[PD] Problem with Textfile and line with float
ailo
ailo.at at gmail.com
Wed Jun 30 10:17:19 CEST 2010
One way to do it is to change the order:
toto float 0 1 2
This way "float" is treated as a symbol.
On 06/30/2010 09:58 AM, matohawk wrote:
> Hi Jonathan,
>
> Yes I know textfile "works" but I can't put any kind of object behind
> this Texfile.
>
> I'll try all list object and this the same problem.
> Look this :
> http://www.th-th.fr/DOCS/Patch/bug-texfile.pd
>
>
> I need to read this line with float at the begining but I can't.
> So I think we will take a script to do this because textfile can't do
> this.
>
> Thanks for your help
> Thomas
>
>
> Jonathan Wilkes a écrit :
>> 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
>> <mailto: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
>> <mailto: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>
>> <mailto: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/> <http://www.th-th.fr>
>>
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>>
>>
>> -- Pedro Lopes
>> contacto: jazz at radiozero.pt <mailto:jazz at radiozero.pt>
>> <mailto: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 <mailto:jazz at radiozero.pt>
>> website: http://web.ist.utl.pt/Pedro.Lopes
>>
>>
>>
>>
>> --
>> Pedro Lopes
>> contacto: jazz at radiozero.pt <mailto:jazz at radiozero.pt>
>> website: http://web.ist.utl.pt/Pedro.Lopes
>>
>
>
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