search for: lvef

...a number of ways in R to do this and can't find a good solution. (I could do it out of R in perl or awk but would like to know how to do this in R). I have a large data frame 49 variables and 7000 observations however for simplicity I can express it in the following data frame Base, Image, LVEF, ES_Time A, 1, 4.32, 0.89 A, 2, 4.98, 0.67 A, 3, 3.7, 0.5 A, 3. 4.1, 0.8 B, 1, 7.4, 0.7 B, 3, 7.2, 0.8 B, 4, 7.8, 0.6 C, 1, 5.6, 1.1 C, 4, 5.2, 1.3 C, 5, 5.9, 1.2 C, 6, 6.1, 1.2 C, 7. 3.2, 1.1 For each value of LVEF and ES_Time I would like to normalise the value to the maximum for that factor g...

...the points. I also get no error. I arm using V 2.10.0 on Windows 7. Here is my code, including the SAS transport file import: require (foreign) require (chron) require (Hmisc) require (lattice) clin <- sasxport.get("y:\\temp\\subset.xpt") attach(clin) plot.new() xyplot(jitter(b.lvef)~jitter(log.fgf), main="Scatter Plot of Baseline Ejection Fraction\nby Log10 FGF-23", ylim=c(10,90), ylab="Ejection Fraction", xlab="Log10 FGF-23") abline(lm(b.lvef~log.fgf)) Any suggestions appreciated. Thanks, Gerard [[alternative HTML v...