Re: [R] zigzag confidence interval in a plot

2013-05-17 Thread Rui Barradas
Hello, Try the following. lmR <- lm(cd$Depth ~ cd$CHAOsep12RNA) pconfR <- predict(lmR,interval="confidence") pcR <- pconfR[order(pconfR[, 1]), ] # Add this line plot(cd$CHAOsep12RNA,cd$Depth, ylim = rev(range(0:100)), xlab="CHAO", ylab="Depth", pch=15, las=2, main="Sep12-RNA", cex.main=1) a

Re: [R] zigzag confidence interval in a plot

2013-05-17 Thread Peter Ehlers
On 2013-05-17 06:03, Ozgul Inceoglu wrote: Dear All, When I plot the values and linear regression line for one data set, it is fine. But for another one I see zigzags, when I plot the confidence interval cd Depth CHAOsep12RNA 9,94804 25,06 1476,83 40,04 1540,561404 50,11 1575

[R] zigzag confidence interval in a plot

2013-05-17 Thread Ozgul Inceoglu
Dear All, When I plot the values and linear regression line for one data set, it is fine. But for another one I see zigzags, when I plot the confidence interval >cd Depth CHAOsep12RNA 9,94804 25,06 1476,83 40,04 1540,561404 50,11 1575,17 52,46 349,22 54,92 1941,5 57,2