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passing variable for plot expression in plot() COMMAND

RFStuff

Dear All,

I want to pass  a variable for wave expression in plot() .

The below command gives the wave name as waveName

plot(drCreateWaveform(drCreateVec('double xList) drCreateVec('double yList)) ?expr '("waveName") )

If I want to pass a variable to ?expr '(" "), how it can be done ?

Kind Regards,

Parents
  • Andrew Beckett

    Use list() rather than '(). So:

    waveName="RFStuff"
    plot(drCreateWaveform(drCreateVec('double xList) drCreateVec('double yList)) ?expr list(waveName))

    The quote function prevents its arguments from being evaluated, so you just need to use list instead (which will evaluate all of its arguments, like most functions do).

    Regards,

    Andrew

Reply
  • Andrew Beckett

    Use list() rather than '(). So:

    waveName="RFStuff"
    plot(drCreateWaveform(drCreateVec('double xList) drCreateVec('double yList)) ?expr list(waveName))

    The quote function prevents its arguments from being evaluated, so you just need to use list instead (which will evaluate all of its arguments, like most functions do).

    Regards,

    Andrew

Children
  • RFStuff
    in reply to Andrew Beckett

    Thanks Andrew.

    Suppose my list  is MY_LIST=list("RFStuff" "Andrew")

    In first iteration of plot (in a for loop say)  it should be passed as "RFStuff".

    In the second iteration  it should be passed as "Andrew".

    How this can be achieved here ?

  • Andrew Beckett
    in reply to RFStuff

    foreach(waveName MY_LIST
      plot(... ?expr list(waveName))
    )

    would do what you want. Maybe you want something like this?

    xData=list(
      list(1 2 3)
      list(1 2.4 4 5.6)
    )

    yData=list(
      list(2.0 1.4 5.2)
      list(-1.2 3.4 8.7 7.2)
    )

    MY_LIST=list("RFstuff" "Andrew")

    foreach((xList yList waveName) xData yData MY_LIST
      plot(drCreateWaveform(drCreateVec('double xList) drCreateVec('double yList)) ?expr list(waveName))
    )

    Regards,

    Andrew.

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