[R] Passing colnames to graphics title
Hi, Just a quick query - if I'm creating a function to produce a number of histograms per page of output (one per column from a matrix), how can I pass the column name of the matrix into the title (or indeed to form part of the x-axis label)? TIA, Laura Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Laura Quinn wrote: Hi, Just a quick query - if I'm creating a function to produce a number of histograms per page of output (one per column from a matrix), how can I pass the column name of the matrix into the title (or indeed to form part of the x-axis label)? By extracting them using colnames()? Uwe Ligges TIA, Laura Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
a simple thing to do is: mat - matrix(...) # your matrix nams - dimnames(mat)[[2]] for(j in 1:ncol(mat)) hist(mat[,j], main=nams[j]) # or hist(mat[,j], xlab=paste(..., nams[j], ...)) I hope it helps. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/16/336899 Fax: +32/16/337015 Web: http://www.med.kuleuven.ac.be/biostat/ http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm - Original Message - From: Laura Quinn [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Sent: Wednesday, February 16, 2005 2:56 PM Subject: [R] Passing colnames to graphics title Hi, Just a quick query - if I'm creating a function to produce a number of histograms per page of output (one per column from a matrix), how can I pass the column name of the matrix into the title (or indeed to form part of the x-axis label)? TIA, Laura Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Wonderful, thank you very much! Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED] On Wed, 16 Feb 2005, Dimitris Rizopoulos wrote: a simple thing to do is: mat - matrix(...) # your matrix nams - dimnames(mat)[[2]] for(j in 1:ncol(mat)) hist(mat[,j], main=nams[j]) # or hist(mat[,j], xlab=paste(..., nams[j], ...)) I hope it helps. Best, Dimitris Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/16/336899 Fax: +32/16/337015 Web: http://www.med.kuleuven.ac.be/biostat/ http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm - Original Message - From: Laura Quinn [EMAIL PROTECTED] To: r-help@stat.math.ethz.ch Sent: Wednesday, February 16, 2005 2:56 PM Subject: [R] Passing colnames to graphics title Hi, Just a quick query - if I'm creating a function to produce a number of histograms per page of output (one per column from a matrix), how can I pass the column name of the matrix into the title (or indeed to form part of the x-axis label)? TIA, Laura Laura Quinn Institute of Atmospheric Science School of Earth and Environment University of Leeds Leeds LS2 9JT tel: +44 113 343 1596 fax: +44 113 343 6716 mail: [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Laura Quinn wrote:
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
Example (which you should have provided):
# Generate an example-matrix:
X - matrix(1:9, 3)
colnames(X) - letters[1:3]
# now try to get histograms of columns using a loop:
par(mfrow = c(3, 1))
cnames - colnames(X)
for(i in 1:ncol(X)){
hist(X[,i], main = paste(Site:, cnames[i], sep=))
}
Uwe Ligges
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Uwe Ligges wrote:
Laura Quinn wrote:
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
BTW: colnames(i) is the same as colnames(1) in the first iteration of
your loop. What do you expect colnames(1) to be?
Uwe Ligges
Example (which you should have provided):
# Generate an example-matrix:
X - matrix(1:9, 3)
colnames(X) - letters[1:3]
# now try to get histograms of columns using a loop:
par(mfrow = c(3, 1))
cnames - colnames(X)
for(i in 1:ncol(X)){
hist(X[,i], main = paste(Site:, cnames[i], sep=))
}
Uwe Ligges
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form
part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Laura Quinn wrote:
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura,
You should (re)read ?colnames. It takes a matrix as it's argument, not
an integer as you have supplied.
I think you want:
for(i in 1:20){
main=paste(Site:,colnames(mat)[i],sep=)
}
--sundar
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
On Wed, Feb 16, 2005 at 02:46:51PM +, Laura Quinn wrote:
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
^^^
it looks to me that this should be something like
colnames(foo)[i]
where foo is the matrix or data.frame you use.
Best regards, Jan
--
+- Jan T. Kim ---+
|*NEW*email: [EMAIL PROTECTED] |
|*NEW*WWW: http://www.cmp.uea.ac.uk/people/jtk |
*-= hierarchical systems are for files, not for humans =-*
__
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
RE: [R] Passing colnames to graphics title
If i is 1:20, there are no column names. Make sure you are indexing the
names from your your dataframe.
xx - data.frame(a=c(1:10), b = letters[1:10])
colnames(xx)
[1] a b
for(i in 1:2) print(colnames(xx)[i])
[1] a
[1] b
for(i in colnames(xx)) print(i)
[1] a
[1] b
Matt Austin
Statistician
Amgen
One Amgen Center Drive
M/S 24-2-C
Thousand Oaks CA 93021
(805) 447 - 7431
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Laura Quinn
Sent: Wednesday, February 16, 2005 6:47 AM
To: Uwe Ligges
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Passing colnames to graphics title
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to
produce a number of
histograms per page of output (one per column from a
matrix), how can I
pass the column name of the matrix into the title (or
indeed to form part
of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
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RE: [R] Passing colnames to graphics title
Dear Laura,
It doesn't make sense to call colnames() with the loop index; you could do
something like (for the matrix or data frame X):
par(mfrow=c(1, ncol(X)))
names - colnames(X)
for (i in seq(along=names)) hist(X[,i], main=, xlab=paste(Site:,
names[i]))
I hope this helps,
John
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario
Canada L8S 4M4
905-525-9140x23604
http://socserv.mcmaster.ca/jfox
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Laura Quinn
Sent: Wednesday, February 16, 2005 9:47 AM
To: Uwe Ligges
Cc: r-help@stat.math.ethz.ch
Subject: Re: [R] Passing colnames to graphics title
Obviously I have been trying to use the colnames() function!
However, when I try to subscript ie:
for(i in 1:20){
main=paste(Site:,colnames(i),sep=)
}
this doesn't work! I thought that as.character(colnames(i)) or
substitute(colnames(i)) might work, but to no avail...
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
On Wed, 16 Feb 2005, Uwe Ligges wrote:
Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to
produce a number
of histograms per page of output (one per column from a
matrix), how
can I pass the column name of the matrix into the title
(or indeed
to form part of the x-axis label)?
By extracting them using colnames()?
Uwe Ligges
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] Passing colnames to graphics title
Either set the 'main' or 'xlab' in the hist(). See help(par) for more
information on graphical arguments or help(hist).
mat - matrix( rnorm(1000), nc=5 )
colnames(mat) - LETTERS[1:ncol(mat)]
for( i in 1:ncol(mat) ){
hist( mat[ ,i],
main=paste( Histogram of data from column ,
colnames(mat)[i] ), xlab= )
}
On Wed, 2005-02-16 at 13:56 +, Laura Quinn wrote:
Hi,
Just a quick query - if I'm creating a function to produce a number of
histograms per page of output (one per column from a matrix), how can I
pass the column name of the matrix into the title (or indeed to form part
of the x-axis label)?
TIA,
Laura
Laura Quinn
Institute of Atmospheric Science
School of Earth and Environment
University of Leeds
Leeds
LS2 9JT
tel: +44 113 343 1596
fax: +44 113 343 6716
mail: [EMAIL PROTECTED]
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
