Author: David Parkhurst <parkhurs@ariel.ucs.indiana.edu>
Date: Wed, 09 Mar 2005 11:24:12 -0500
I have a five-panel trellis plot, with layout=c(5,1), and I'd like it to print on a page in portrait orientation. On my screen, it comes up in landscape shape. I've looked at ?trellis.args, and don't
Author: David Parkhurst <parkhurs@ariel.ucs.indiana.edu>
Date: Fri, 25 Feb 2005 09:32:31 -0500
Why bother? Great question. I call them "badness of fit tests" because they can only either establish badness, or fail to establish badness. That is the nature of significance tests. And they don't p
Author: David Parkhurst <parkhurs@ariel.ucs.indiana.edu>
Date: Sun, 02 Jan 2005 20:45:35 -0500
If I have a glm with logit link and a single explanatory variable, is there an easy way in s-plus (or R) to obtain a plot of the logistic curve, with confidence bands for that curve? Thanks for any h
Author: David Parkhurst <parkhurs@ariel.ucs.indiana.edu>
Date: Thu, 09 Dec 2004 20:48:00 -0500
Is it possible to add text in italics to a plot using a simple text command, without all the GUI stuff that's in the programmer's manual? I'm using splus 6.2 in windows Thanks for any help. Dave Park
Author: David Parkhurst <parkhurs@ariel.ucs.indiana.edu>
Date: Fri, 10 Dec 2004 06:22:19 -0500
Thank you, Prof. Ripley. I was intending to copy my plots to ms Word for projection at a workshop. I'll experiment to see what happens. David Is it possible to add text in italics to a plot using a s
I'm lecturing on the normal approximation to the binomial, and want to overlay the two onto a single plot. I tried this: x <- 60:100 y <- dbinom(x,100,0.7) xy <-d ata.frame(x,y) plot(x,y) yy <- dnorm
Duh. A few minutes ago, I sent the wrong code, and what I sent does work. Thanks to those who told me so! What I WANT to do (using Professional Edition Version 6.2.1 for Microsoft Windows : 2003) is
I have the following data and barplot. I'd like to show the "Number of subjects" axis title in a 30-point font, but no matter what I try to do, I can't seem to accomplish that. I have successfully ch
You also want to be very careful, when transforming data to logs, that the logarithms make sense scientifically. In situations involving amounts of mass or energy, they often don't make sense. There
The following calls work fine (produce useable graphs) when entered outside the loop, but not when I include them in the for loop. (The graphs produced from within the loop are blank.) Why, and how c
The following calls work fine (produces useable graphs) when entered outside the loop, but not when I include them in the for loop. (The graphs produced from within the loop are blank.) Why, and how
I have a dotplot somewhat like example.dotplot() that comes with splus. (I?m using Professional Edition Version 6.1.2 Release 1 for Microsoft Windows : 2002.) I?d like to make the factor labels along
I have a dataframe consisting of three columns: an ordered factor named f.ord, a numeric variable x, and a second factor f2. When I ask for dotplot(f.ord ~ x | f2), the plots come out with the f.ord
When I execute print.default(myframe$f.ord) I obtain [the equivalent of] [1] 1 2 3 4 5 6 1 2 3 4 5 6 attr(, "levels"): [1] "x" "c" "y" "a" "u" "b" attr(, "class"): [1] "ordered" "factor" In my actual
I asked the question below, and thank those who answered. It turns out that I did have the f.ord values ordered correctly. However, the name I actually used for that column in my dataframe was "myfra
I created a mini-example with the same commands I used for my big dataset, and this time it works ok. I am bamboozled . If I continue to have trouble with the real dataset, I will send it to you to s