The RATS Software Forum

Dear Tom,

I just have a question about how to impose a long constraint in nonlin. For example, I want to impose the following constraint after declaring parameters
I will get an error: I guess the problem is from the incomplete bracket and I can not shorten the constraint. Could you please let me know how to deal with this situation? Thank you very much.

Regards

Parmset fields are separated by spaces, so once you have that space, it's assumed to be done. Can't you just rearrange it to

nonlin(parmset=test) a b c d e f g $
(a^b^c^d^e^f^g+c+f*g-c^100)/c^5==(a^b^c^d^e^f^g+c+f*g)

putting the $ between fields rather than in the middle.

Thank you for the reply. The actual constraint is longer than the example so that I could not fix that by rearranging it. I think I will try to simplify the constraint. Thank you very much.

You can go up to 256 characters on a line. However, I would be really concerned about getting a constraint that's that long input properly. You can simplify your sample to something like

nonlin(parmset=test) a b c d e f g powers=a^b^c^d^e^f^g $
(powers+c+f*g-c^100)/c^5==(powers+c+f*g)