Changing radii line type in radial plots
On 2012-10-29 11:34, Bernie Wone wrote:
ok got it to work, but my original question was, is it possible to set the radii or axes one line type and the circles another type (please see attached)? Thanks!
That wasn't clear in your original request. But it's easy.
To provide arguments for setting the circle/radius line types
separately is essentially the same process that I've already
shown you. Modify the same two lines that I referenced in the
previous discussion:
1. Change
polygon(xpos, ypos, border = grid.col, col = grid.bg)
to
polygon(xpos, ypos, border = grid.col, col = grid.bg,
lty = gridcircle.lty)
and
segments(0, 0, xpos, ypos, col = grid.col)
to
segments(0, 0, xpos, ypos, col = grid.col,
lty = gridradius.lty)
Then add two arguments to the function's argument list:
gridradius.lty = 1, gridcircle.lty = 1
Modification that will permit different colours for the
circles/radii is left as an exercise.
Peter Ehlers
On Fri, Oct 26, 2012 at 10:59 AM, Peter Ehlers <ehlers at ucalgary.ca> wrote:
On 2012-10-25 14:42, Bernie Wone wrote:
Hi Peter, Thanks for the help. Being a beginner R user with little programming experience, once I source in "myradial.plot" in my R session, what do I use to plot. In other words, before I used radial.plot(), but now when I state myradial.plot(), it tells me that it can find the function. Thanks, Bern
You may be misunderstanding my suggestion. I'll assume that you are editing the file saved by capture.output(). Let's call it 'rp.txt'. After making the edits that I suggested, you will need to add myradial.plot <- at the front of the file. You save the resulting edited file, still named 'rp.txt'. Now use source() on that file to get the modified version of the radial.plot function into your R session. Peter Ehlers
On Wed, Oct 24, 2012 at 7:10 PM, Peter Ehlers <ehlers at ucalgary.ca> wrote:
On 2012-10-24 11:06, bwone wrote:
I am using the package plotrix radial.plot(). Yes, radial.plot() has a line type argument, lty, but that is for the polygons or the radial lines, not the radii or axes of the radial plot.....unless I am doing something wrong. Thanks!
First, even if you must post via Nabble, please do keep context.
Now, as to your question: I think I now understand; you want control
over the line type of the radial grid. You're correct; that's not
currently possible with radial.plot(), but it's easy to modify the
function and you can probably nudge Jim Lemon to make the change.
In the meantime, here's a fix you can apply yourself:
1. Save the function code (either get the source or just use
capture.output:
capture.output(radial.plot, file = "rp.txt")
2. Edit the function; find the following two lines:
polygon(xpos, ypos, border = grid.col, col = grid.bg)
segments(0, 0, xpos, ypos, col = grid.col)
and add the argument 'lty = grid.lty' to each.
Then add 'grid.lty = 1' to the function arguments.
Save the modified function as myradial.plot and source()
it into your R session and then use it with whatever
grid.lty setting you prefer.
Peter Ehlers
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