Displaying 3 results from an estimated 3 matches for "polygraph".
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polygram
2005 Apr 06
0
Polynomiographic function in R :-)
...starting my R learning, I decided
to try using it for computing some (any!) polynomiograph. I was
surprised about how easy and quick it was to get some results. Then I
thought it was interesting to extend the drawing to any function, and
not necessarily polynomials, yielding the function below:
polygraph <- function(expression, xrange=c(-1, 1), yrange=c(-1, 1),
points=200, steps=20, display=image)
{
expression <- substitute(expression)
variable <- all.vars(expression)
stopifnot(length(variable) == 1)
derivative <- D(expression, variable)
name &l...
2011 Jan 14
1
Question about scatterplot in package car
...ght!
Any help with how to do this would be greatly appreciated. Thanks in advance!
--
-dave----------------------------------------------------------------
"Pseudo-colored pictures of a person's brain lighting up are
undoubtedly more persuasive than a pattern of squiggles produced by a
polygraph. That could be a big problem if the goal is to get to the
truth." -Dr. Steven Hyman, Harvard
2011 Mar 22
1
Group labels in lattice barchart
...panel.barchart(x, y, ...)
panel.text(x, y-0.5, label=data$StimCount, cex=1)
}
--
-dave----------------------------------------------------------------
"Pseudo-colored pictures of a person's brain lighting up are
undoubtedly more persuasive than a pattern of squiggles produced by a
polygraph. That could be a big problem if the goal is to get to the
truth." -Dr. Steven Hyman, Harvard