Help about R

Philippe a ??crit :

... how can I draw a three dimensional graphic of the 
plant's sound level ?

Not an answer, but I find image() very useful
to visualize 3D data simply on a 2D colored image.
hih

Le 25.08.2005 15:54, Philippe a ??crit :

Hello,
My name is Philippe Favrot, I'm a french occupational doctor (working in 
Luxembourg), and I'm an "R beginner".
I would be happy you could help me about the utilization of "R".
Recently, I measured sound levels in a plant. Before the measuring, I 
divided the plant in 3 virtual rows and 8 virtual columns. I measured 
the sound level at each intersection of rows and columns and obtained a 
set of 24 "sound level" values.
I wrote the results in a excel's spreadsheet.
My question is: I know to do import from excel into "R" (with 
read.table()), but how can I draw a three dimensional graphic of the 
plant's sound level ? Can I overlay a map of this factory (as a 
rectangle with a grid representing each spots where I measured )?
I'd understand if you are too busy to reply to my mail.
Thanks.
Best regards
Philippe Favrot
 

Bonjour Philippe,

Have you tried :
** RSiteSearch('3D')
** RSiteSearch('map')
** http://addictedtor.free.fr/graphiques/search.php?q=3D
** http://addictedtor.free.fr/graphiques/search.php?q=map
** http://www.stat.auckland.ac.nz/~paul/RGraphics/rgraphics.html about a 
great book on R graphics (I can't wait to have my copy, just ordered one 
by amazon)

Also, have a look at the package rgl on cran, that's terrific !!

Cheers,

Romain

visit the R Graph Gallery : http://addictedtor.free.fr/graphiques
~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~
~~~~~~      Romain FRANCOIS - http://addictedtor.free.fr         ~~~~~~
~~~~        Etudiant  ISUP - CS3 - Industrie et Services           ~~~~
~~                http://www.isup.cicrp.jussieu.fr/                  ~~
~~~~           Stagiaire INRIA Futurs - Equipe SELECT              ~~~~
~~~~~~   http://www.inria.fr/recherche/equipes/select.fr.html    ~~~~~~
~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~

Also, for the three dimensional graphic,
    help.search("3d")
will lead to a reference to the cloud() function in the lattice package.

I don't remember if the lattice package is installed by default. If 
not, you will have to install it.
(If you're using a Mac or Windows computer, there's a menu item for 
installing packages. Otherwise you have to use the install.packages() 
function.)

Then

    require(lattice)
   ?cloud

to first load the lattice package, and then view the online 
documentation for the cloud() function.

You can view one of the cloud() examples like this:

    require(datasets)
    cloud(Sepal.Length ~ Petal.Length * Petal.Width | Species, data = iris,
            screen = list(x = -90, y = 70), distance = .4, zoom = .6)

You could consider a bubble plot. There are two packages with 
functions for bubble plots, gstat and sp.
(Neither of them is installed by default.) I suspect the one in gstat 
will be easier to use, at least for someone new to R.

After having installed either of these packages, say gstat, then

   ?bubble

to get its documentation.

Overlaying a grid on the plot created by cloud() might be difficult 
for an R beginner.

Here's a simple example:

bubble(data.frame(x=1:5,y=1:5,z=1:5))

-Don

Hello,
My name is Philippe Favrot, I'm a french occupational doctor (working in
Luxembourg), and I'm an "R beginner".
I would be happy you could help me about the utilization of "R".
Recently, I measured sound levels in a plant. Before the measuring, I
divided the plant in 3 virtual rows and 8 virtual columns. I measured
the sound level at each intersection of rows and columns and obtained a
set of 24 "sound level" values.
I wrote the results in a excel's spreadsheet.
My question is: I know to do import from excel into "R" (with
read.table()), but how can I draw a three dimensional graphic of the
plant's sound level ? Can I overlay a map of this factory (as a
rectangle with a grid representing each spots where I measured )?
I'd understand if you are too busy to reply to my mail.
Thanks.
Best regards
Philippe Favrot

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--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA

"Don" == Don MacQueen <macq at llnl.gov>
    on Thu, 25 Aug 2005 08:11:42 -0700 writes:

Don> Also, for the three dimensional graphic,
    Don> help.search("3d")
    Don> will lead to a reference to the cloud() function in the lattice package.

    Don> I don't remember if the lattice package is installed by default. 

it is, since it's recommended.
In such a situation (as in quite a few others), please consider
using

  > packageDescription("lattice")

  Package: lattice
  Version: 0.12-5
  Date: 2005/08/16
  Priority: recommended <<<<<<<<<<<
  ^^^^^^^^^^^^^^^^^^^^^^
  Title: Lattice Graphics
  Author: Deepayan Sarkar <deepayan.sarkar at r-project.org>
  ........................
  ........................

where I've added the <<<<<<<< and ^^^^ markup.

    Don> If not, you will have to install it.