adding labels to x,y points

Hi,
I am new to R.

I have a matrix that I have assigned to the object ?colon?.
colon<-read.table("c:\\alon.txt",header=T,row.names=1)
attach(colon)
names(colon)

The dimenstions are 2000   62.

Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000
different numbers (?continuous? values) within it.

I have also assigned a name for each of the 2000 rows of the dataframe with
a prefix (i.e. g1 ?. g2000) using the code (not sure if I did this right):
colon<-paste("g",c(1:nrow(colon)),sep="")
I have plotted the first 20 values from two of the columns(samples).
x<-c(norm1[1:20])
y<-c(norm2[1:20])
plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2 sample',main='Norm1
vs Norm2 - 20
genes')
points(x,y,pch=15,col='blue')
Now I wish to assign labels to each point (above each point (i.e. pos=3) in
the plot with ?g1 to g20 corresponding to each row but I am having trouble
with this step.

I have tried:
text(x,y, label = row.names(colon[1:20])) 
but nothing happens. 

Any suggestions?

Thanks in advance
MAB

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I don't have access to your "alon.txt" file (see ?dput for future posts),
but...

I'm pretty sure info you want isn't in row.names(colon[1:2])
it should just be 

text(x,y, label = colon[1:20]) 

??
HTH
Hi,
I am new to R.

I have a matrix that I have assigned to the object ?colon?.

colon<-read.table("c:\\alon.txt",header=T,row.names=1)
attach(colon)
names(colon)

The dimenstions are 2000   62.

Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000
different numbers (?continuous? values) within it.

I have also assigned a name for each of the 2000 rows of the dataframe
with a prefix (i.e. g1 ?. g2000) using the code (not sure if I did this
right):

colon<-paste("g",c(1:nrow(colon)),sep="")
I have plotted the first 20 values from two of the columns(samples).

x<-c(norm1[1:20])

y<-c(norm2[1:20])

plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2 sample',main='Norm1
vs Norm2 - 20
genes')

points(x,y,pch=15,col='blue')
Now I wish to assign labels to each point (above each point (i.e. pos=3)
in the plot with ?g1 to g20 corresponding to each row but I am having
trouble with this step.

I have tried:

text(x,y, label = row.names(colon[1:20])) 
but nothing happens. 

Any suggestions?

Thanks in advance
MAB

--
View this message in context: http://r.789695.n4.nabble.com/adding-labels-to-x-y-points-tp3828461p3828545.html
Sent from the R help mailing list archive at Nabble.com.
Actually, you appear to have re-assigned your object ?colon? (from
"c:\\alon.txt") with a character vector of intended row.names.

so use 

row.names(colon) <-paste("g",c(1:nrow(colon)),sep="")
I don't have access to your "alon.txt" file (see ?dput for future posts),
but...

I'm pretty sure the info you want is not in row.names(colon[1:2])

should just be using:

text(x,y, label = colon[1:20,])  

??

HTH

baumeist wrote:
Hi,
I am new to R.

I have a matrix that I have assigned to the object ?colon?.

colon<-read.table("c:\\alon.txt",header=T,row.names=1)
attach(colon)
names(colon)

The dimenstions are 2000   62.

Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000
different numbers (?continuous? values) within it.

I have also assigned a name for each of the 2000 rows of the dataframe
with a prefix (i.e. g1 ?. g2000) using the code (not sure if I did this
right):

colon<-paste("g",c(1:nrow(colon)),sep="")
I have plotted the first 20 values from two of the columns(samples).

x<-c(norm1[1:20])

y<-c(norm2[1:20])

plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2
sample',main='Norm1 vs Norm2 - 20
genes')

points(x,y,pch=15,col='blue')
Now I wish to assign labels to each point (above each point (i.e. pos=3)
in the plot with ?g1 to g20 corresponding to each row but I am having
trouble with this step.

I have tried:

text(x,y, label = row.names(colon[1:20])) 
but nothing happens. 

Any suggestions?

Thanks in advance
MAB

--
View this message in context: http://r.789695.n4.nabble.com/adding-labels-to-x-y-points-tp3828461p3828665.html
Sent from the R help mailing list archive at Nabble.com.
A sample data would help. But you could modify as

text(x,y, label = row.names(colon[1:20,]))

HTH

Weidong Gu
Hi,
I am new to R.

I have a matrix that I have assigned to the object ?colon?.

colon<-read.table("c:\\alon.txt",header=T,row.names=1)
attach(colon)
names(colon)

The dimenstions are 2000 ? 62.

Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000
different numbers (?continuous? values) within it.

I have also assigned a name for each of the 2000 rows of the dataframe with
a prefix (i.e. g1 ?. g2000) using the code (not sure if I did this right):

colon<-paste("g",c(1:nrow(colon)),sep="")
I have plotted the first 20 values from two of the columns(samples).

x<-c(norm1[1:20])

y<-c(norm2[1:20])

plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2 sample',main='Norm1
vs Norm2 - 20
genes')

points(x,y,pch=15,col='blue')
Now I wish to assign labels to each point (above each point (i.e. pos=3) in
the plot with ?g1 to g20 corresponding to each row but I am having trouble
with this step.

I have tried:

text(x,y, label = row.names(colon[1:20]))
but nothing happens.

Any suggestions?

Thanks in advance
MAB

--
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Sent from the R help mailing list archive at Nabble.com.

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and provide commented, minimal, self-contained, reproducible code.

#This should work (again, without your data ??)

colon<-read.table("c:\\alon.txt",header=T,row.names=1) 

row.names(colon) <-paste("g",c(1:nrow(colon)),sep="")   

with(colon[1:20,], plot(norm1, norm2, type='n',xlab='x norm1 sample',ylab='y
norm2 sample',main='Norm1 vs Norm2 - 20 genes'))

with(colon, text(norm1, norm2, label = row.names(colon[1:20,]))
Hi,
I am new to R.

I have a matrix that I have assigned to the object ?colon?.

colon<-read.table("c:\\alon.txt",header=T,row.names=1)
attach(colon)
names(colon)

The dimenstions are 2000   62.

Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000
different numbers (?continuous? values) within it.

I have also assigned a name for each of the 2000 rows of the dataframe
with a prefix (i.e. g1 ?. g2000) using the code (not sure if I did this
right):

colon<-paste("g",c(1:nrow(colon)),sep="")
I have plotted the first 20 values from two of the columns(samples).

x<-c(norm1[1:20])

y<-c(norm2[1:20])

plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2 sample',main='Norm1
vs Norm2 - 20
genes')

points(x,y,pch=15,col='blue')
Now I wish to assign labels to each point (above each point (i.e. pos=3)
in the plot with ?g1 to g20 corresponding to each row but I am having
trouble with this step.

I have tried:

text(x,y, label = row.names(colon[1:20])) 
but nothing happens. 

Any suggestions?

Thanks in advance
MAB

--
View this message in context: http://r.789695.n4.nabble.com/adding-labels-to-x-y-points-tp3828461p3830363.html
Sent from the R help mailing list archive at Nabble.com.