 ( also the data needs to be put in anyways.)
5) Iterate over the plots and set: Line width, Line color,Line style, Dot Style,Visibility
6) Force a redraw.
If I perform all the above steps the VI crashes between step 4 and 5. This leads to a crash of LabVIEW in 100% of the time, LabVIEW need to be terminated by taskmanager. In about 5 % of the cases my whole operating system crashes, too.
The error will NOT occur if I do only one of these:
1) Use "empty" Waveforms . This means the Y array contains no data points.
2) Do not change the mapping of any axis. ( linear to logarithmic or vice versa)
3) Do not change the line style of any plot.
In case of the mapping it makes no difference if the change is not done or if the new mapping is the old mapping. In both cases the error will not occur.
For me the solution was to remove the Line Style change. I can live with that.
My Question is now: Does anybody know why this happens?
Regards,
Sebastian
