On Apr 8, 2010, at 3:13 PM, array chip wrote:
David,
That does the job! Thanks a lot.
Now I am very very close to what I want. Still have a couple of
small adjustments to make.
1. I use drape=TRUE to draw grid and color on the surface, is there
a parameter to adjust the density of the grid?
If you mean the spacing between points, then isn't that determined by
the density of the gridded data arguments before they get to the
wireframe function?
2. Is there a way that I can add grid to the axis surface? I mean
the sides of the box, between x & y, between x & z, and between y &
z? And I need to choose which 3 side of the box that I want to add
grid?
See Figure 13.7 of Sarkar's Lattice text for an example of a panel
function that collapses the contourLines of the volcano dataset at the
top bounding surface by using ltransform3dto3d with a z argument of
zlim.scaled[2]. I would think that a grid could be 3dto3d transformed
similarly.
--
David.
Thank you all for the help. It's fun to play with wireframe
John
--- On Wed, 4/7/10, David Winsemius <dwinsem...@comcast.net> wrote:
From: David Winsemius <dwinsem...@comcast.net>
Subject: Re: [R] 3-D response surface using wireframe()
To: "array chip" <arrayprof...@yahoo.com>
Cc: r-help@r-project.org
Date: Wednesday, April 7, 2010, 9:22 PM
On Apr 7, 2010, at 8:58 PM, array chip wrote:
With the help document, i finally find a set of values
of for x=,y=
and z= in "screen" argument that gives me the correct
rotation of
the plot. But now it plots x and y axis (tick marks
and labels)
along the top of the plot. Is there one way to plot x
and y axis on
the bottom of the plot?
Look at the scpos argument to specify the scales location.
(Still
lacking an example and therrefore doing this from memory.)
--
David
Thanks
John
--- On Wed, 4/7/10, David Winsemius <dwinsem...@comcast.net>
wrote:
From: David Winsemius <dwinsem...@comcast.net>
Subject: Re: [R] 3-D response surface using
wireframe()
To: "array chip" <arrayprof...@yahoo.com>
Cc: r-help@r-project.org
Date: Wednesday, April 7, 2010, 8:07 AM
A search with the following
strategy:
RSiteSearch("lattice wireframe rotate axes")
Followed by adding requests to search earlier
years'
archives produced this link which has a further
link to a
document that answers most of your questions, at
least the
ones that are comprehensible:
http://tolstoy.newcastle.edu.au/R/e2/help/07/03/12534.html
--David.
On Apr 6, 2010, at 7:12 PM, array chip wrote:
I am working on plotting a response surface
using
wireframe(). The default style/orientation is
z
|
|
y |
\ |
\ |
\ |
\ |
\ |
\ |
\ |
\|________________x
0
Now what I want the orientation of axes is:
z
|
|
|
|
|
/0\
/ \
/ \
/ \
/
\
/
\
y
z
Two z axes? How interesting!
My understanding is that the
screen=list(z=,y=,x=)
control the orientation of axes, but even after
reading the
help page of screen argument, I still don't
understand how
to use it.
screen: "A list determining the sequence of
rotations
to be applied to the data before being plotted.
The initial
position starts with the viewing point along the
positive
z-axis, and the x and y axes in the usual
position. Each
component of the list should be named one of "x",
"y" or "z"
(repititions are allowed), with their values
indicating the
amount of rotation about that axis in degrees."
Can anyone explain to me how the screen
argument
works? And what values (x,y,z) I should choose for
the
orientation that I want?
Another question is wireframe(0 will draw all
8 edges
of the cubic by default, is there anyway that I
can control
what edges I can draw, what I can hide?
thanks very much!
John
______________________________________________
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David Winsemius, MD
West Hartford, CT
David Winsemius, MD
West Hartford, CT
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
