Lp.stacey crashing in max-msp xp

Jul 14, 2006 at 2:13am

Lp.stacey crashing in max-msp xp

#26792
Jul 15, 2006 at 3:13pm

#80538
Jul 15, 2006 at 7:12pm

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

————– http://www.bek.no/~pcastine/Litter/ ————-
Peter Castine | +–> Litter Power & Litter Bundle for Jitter
| Universal Binaries under way!
|…………………………………………..
Composer | iCE: Sequencing, Recording, & Interface Building
Sonic Artist | for Max/MSP
Software Developer | http://www.dspaudio.com/ Extremely cool
|…………………………………………..
p@castine.de | home|chez nous|wir http://www.castine.de/

————– http://www.bek.no/~pcastine/Litter/ ————-
Peter Castine +–> Litter Power & Litter Bundle for Jitter
Universal Binaries on the way
iCE: Sequencing, Recording &
Interface Building for |home | chez nous|
Max/MSP Extremely cool |bei uns | i nostri|
http://www.dspaudio.com/ http://www.castine.de

#80539

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