• Thot

    Hello All,
    I'm totally new to pd and so far I am having fun.
    I have a specific problem but my question is more general.
    I have written a sub-patch to perform the "Sign" function that is missing from pd (if it is not and I just missed it, it's a good exercise anyways). It takes any number and output -1 for negative numbers, 0 for 0 and +1 for positive numbers.
    It works well except when I input the first negative number, that is, when the previous number was >= 0, the output is, wrongly, 0. From the second negative number on, everything works.
    I tracked it down to a [+ ] object. Is seems that it adds the current left inlet input to the PREVIOUS right inlet input. Please see patch "Sign 1".
    If I change the order in which I connect things the behavior does not seem to change.
    I found a workaround, but it is an ad hoc one, so my function now works (Sign 2).
    But I suspect this thing of hot/cold is a common problem and I was wondering if there is a more general solution to make my first patch work.
    I am not sure, for instance, if [trigger] would be useful here and how to implement it.

    Ah, and if the Sign function does already exist, please let me know, I am a big fan of NOT reinventing the wheel :)

    Thanks

    http://www.pdpatchrepo.info/hurleur/sign_1.pd

    posted in technical issues read more
  • Thot

    Hello All,
    I'm totally new to pd and so far I am having fun.
    I have a specific problem but my question is more general.
    I have written a sub-patch to perform the "Sign" function that is missing from pd (if it is not and I just missed it, it's a good exercise anyways). It takes any number and output -1 for negative numbers, 0 for 0 and +1 for positive numbers.
    It works well except when I input the first negative number, that is, when the previous number was >= 0, the output is, wrongly, 0. From the second negative number on, everything works.
    I tracked it down to a [+ ] object. Is seems that it adds the current left inlet input to the PREVIOUS right inlet input. Please see patch "Sign 1".
    If I change the order in which I connect things the behavior does not seem to change.
    I found a workaround, but it is an ad hoc one, so my function now works (Sign 2).
    But I suspect this thing of hot/cold is a common problem and I was wondering if there is a more general solution to make my first patch work.
    I am not sure, for instance, if [trigger] would be useful here and how to implement it.

    Ah, and if the Sign function does already exist, please let me know, I am a big fan of NOT reinventing the wheel :)

    Thanks

    http://www.pdpatchrepo.info/hurleur/sign_1.pd

    posted in technical issues read more
  • Thot

    I think I just found the answer to my question.
    You can use the

    posted in technical issues read more
  • Thot

    Can you read the timer (seconds since the computer was turned on) in pd and feed it to the seed?
    That's how it is done in BASIC:
    RANDOMIZE (TIMER)

    Note the Yankee spelling :)

    posted in technical issues read more
  • Thot

    Thanks! Your solution is soo much more elegant! I'll give it a try!

    posted in technical issues read more
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