[chuck-users] how do you maipulate an array with rand2()?

[Malik Martin]

Hey Spencer,
i get no errors it works fine. it just doesnt do what i intended it to 
do. sorry if you've misunderstood me.
i'll try to be a bit more clear.

what i want it to do is take the values of the array wich i want to be 
position values fed back to buf.pos
and send buf.pos a random number. do you get it?

if i were to just erase the array and just tell  type 0 => buf.pos the 
patch would behave exactly the same.

i hope that was a bit more clear.
thanks for your help,
malik


Spencer Salazar wrote:

>Malik,
>Do you get any sort of error messages when you run this program?  It  
>seems to work on my machine.  The only potential problem that I can  
>see is that chuck might not be finding your WAV file.
>
>By output nothing, do you mean that it doesn't print anything, or it  
>doesn't produce audio output, or both?  If anything gets printed out,  
>can you post that?
>
>In general its okay to send patches to the mailing list, as far as I  
>am aware.
>
>  
>
>spencer
>
>On Nov 14, 2006, at 6:46 AM, Malik Martin wrote:
>
>  
>
>>hi Spencer thanks for the welcome!
>>glad to be here.
>>
>>i was suspecting that might be the case but didnt try it because i did
>>some research on the buf.pos
>>command because i kept getting an error saying the argument has 2
>>different types. It turns out that
>>buf.pos or formally speaking, SndBuf.pos only takes an int type so i
>>turned all the values to ints rounded to their
>>highest value in the one's place.
>>
>>this worked, but it still output nothing. the patch just works as  
>>if the
>>array that i made doesn't exist!! here is a copy
>> of the patch. but before i post it, would i be able to send  
>>patches as
>>attatchments
>>to the mailing-list?(would like to know for future refference)
>>
>>// the patch
>>SndBuf buf => dac;
>>
>>// load the file
>>"E:\samples\AmenMRZ2-180bpm.wav" => buf.read;
>>
>>//get number of samples
>>buf.samples() => int NumOfSamps;
>><<<NumOfSamps>>>;
>>
>>//get length in milliseconds by converting seconds to ms
>>buf.length() / ms => float length;
>><<<length>>>;
>>
>>// time loop
>>while( true )
>>{
>>    //1 bar at 180bpm cut into 8ths
>>    [ 0, 167, 333, 500, 667, 833, 1000, 1166 ] @=> int push[];
>>    push[Std.rand2(0,7)] => buf.pos;
>>    1333::ms => now;
>>}
>>
>>
>>
>>Spencer Salazar wrote:
>>
>>    
>>
>>>Hi Malik,
>>>Welcome to ChucK land!
>>>
>>>What you have found is a bug, the lack of a feature, or a result of
>>>strong typing (depending on your point of view), in which the type of
>>>the first element of an array determines the overall type of an
>>>array.  This is better explained by example:
>>>
>>>[ 0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75, 1166.375 ] @=>
>>>float push[];
>>>
>>>produces an error, whereas
>>>
>>>[ 0.0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75, 1166.375 ]
>>>@=> float push[];
>>>
>>>does not produce an error (but is functionally equivalent).  The
>>>difference is that the first element is explicitly a float when
>>>initializing the array of floats.  hopefully this clarifies things a
>>>bit.
>>>
>>>spencer
>>>
>>>On Nov 13, 2006, at 10:21 PM, Malik Martin wrote:
>>>
>>>
>>>
>>>      
>>>
>>>>hi i already posted this on the forums, but it doesnt seem as
>>>>active as
>>>>i imagine the mailing list might be(no offense of course).
>>>>
>>>>so here's my post
>>>>
>>>>hi
>>>>i'm trying to access an array with rand2() but i get syntax errors:
>>>>
>>>>while( true )
>>>>{
>>>>  //1 bar at 180bpm cut into 8ths
>>>>  float push[ 0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75,
>>>>1166.375 ]
>>>>   push[Math.rand2(0,7)] => buf.pos;
>>>>
>>>>   1333::ms => now;
>>>>}
>>>>
>>>>i made a second post with a minor update
>>>>
>>>>i noticed my syntax errors in comparison to otf_06.ck on page 49 in
>>>>the
>>>>manual and re-wrote it.
>>>>
>>>>// time loop
>>>>while( true )
>>>>{
>>>>  //1 bar at 180bpm cut into 8ths
>>>>  [ 0, 166.625, 333.25, 499.875, 666.5, 833.125, 999.75, 1166.375 ]
>>>>@=>
>>>>float push[];
>>>>   push[Math.rand2(0,7)] => buf.pos;
>>>>
>>>>   1333::ms => now;
>>>>}
>>>>
>>>>but i still get this error: [SndBufTest1.ck]:line(19): array init
>>>>[...]
>>>>contains incompatible types...
>>>>
>>>>Malik
>>>>_______________________________________________
>>>>chuck-users mailing list
>>>>chuck-users at lists.cs.princeton.edu
>>>>https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>>>
>>>>
>>>>        
>>>>
>>>_______________________________________________
>>>chuck-users mailing list
>>>chuck-users at lists.cs.princeton.edu
>>>https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>>
>>>
>>>
>>>      
>>>
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>>chuck-users mailing list
>>chuck-users at lists.cs.princeton.edu
>>https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>>    
>>
>
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