Description Format Details Source Examples
The Chwirut2
data frame has nr rows and nc columns giving
This data frame contains the following columns:
A numeric vector of ultrasonic response values.
A numeric vector of metal distance values.
These data are the result of a NIST study involving ultrasonic calibration. The response variable is ultrasonic response, and the predictor variable is metal distance.
Chwirut, D., NIST (197?). Ultrasonic Reference Block Study.
1 2 3 4 5 6 7 8 9 10 11 12 13 14  Try < function(expr) if (!inherits(val < try(expr), "tryerror")) val
plot(y ~ x, data = Chwirut2)
Try(fm1 < nls(y ~ exp(b1*x)/(b2+b3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.1 , b2 = 0.01, b3 = 0.02)))
Try(fm1a < nls(y ~ exp(b1*x)/(b2+b3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.1 , b2 = 0.01, b3 = 0.02), alg = "port"))
Try(fm2 < nls(y ~ exp(b1*x)/(b2+b3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.15 , b2 = 0.008, b3 = 0.01)))
Try(fm2a < nls(y ~ exp(b1*x)/(b2+b3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.15 , b2 = 0.008, b3 = 0.01), alg = "port"))
Try(fm3 < nls(y ~ exp(b1*x)/(1+p3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.1, p3 = 2.), alg = "plinear"))
Try(fm4 < nls(y ~ exp(b1*x)/(1+p3*x), data = Chwirut2, trace = TRUE,
start = c(b1 = 0.15, p3 = 0.01/0.008), alg = "plinear"))

Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.