How do I programmatically change the plot legend names on my xy graph?

I have a need to change the names/labels on my XY Graph's Legend at run time. This is because plot 0 is not always the same set of data. I have searched high and low for a couple days now to no avail. The closest thing I've seen is overlaying a string over the plot legend, but I would prefer to do change the property of this box. Any help would be appreciated.

Hello Ben,
with waveforms this also works for me fine. So where is the pitfall? (if always all works fine, one don't really gets experience)
greets, Dave
P.S. @ J.B. I used the Code Capture Tool from the Starware Thread, this made me so fast. If I could do, I would give it five stars each time I use it.
Btw. would it be possible to programmatically give ratings with LV? Here it should be used. Thanks again to tst & the others
Message Edited by daveTW on 06-14-2007 09:13 AM
Greets, Dave
Attachments:
Example_FP.png ‏5 KB

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How to remove entries from the plot legend?

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I have got a waveform graph to display measurement data. Sometimes there will be 40 plots shown. The plot legend also expands to 40 and I limit the number of elements shown in the Plot legend and I have activated the vertical scroll bar. Of course 40 plots are too many to work with. So the user has the ability to select plots to be shown. Now I want to decrease the number of elements in the plot legend as well. But if there were once 40 elements the plot legend remains in this size and the vertical scroll bar indicates that there are more elements than shown even if there are only e. g. two plots in the graph.
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Regards, Jörn

Hi Suse,
your example does not exactly solve my problem. I wanted the plot legend always to show 10 legend entries.
But it helped me to find the solution: set LegNumRows to 10 and set LegPlotMin to the number of plots in the Graph (see attached example).
One thing is still missing: setting the plot number currently at the top of the legend. If you run the attached example with 30 plots shown, scroll the legend down and run the VI once again with 3 plots shown then you will see no plots in the legend despite the fact that all could be shown. You need to move the scroll bar first to see the 3 elements.
Best regards, Jörn
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Message Edited by GerdW on 03-14-2007 04:28 PM
Best regards,
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Gurdas Singh
PhD. Candidate | Civil Engineering | NCSU.edu

Hi Sarah,
Looks like you are talking of exactly what I want!
I have attached a sample VI to try achieve what I want. But it still has some issues which are:
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Message Edited by Gurdas on 03-27-2006 11:51 PM
Gurdas Singh
PhD. Candidate | Civil Engineering | NCSU.edu
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Graph_PlotLegend_Event.vi ‏45 KB

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Attachments:
Plot color behavior.vi ‏27 KB

How do I programmatically change the plot legend names on my xy graph?

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