search for: fm3dnase1

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2000 Oct 14
2
Access to calculations in nls
Hi, I would like to be able to access the calculated results from the nls package. Using the example in R, fm3DNase1 we can reurn certain parts of the calculations: > coef(fm3DNase1) Asym xmid scal 2.345179 1.483089 1.041454 > resid(fm3DNase1) [1] -0.0136806237 -0.0126806237 0.0089488569 0.0119488569 -0.0025803222 [6] 0.0064196778 0.0026723396 -0.0003276604 -0.0187778127 -0.0237778127...
2004 Dec 09
1
Results of nls
This might be an easy question. I tried to catch the results of nls, but to no avail. For example, if I try to fit a modle y~A*x*x+B*x+C nls will print out what A, B, and C, but how can I store these numbers to a different variable so that I can make use of them? I tried to "unclass" the result of nls, but couldn't see any of the parameters. Y C Tao
2007 Jun 07
2
Nonlinear Regression
Hello I followed the example in page 59, chapter 11 of the 'Introduction to R' manual. I entered my own x,y data. I used the least squares. My function has 5 parameters: p[1], p[2], p[3], p[4], p[5]. I plotted the x-y data. Then I used lines(spline(xfit,yfit)) to overlay best curves on the data while changing the parameters. My question is how do I calculate the residual sum of squares.