search for: pharmacologist

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2006 Feb 01
1
Broken x-axis?
Hello, Sorry for the double post, but I just subscribed.... Does anyone have experience creating a graph with a segmented x-axis? Specifically, as a pharmacologist, I frequently need to create a graph with 2 segments, one for vehicle, and one for active doses. Here is an example... | | | | |----| |----------------| Vehicle 1 3 10 30 etc.. Doses Any help is appreciated! Thanks, Dr. Brett C. Ginsburg Division of Alcohol and Drug Ad...
2013 Jan 12
2
Getting the R squared value in asymptotic regression model
Please help getting the R squared value in asymptotic regression model I use the code below model1<-nls(GN1~SSasymp (nrate,a,b,c), data = data.1 ) and R produced the modell coefficients without the R squared value? -- Ahmed M. Attia Research Assistant Dept. Of Soil&Crop Sciences Texas A&M University ahmed <ahmedatia@zu.edu.eg>.attia@ag.tamu.edu Cell phone: