Forums > Javascript

Correct JS syntax for M4L API Clip class "replace_selected_notes" series?

Feb 22 2010 | 7:21 am

Hi! Could anybody show me the proper JS syntax used to call the M4L API Clip class "replace_selected_notes" series?

call replace_selected notes
call notes 2
call note 60 0.0 0.5 100 0
call note 62 0.6 0.5 100 0
call done

I’m a tad confused due to there not being a "note" property for the
Clip class.

Any help would be greatly appreciated!!


Feb 23 2010 | 12:46 am

watchClip = new LiveAPI(this.patcher, null, "live_set tracks 0 clip_slots 0 clip");"replace_selected_notes");"notes", 1);"note 60 0.0 0.5 100 0"); //see note below"done");

the point at which i say see note is the sticky part. i hand over an array instead of a string, but i am being lazy and secretive.

MAKE SURE you keep a decimal point in those 2 numbers that have decimal points.

Feb 23 2010 | 4:29 am

that’s what I thought, yet I am getting 2 errors;

1.Clip has no attribute "note 60 0.0 0.5 100 0"
2.wrong note count

any idea as to why?


Feb 23 2010 | 3:20 pm


it can’t be a string. you must pass an array. (i was not sure of this, but now i am. i went with an array because i already had the note as an array, so it was just happy coincidence for me.)

and the parts that they say have to be doubles HAVE to be doubles. they MUST have decimal points.

it just doesn’t count any note message it doesn’t think is correct.

Feb 23 2010 | 3:22 pm

noteArray = [‘note’, 60, 0.0, 0.5, 100, 0];

watchClip = new LiveAPI(this.patcher, null, "live_set tracks 0 clip_slots 0 clip");"replace_selected_notes");"notes", 1);;"done");

Feb 23 2010 | 3:24 pm

eventually, i will post my whole solution in the form of the patch i am working on, but i hope this helped you.

Feb 24 2010 | 2:09 am

Yeah absolutely.Thanks. I tried passing an array minus the note portion. Thanks for the clarification!!


Feb 24 2010 | 7:17 am

When passing a float value of 0.0 as a parameter in the call, it is converted into an integer and then the compiler throws an "Invalid Syntax" Error due to the appropriate positions in the array not being floats. This only happens when 0.0 is used, 0.5 for instance, is recognized as a float!

The 0.0 in the call message comes up in the Max window as 0 !

Could this be a bug?
Has anybody else experienced this?

Feb 24 2010 | 1:11 pm

it isn’t quite a bug. it IS frustrating. javascript is ‘dynamic,’ so it interprets what a var is supposed to be and can usually figure it out correctly. but not in this case. i think the reason is that js is handing the number back to a less dynamically typed language.

and it would happen any time one of those numbers i s a whole number. any time. so annoying.

in any case, make 2 number objects from the 2 indexes and use toFixed. and then you are fine.

Mar 07 2010 | 1:55 am

and now i can stop being secretive!

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Forums > Javascript