Re: [R] non linear regression with nls

Thank you! It worked perfectly, also for the other variables! Messaggio originale Da: r...@life.ku.dk Data: 06.02.2009 13.29 A: lauramorg...@bluewin.ch Oggetto: Re: [R] non linear regression with nls Hi Laura, I think you have to make a list formulas: formList - list(NT.N ~ fz1

Re: [R] non linear regression with nls

A: lauramorg...@bluewin.ch Oggetto: Re: [R] non linear regression with nls Hi Laura, I've the following suggestion for you using several lists and a for loop: fz1-function(Portata, a, b){a+b/Portata} fz2-function(Portata, a, b){a*exp(b*Portata)} fz3-function(Portata, a, b, d, e){a+b/Portata+d*(Portata^e

Re: [R] non linear regression with nls

can someone specify the groups/subset? Thanks a lot! Laura Messaggio originale Da: kfr...@wisc.edu Data: 03.02.2009 15.36 A: lauramorg...@bluewin.ch Oggetto: Re: [R] non linear regression with nls Hi, Laura- You might have a look at ?nlsList(). Ken - Original Message - From

[R] non linear regression with nls

Hello, I'm a beginner with R and it's the first time I'm using the R-help list... I hope I'm in the right place, if not: Sorry!! I need to do non linear regressions on a data set which columns are: river.namePortata PTG.P PO4.P NT.NNH4.N NO3.N BOD5SiO2 I need to predict