Displaying 5 results from an estimated 5 matches for "fz1".
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2009 Feb 03
3
non linear regression with nls
..."NH4.N" "NO3.N" "BOD5" "SiO2"
I need to predict every variable (PTG, PO4, NT, ..., which are concentration of substances in water) starting from
the "Portata" variable (which is the water flow)
The functions that I'm using are:
> 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)}
> fz4<-function(Portata, b, d){b*Portata^d}
> fz5<-function(Portata, a, b, d){a+b*(Portata^d)}
I've made a list of th...
2009 Feb 10
2
plotting the result of a nonlinear regression
Hello,
to plot the result of a singular non linear regression (using nls) I usually use the function plotfit, for example:
r.PTG.V<-nls(PTG.P~ fz1(Portata, a,b), data=dati, start=list(a=10, b=10), nls.control(maxiter=200), algorithm='port',
trace=TRUE, na.action=na.omit, lower=list(a=0, b=10), upper=list(a=100, b=100))
plotfit(r.PTG.V)
I tried to use the function plotfit on the result of the following for loop but I got an error mes...
2009 Feb 10
3
summary of a list
Hello,
I'm using the following for loop to find regression curves using a list of functions (formList), a list of starting
values (startList), uppervalues (upperList) and lower values (lowerList).
A sample of the list of function I use in the loop is the following:
FormList <- list(PTG.P ~ fz1(Portata, a, b), PTG.P ~ fz2(Portata, a, b), PTG.P ~ fz3(Portata,a, b, d, e),
PTG.P ~ fz4(Portata, a, b), PTG.P ~ fz5(Portata, a, b, d), PO4.P ~ fz1(Portata, a, b),
PO4.P ~ fz2(Portata, a, b), ...
And the loop I use is:
resultList <- list()
for (i in 1:length(formList))
{
resultList[[i]] <...
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list.
I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without
modifications.
How did I try it?
Created a (non-root) build environment (not a mock )
Installed the kernel.scr.rpm and did a
rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee
prep-out.log
The build failed at the end:
Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL
Checking
2009 Jul 23
1
[PATCH server] changes required for fedora rawhide inclusion.
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