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All, I currently have a dataset with a variety of different columns, let's say, A,B,C, and D. I'd like to run an R script that graphs only certain rows of the dataset based on what's in column A. In awk, it'd be something like: awk ' { if(A==5 && B ==6) print $0 } ' datafile | command or file Since I have just begun using R, I am unsure if awk is compatible in R

Dear Forum, I have been wracking my head over this problem for the past few days. I have a dataset of (x,y). I have been able to obtain a nonlinear regression line using nls. However, we would like to do some statistical analysis. I would like to obtain a confidence interval for the curve. We thought we could divide up the curve into piecewise linear regressions and compute CIs from those