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# common-con-distrib.R, 6 Aug 16
# Data from:
# Example from:
# Evidence-based Software Engineering: based on the publicly available data
# Derek M. Jones
# TAG example
plot_layout(4, 1)
par(mar=c(1.2, 2.0, 1, 0.8))
plot(c(0, 1, 1, 4, 4, 5), c(0, 0, 0.25, 0.25, 0, 0), type="l",
bty="n", yaxt="n",
xlab="", ylab="")
x_exp=seq(0, 2, by=0.1)
plot(x_exp, dexp(x_exp, rate=1), type="l",
bty="n", yaxt="n",
xlim=range(x_exp), ylim=c(0, 4),
xlab="", ylab="")
lines(x_exp, dexp(x_exp, rate=2), col=brew_col[2])
lines(x_exp, dexp(x_exp, rate=4), col=brew_col[3])
legend(x="topright", legend=c("rate=1", "rate=2", "rate=4"), bty="n", fill=brew_col, cex=1.1)
sigma_str=function(num) as.expression(substitute(sigma == num))
x_norm=seq(-8, 8, by=0.1)
plot(x_norm, dnorm(x_norm, sd=1), type="l",
bty="n", yaxt="n",
xlim=range(x_norm), ylim=c(0, 0.4),
xlab="", ylab="")
lines(x_norm, dnorm(x_norm, sd=2), col=brew_col[2])
lines(x_norm, dnorm(x_norm, sd=4), col=brew_col[3])
legend(x="topright", legend=c(sigma_str(1), sigma_str(2), sigma_str(4)),
bty="n", fill=brew_col, cex=1.1)
x_beta=seq(0, 1, by=0.01)
plot(x_beta, dbeta(x_beta, shape1=0.5, shape2=0.5), type="l",
bty="n", yaxt="n",
xlim=range(x_beta), ylim=c(0, 2.5),
xlab="", ylab="")
lines(x_beta, dbeta(x_beta, shape1=2, shape2=2), col=brew_col[2])
lines(x_beta, dbeta(x_beta, shape1=2, shape2=5), col=brew_col[3])
legend(x="topright", legend=c("shape1=0.5\nshape2=0.5\n", "shape1=2\nshape2=2\n", "shape1=2\nshape2=5"), bty="n", fill=brew_col, cex=1.1)