Updating Graphs

Hello Lin,

Even if it's working, have you also tried this ? :

AppendToGraph/W=Window1#graph wave1 vs wave2 //see SubWindow syntax

Sometimes, the SetActiveSubWindow instruction may be useful too.

Regarding the other stuff, I think your problem is that you always append the traces, even if they have already been appended.
I would suggest to define a boolean variable to know if the trace was already plotted or not.

variable /G bool_Plotted = root:bool_Plotted

If (bool_Plotted == 0)
    AppendToGraph/W=Window1#graph wave1 vs wave2
    bool_Plotted  = 1
Else
    Print "Trace already plotted"
Endif

So that, no need to explicitely update anything.

Best Regards

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Rather than using a global to keep track of what has been plotted, use the CheckDisplayed operation to check if the wave is already displayed in the graph.

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Another little tip you might find useful is that operations that create windows (like Display and Newpanel) when run in a function create a string variable called S_name that contains the name of the created window or subwindow. Here's a trivial example function that collects a full path to a subwindow:

function test()

    NewPanel
    String fullpath = S_name
    Display/HOST=$fullpath
    fullPath += "#"+S_name
    print fullPath
end

You could use the string fullPath later to refer to your graph window. In code, it's generally a good idea to explicitly name windows, rather than depending on the active window. So instead of writing AppendToGraph, write something like
AppendToGraph/W=$fullPath ...

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com

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