grain.us {VGAM} | R Documentation |
Grain Prices Data in USA
Description
A 4-column matrix.
Usage
data(grain.us)
Format
The columns are:
- wheat.flour
numeric
- corn
numeric
- wheat
numeric
- rye
numeric
Details
Monthly averages of grain prices in the United States for wheat flour, corn, wheat, and rye for the period January 1961 through October 1972. The units are US dollars per 100 pound sack for wheat flour, and per bushel for corn, wheat and rye.
Source
Ahn and Reinsel (1988).
References
Ahn, S. K and Reinsel, G. C. (1988). Nested reduced-rank autoregressive models for multiple time series. Journal of the American Statistical Association, 83, 849–856.
Examples
## Not run:
cgrain <- scale(grain.us, scale = FALSE) # Center the time series only
fit <- vglm(cgrain ~ 1, rrar(Rank = c(4, 1)),
epsilon = 1e-3, stepsize = 0.5, trace = TRUE, maxit = 50)
summary(fit)
## End(Not run)
[Package VGAM version 1.1-11 Index]