well.... it seems if I send just a number message into the right or left inlet of [jit.op @op +] and bang it, it works. I thought the tutorial said to send the message formatted with op and the math equation into the left inlet.....at least it's working but it doesn't follow really. thanks for any insight on this.

'op' is an attribute of the jit.op object. (see the jitter tutorial chapter called "Attributes" if you're not sure what that means.) the 'op' attribute determines what mathematical operation the object will use. you only need to send an 'op' message once to set the operator. for example the message 'op +' will cause the object to do addition, whereas the message 'op *' will cause it to do multiplication.

then whatever you send into the right inlet -- whether a single number or a matrix -- will be treated as the right operand of the operation applied to the matrix that comes in the left inlet. you can also specify a scalar for the right operand with a 'val' message to set the 'val' attribute. for example, 'op *' sets the operation to multiplication, and 'val 0.5' sets the object to multiply the input by 0.5.

there's a LOT of operations it can do. check the help file for a list.

Thanks for your post Christopher. I reread the attributes tutorial etc. I guess I am not formatting either the jit.op correctly or the message correctly.I am not finding instructions on how to correct this issue.

I try to follow the example and I get nothing working.

can you tell me the correct format for the jit.op object if I am sending it math messages? do I need the @op after the object name or the math function listed within the object? or just jip.op and then send in the message?

and how are you formatting the message to send? do you include @op, op or the mathematical function? or just the number ?

apologies as this is tedious but it seems important if I want to trigger messages to jit.op and I am nowhere after the tutorials. when I send the + 180 to the jit.op @op + it does change the window color to grey(my other messages have no effect) but I get an error jit.op: doesn't understand "+"

thanks again for your help Robbie

I'm having trouble opening the patch you sent. Still working on it- that may clear everything up. I used "new from clipboard" thinking it would uncompress but am not having luck yet. I'll keep trying. Thanks again.

Yes, I think (hope) the example I sent will answer some of your questions. Make sure you include the lines that say ----------begin_max5_patcher---------- and -----------end_max5_patcher----------- when you copy and then use the "New From Clipboard" command in the File menu of Max.

how did you know? yes I somehow did NOT copy between the pertinent begin and start patch!!

thank you very much Christopher. This looks very helpful and already i see the format info I was seeking in your patch.

Best Robbie