[PD] Problem with Textfile and line with float

Wed Jun 30 01:52:52 CEST 2010

I could rephrase my question into a more generic one:
- what's the best policy in pdextended to modifying miller's objects* as
externals and load them for experiments?

*(because there all vannila objects)

On Wed, Jun 30, 2010 at 12:47 AM, Pedro Lopes <pedro.lopes at ist.utl.pt>wrote:

> Not trying to hijack this thread into a different subject, I was messing
> with the external in order to understand how it works. I got my mods on,
> compiled it, all ok.
>
> But how can I load it? pdextended always load a default "filetext", I even
> started with the -nostdpath but no luck. It doesn't load mine. I'm launching
> pd from the same dir as the filetext.pd_linux... What's the correct way to
> test externals in these conditions..?
>
> Some help?
>
> Best regards to all,
> Pedro
> p.s. also tryed >pdextended -path textfile.pd_linux (nothin'..)
>
>
> On Wed, Jun 30, 2010 at 12:24 AM, Jonathan Wilkes <jancsika at yahoo.com>wrote:
>
>> The problem occurs because Pd has several built-in message types, and the
>> float message is one of them.
>> Pd expects any message that has the "float" selector to have one argument,
>> and that argument should be a
>> float-atom (e.g., "float 1").  So if you type "float foo" in a message box
>> and click it, Pd complains about
>> "bad arguments" because (I think) when the message box tries to parse the
>> message, it sees the "float"
>> selector and thus expects a number for the argument, but instead it gets
>> the symbolic-atom "foo."
>>
>> In your example patch, if you disconnect all the objects from the outlet
>> of [textfile] and click
>> the [bng], you'll notice that you don't get an error.  I would take this
>> to mean that [textfile] does its
>> job-- its just that once you try to do anything with the message "float
>> toto 0 1 2" by connecting
>> [textfile]'s outlet to another object, Pd will catch the badly formed
>> message and report an error.
>>
>> (On the other hand, if your example text file had the line "float 3 0 1
>> 2," the first argument ("3") would be
>> the right type of atom, so Pd would just silently truncate
>> everything after the first argument.  But you'd still get an error from
>> the
>> right inlet of [select float] because, ironically, by making the first
>> argument of [select] the word
>> "float" instead of a float-atom like "3," you are instantiating a [select]
>> object that expects symbol
>> messages and not floats.)
>>
>> As far as a solution, you could begin each line of your text file with the
>> selector "list", or a word that
>> is not the selector of Pd's builtin messages.  If you're reading in
>> arbitrary data and you can't control
>> whether each line starts with something that could be confused for a
>> built-in Pd message type, I'm not sure
>> what the best solution is.
>>
>> -Jonathan
>>
>>  ------------------------------
>> *From:* Pedro Lopes <pedro.lopes at ist.utl.pt>
>> *To:* matohawk <matohawk at gmail.com>
>> *Cc:* pd-list <Pd-list at iem.at>
>> *Sent:* Tue, June 29, 2010 6:49:44 PM
>> *Subject:* Re: [PD] Problem with Textfile and line with float
>>
>> humm.. I see what you mean now. It gives a error with the float argument
>> when it arrives at the objects after the textfile. I'm trying to figure out
>> the reason for that.
>>
>> On Tue, Jun 29, 2010 at 11:42 PM, Pedro Lopes <pedro.lopes at ist.utl.pt>wrote:
>>
>>> I did that, but what are you expecting your patch to do?
>>> Should it send each object read from text file separately?
>>>
>>> 'Cause here (with the patch I explain in my previous reply) the textfile
>>> reads your file and outputs all the values to a [print list] so then its
>>> just a matter of manipulating that into what you want.
>>>
>>> I used your file for the tests. I can try to look and guess what do you
>>> intend, but its probably less ambiguous if you explain the purpose. :)
>>>
>>> Best of luck,
>>> Pedro
>>>
>>>
>>> On Tue, Jun 29, 2010 at 11:36 PM, matohawk <matohawk at gmail.com> wrote:
>>>
>>>> Hi Pedro,
>>>> Sorry I think I'm not very with explanation.
>>>> I know how textfile works it's not my problem
>>>> Have a look of this patch and textfile, it's better to understand the
>>>> problem:
>>>> http://www.th-th.fr/DOCS/Patch/bug-texfile.pd
>>>> http://www.th-th.fr/DOCS/Patch/text-float.txt
>>>>
>>>> Download the twho files, open the patch and click on bang
>>>>
>>>> Cheers,
>>>> Thomas
>>>>
>>>> Pedro Lopes a écrit :
>>>>
>>>>> I'm not following the "concept" behind your code.
>>>>>
>>>>> Notice that you can connect a message box "print" and send that command
>>>>> to textfile. And it reads your file to the pd shell correctly.
>>>>>
>>>>> [read your-file.txt]
>>>>> |   [print(  <-- this is a message
>>>>> | /
>>>>> |/
>>>>> |  [bang] <-- hit this to read,.
>>>>> | /
>>>>> |/
>>>>> [textfile]
>>>>> |
>>>>> |
>>>>> [print list]
>>>>>
>>>>> And it works. Take a look at the help file, it shows hot to use it. I
>>>>> hope I'm understanding your issue, if not, hopefully someone does :)
>>>>>
>>>>> Best of luck,
>>>>> Pedro
>>>>> p.s: remember to use the "rewind" message to textfile, because
>>>>> otherwise it doesn't read the line again! Because it moves forward with the
>>>>> seek file pointer.
>>>>>
>>>>> On Tue, Jun 29, 2010 at 10:37 PM, thomas thiery <matohawk at gmail.com<mailto:
>>>>> matohawk at gmail.com>> wrote:
>>>>>
>>>>>    Hi pd-list,
>>>>>
>>>>>    test this patch, I saw a curious problem. I need to read line with
>>>>>    "float" at the begining of a line and textfile can't do this.
>>>>>    It's a pity
>>>>>
>>>>>    --     Matohawk alias Th-Th
>>>>>    www.th-th.fr <http://www.th-th.fr>
>>>>>
>>>>>    _______________________________________________
>>>>>    Pd-list at iem.at <mailto:Pd-list at iem.at> mailing list
>>>>>
>>>>>    UNSUBSCRIBE and account-management ->
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>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Pedro Lopes
>>>>> contacto: jazz at radiozero.pt <mailto:jazz at radiozero.pt>
>>>>>
>>>>> website: http://web.ist.utl.pt/Pedro.Lopes
>>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>
>>>
>>>
>>> --
>>> Pedro Lopes
>>> contacto: jazz at radiozero.pt
>>>  website: http://web.ist.utl.pt/Pedro.Lopes
>>>
>>
>>
>>
>> --
>> Pedro Lopes
>> contacto: jazz at radiozero.pt
>> website: http://web.ist.utl.pt/Pedro.Lopes
>>
>>
>
>
> --
> Pedro Lopes
> contacto: jazz at radiozero.pt
> website: http://web.ist.utl.pt/Pedro.Lopes
>

-- 
Pedro Lopes
contacto: jazz at radiozero.pt
website: http://web.ist.utl.pt/Pedro.Lopes
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