search for: normalformula

...(myDensity) # Insert interval to represent width of one sigma arrows( x0=mu, y0= ss, x1=mu+sigma, y1=ss, code=3, angle=90, length=0.1) ### Write the value of sigma above that interval t2 <- bquote( sigma== .(round(sigma,2))) text( mu+0.5*sigma, 1.15*ss, t2) ### Create a formula for the Normal normalFormula <- expression (f(x) == frac (1, sigma* sqrt(2*pi)) * e^{~~ - ~~ frac(1,2)~~ bgroup("(", frac(x-mu,sigma),")")^2}) # Draw the Normal formula text ( mu + 0.5*sigma, max(myDensity)- 0.10 * max(myDensity), normalFormula, pos=4) ### Theory says we should have 2.5% of the area to...

I want to shade the area under the curve of the standard normal density. Specifically color to the left of -2 and on. How might i go about doing this? Thanks -- View this message in context: http://n4.nabble.com/Shade-area-under-curve-tp1586439p1586439.html Sent from the R help mailing list archive at Nabble.com.

I hope to use the plotmath facility to print titles that mix math and values of R variables. The help for "plotmath" has an example, which after repeated reading, I find baffling. Likewise, I have read the help file for "substitute" (wqhich seems to be needed) without ever understanding what it does, other than being used in some magic incantations. I would like to do