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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.
Stéphane
, self-contained, reproducible code.
Stéphane Adamowicz
Chercheur / Scientist
stephane.adamow...@paca.inra.fr
Centre PACA - UR 1115 PSH
Tel. : +33 1 (0)4 32 72 24 35
Fax : +33 1 (0)4 32 72 24 32
228, route de l'Aérodrome
84 914 Avignon Cedex 9
France
www.inra.fr
Many thanks,
Stéphane
Le 30 mars 2015 à 10:42, peter dalgaard pda...@gmail.com a écrit :
On 30 Mar 2015, at 09:59 , Stéphane Adamowicz
stephane.adamow...@avignon.inra.fr wrote:
However, in order to help me understand, would you be so kind as to give me
a matrix or data.frame example
Le 27 mars 2015 � 18:01, David Winsemius dwinsem...@comcast.net a �crit :
On Mar 27, 2015, at 3:41 AM, St�phane Adamowicz wrote:
Well, it seems to work with me.
No one is doubting that it worked for you in this instance. What Peter D. was
criticizing was the construction :
Well, it seems to work with me.
Y - as.matrix(airquality)
head(Y, n=8)
Ozone Solar.R Wind Temp Month Day
[1,]41 190 7.4 67 5 1
[2,]36 118 8.0 72 5 2
[3,]12 149 12.6 74 5 3
[4,]18 313 11.5 62 5 4
[5,]NA NA 14.3 56
Why not use complete.cases() ?
data_no_NA - data[, complete.cases(t(data))==T]
Le 27 mars 2015 à 06:13, Jatin Kala jatin.kala...@gmail.com a écrit :
Hi,
I've got a rather large matrix of about 800 rows and 60 columns.
Each column is a time-series 800 long.
Out of these 60 time
Le 27 mars 2015 à 12:34, PIKAL Petr petr.pi...@precheza.cz a écrit :
Very, very, very bad solution.
as.matrix can change silently your data to unwanted format,
complete.cases()==T is silly as Peter already pointed out.
Perhaps, but it happens that in the original message, the
example. Furthermore in my example no unwanted format occurred. You can
Yes because data.frame was (luckily) numeric.
Luck has nothing to do with this. I Chose this example on purpose …
Stéphane
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There is a function keep() in package gdata for this purpose
Le 19 févr. 2015 à 10:25, philippe massicotte pmassico...@hotmail.com a écrit
:
Dear R users.
I would like to remove all object from my workspace except the function I
have defined. However, is I use rm(list = ls()) everything
Le 4 d�c. 2014 � 13:40, Tal Galili a �crit :
By accident I came across the following example:
x - 1:3
y - 1:3
line(x, y) # returns:
Call:
line(x, x)
Coefficients:
[1] -2 2
While when using 1:4, it will give the more reasonable 0,1 coefficients.
I imagine this is in the
packages that propose randomization (or bootstrap) methods ?
Cheers, Stéphane
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Stéphane Adamowicz
stephane.adamow...@avignon.inra.fr
___
UR 1115 Plantes et Systèmes de Culture Horticoles (PSH
Recently, I came across a strange and potentially troublesome behaviour of the
lm and aov functions that ask questions about calculation accuracy. Let us
consider the 2 following datasets dat1 dat2 :
(dat1 - data.frame(Y=c(1:3, 10+1:3), F=c(rep(A,3), rep(B,3
Y F
1 1 A
2 2 A
3 3 A
4
major ticks
obtained with the above command. The minor.tick function in library Hmisc
gives an error when applied to log axes.
Any solution ?
Stéphane
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Stéphane Adamowicz
INRA, unité PSH
domaine St Paul, site agroparc
84914 Avignon, cedex 9
France
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