[R] plotting polynomial regression line
amitkumartiwary at gmail.com
Sun Dec 20 19:35:09 CET 2009
I am trying to plot polynomial regression line to a scatterplot. I did
following so far:
> length(y$PCC) # y$PCC has values between 1 to 0 in decreasing order
> plot(x,y$PCC,col="red") #scatterplot between x and y$PCC
> reg=lm(y$PCC~poly(x,6)) # calculating polynomial fit with degree 6
In abline(reg, col = "blue") :
only using the first two of 7regression coefficients
After the above warning a line is drawn in the graph parallel to the
y-axis. But I was expecting a curve line through the scatterplot.
Am I doing something wrong? Please help!
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