[R] greek in main title

[Oldradio69@aol.com]

Hi -- your solution looses the ability to assign the values of theta and n[i]
in the simulation... you get thta and n_i in the titles.


In a message dated 7/22/2003 10:44:59 AM Eastern Standard Time, ahmlatif at yahoo.com writes:

> Hi,
> 
> change the name of function argument "theta" to
> something else say "thta" and then use the following
> .... 
> 
> heading <- expression(paste("Exp w/ ", theta, "=",
> thta, ", n  = ", n[i]))
> 
> Hope it will help...
> 
> Mahbub.
> 
> --- Oldradio69 at aol.com wrote:
> > Hello,
> > 
> > I have written a function that demonstrates the CLT
> > by
> > generating samples following the exponential
> > distribution,
> > calculating the means, plotting the histogram, and
> > drawing
> > the limiting normal curve as an overlay.  I have the
> > title
> > of each histogram state the sample size and rate
> > (1/theta)
> > for the exponential (the output is actually 4
> > histograms),
> > but I can't get the greek letter theta to appear in
> > the
> > heading.  Is this possible?  I can get nontext for
> > the xlab 
> > and ylab pretty easily.
> > 
> > Thanks, Jason
> > 
> > Below is my code.  Currently it just writes out
> > "theta."
> > 
> > function (theta) 
> > {
> >   layout(matrix(c(1:4),2,2,byrow=TRUE))
> >   par(bg = "cornsilk")
> >   n <- c(1,10,25,50)
> >   for(i in 1:4)  {
> >      xbar <- rep(0, 1000)
> >      for (j in 1:1000)
> >         xbar[j] <- mean(rexp(n[i], rate = 1/theta))
> >      heading <- paste("Exp w/ theta =", theta, ", n
> > = ", n[i])
> >      hist(xbar, prob = TRUE, breaks = "FD", main =
> > title(heading, font.main = 6), 
> >           col = "lightgray", xlab =
> > expression(bar(x)))
> >      xbar <- sort(xbar)
> >      points(xbar, dnorm(xbar, mean = theta, sd =
> > theta/sqrt(n[i])), 
> >         type = "l", col = 2)
> >     }
> > }
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> >
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> 
> 
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