Lp.stacey crashing in max-msp xp


    Jul 14 2006 | 2:13 am

    • Jul 15 2006 | 3:13 pm
    • Jul 15 2006 | 7:12 pm
      On 15-Jul-2006, at 17:14, George (Poonkhin) Khut wrote:
      > The output of the standard deviation reports a
      > strange value in the number box: "-1.#IND"
      There are a couple of "strange" strings that are actually pretty
      common: #INF, #NAN. I know what they are (calculations that result in
      infinity or undefined values--'not a number'--respectively). #IND was
      new to me, but Googling indicates that the C libraries used on
      Windows report #IND for not-a-number im certain circumstances.
      There a variety of explanations for this, all depending on the input
      data, and they are not necessarily bugs.
      When using lp.stacey in window mode, it is quite possible for
      floating-point precision errors to accumulate. This is also an issue
      with other objects that maintain running averages and the like. I
      seem to recall average~ having a similar issue that was discussed a
      few months back.
      I will take a closer look at stacey's code to see if I can handle
      these problems in a way that is less surprising to the user. It would
      be extremely helpful to have a data set that produces the error.
      Best -- Peter
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