[R] Fwd: [R-sig-hpc] Holtman's levelplot ?

[Michel Lutz]

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.

I assume I should create a matrix in R, then use the function 'image'.

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 ?

Thank you very much !

REgards,

Michel



---------- Forwarded message ----------
From: Red Roo <redrooz at yahoo.com>
Date: Tue, Aug 24, 2010 at 3:46 PM
Subject: Re: [R-sig-hpc] Holtman's levelplot ?
To: Michel Lutz <miclutz at gmail.com>
Cc: "r-sig-hpc at r-project.org" <r-sig-hpc at r-project.org>, redrooz at yahoo.com


Michel,

If you ask your plotting questions over at r-help at 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
>>>
>>>
>>>       [[alternative HTML version deleted]]
>>>
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>>>
>>>R-sig-hpc at r-project.org
>>>
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>>>
>
>--
>Brian G. Peterson
>http://braverock.com/brian/
>Ph: 773-459-4973
>IM: bgpbraverock
>
>