search for: crossa

Displaying 2 results from an estimated 2 matches for "crossa".

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2003 Apr 21
3
To create a Panel and run a Pooled OLS
Dear all, I have tried to merge two cross sections (crossA and crossB) as follows, both crossA and crossB include the same variables, e.g., ID,y,x1,x2: Panel <- merge(crossA,crossB,by="ID") I have, thereafter, tried to run the following pooled OLS: OLS <- lm(Panel$y~Panel$x1+Panel$x2) and have received the following error message &quot...
2006 Sep 11
1
plotting curves
Hi, I've been trying to recreate plots of that follow a cubic form. The the original graphs I'm looking at were produced with specialized software (Delta Graph), and although I can reproduce it almost exactly with R, the only difference is in the actual display of the curves I've plotted. I've noticed that in R all curves are pixelated, regardless of howmany points I use. Is