On Aug 24, 2010, at 2:56 PM, Michel Lutz wrote:
Hello,
As recommended by N. Gunther, I'm writing you because I have some
difficulties to create a script to track computer performance, as
done in
Holtman, 2005 (Visualization techniques for analysing patterns in
system
performance).
I would like to do a leveplot, with the kind of file here enclosed.
Nope. You probably did not read all the way to the end of the Posting
Guide to see what kinds of attachments are allowed on this list.
I assume I should create a matrix in R, then use the function 'image'.
Maybe. There is an image function for base graphics:
?image
First example is very similar to the first example in levelplot. They
have very similar data layout requirements.
As I am not familiar with the lattice package, I have some
difficulties to
move ahead : I think my pb is in the creation of the matrix. I am
not able
to create sthing consistent with the image function. I am even
thinking I
should build my input csv file differently, but I am not sure how to
do...
Is someone able to help me ?
Given Jim's propensity to finish his emails with "What problem are you
trying to solve", let me beat him to the punch. What's you data layout
look like and what do you want the plot to look like? If you can
convert that file to plain text and make sure its file extension
is .txt, it will probably make it through if you resend it.
You can get some other ideas for specifics by running the first
example on the levelplot help page:
?levelplot
Lattice graphic do not mix well with base graphics so you need to keep
them segregated in your plotting kitchen if you want to remain r-kosher.
--
David.
Thank you very much !
REgards,
Michel
---------- Forwarded message ----------
From: Red Roo <redr...@yahoo.com>
Date: Tue, Aug 24, 2010 at 3:46 PM
Subject: Re: [R-sig-hpc] Holtman's levelplot ?
To: Michel Lutz <micl...@gmail.com>
Cc: "r-sig-...@r-project.org" <r-sig-...@r-project.org>, redr...@yahoo.com
Michel,
If you ask your plotting questions over at r-help@r-project.org, Jim
Holtman
will probably address them directly. He is also an instructor for my
"Guerrilla
Data Analysis Techniques" class
http://www.perfdynamics.com/Classes/Outlines/gdata.html and we just
discussed
this plot 2 weeks ago.
--Neil Gunther
Taking The Pith Out Of Performance http://perfdynamics.blogspot.com/
Follow me on Twitter http://twitter.com/DrQz
Performance Dynamics Company http://www.perfdynamics.com/
On 08/24/2010 03:47 AM, Michel Lutz wrote:
Hello to all,
I am sorry for disturbing you, but I really don't know where/who to
ask...
so if this distribution list is not dealing with my concern, please
excuse
me...
Here is my concern : I am trying to do a levelplot as in Holtman,
2005
(Visualization techniques for analysing patterns in system
performance
data), to display CPU usage according to the day of the month (y)
and
minutes (x).
I am familiar with R basic features, but not at all with lattice
package
and
I don't understand the logic of this leveplot function,
especially in the
particular case of a time series.
I've read all the material found in the web, but I am completely
stuck...
Does someone have some clues or documentation that could help me
to draw
such a plot ? (which is nothing new : the plot I'm dreaming of is
the
Holtman's levelplot !).
Thank you very much, and excuse-me if I'm not addressing the right
distribution list.
Best regards,
Michel Lutz
France - PhD Student
David Winsemius, MD
West Hartford, CT
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