Problems with graph XY 'forget' field properties

I have problems with a graphic XT in my loop.

The graph has 10 locations which at any time can have anything from 0 to ~ 1000 points, often a few plots will have much less ploints than others. There is an option to select the user to view all items or just the most recent game.

My problem is I want the chart to reflect the data input and a single point during an update, so I have a string of points rather than a line.

When I click with the right button on the chart and go to properties, I change the style of point of full circle and turn off the interpolation of the line. I then click on save these default values and save the vi.

However, once I run the vi, the graph keeps parcels 1 through 9 (not ground 0, this remains as I want) to have no displayed point and the line of interpolation on.

Anyone had this problem before? Ho solve you this problem?

I know it can be fixed, because I had this problem a few months ago on a similar vi and after weeks of struggle, I solved it, but I just do not remember how I did it.

Thanks for any help, at the moment I can't post any code. Note that the chart data show is all perfectly fine, just the properties of the plot are forgotten.

HI DarraghCorrigan,

With regard to the problem expressed in your initial post:

"once I run the vi, the graph keeps parcels 1 through 9 (not ground 0, this remains as I want) have no displayed point and the line of interpolation on."

This is due to a bug in the software LabVIEW by which all changes that are made to the parcel properties (for example to change the color of a conspiracy) will not be retained, except in field 0 that is not affected. Our R & D department are currently studying this problem so that it can be fixed in future version of the software. The solution recommended for this problem is to pragmatically set parameters of track at the beginning of the code using nodes of property.

As I understand it, is not the main issue you are experiencing. If you are setting the properties for a field (using a few nodes property described (e) which are then deleted or rewritten on a XY Chart, I understand, is that there is no way that LabVIEW can remember and preserve these properties.

As you rightly suggested, a way to easily overcome this problem would be to define default chart properties, so that when you remove/rewrite a piece and then add it again, it is always by default these properties. Unfortunately, it is not currently possible to do even if it was recommended as a suggestion of product is a feature that is to the study of implementation in future releases of LabVIEW.

I think that the question you need to address is the fact that you're at some point reset the graph by sending an empty array to him such that the set of your property are lost. If you can find and remove this section in your code, you should be able to solve your problem.

I hope this helps.

Best regards

Christian Hartshorne

NIUK

Tags: NI Software

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