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....lm2) #predict(demo.lm2,newframe,level=0) #Error in eval() : Argument "expr" is missing, with no default How can I fix this problem and get the predict() function to work? Thank you! ******************************************************************** Song Liu School of Statistics 313 FordH 224 Church St. SE Minneapolis,MN 55455

...ind the coefficients for both parametric term and nonparametric term, what do these coefficients for the nonparametric term stand for, the coefficients for the base functions? Thank you! Song ******************************************************************** Song Liu School of Statistics 313 FordH 224 Church St. SE Minneapolis,MN 55455