R help - Oct 2013 - kill colnames Matrix

Hello together, 

i have a little problem, maybe you can help me.
I have a matrix like this one:

                   [,1]          [,2]              [,3]           [,4]
[,5]        
MONTH         "2012-10"    "2012-11"    "2012-12" 
"2013-01"    "2013-02"
PT_SATZ "     0.00000" " 500.53621" "  65.71684"
"1080.58285" "1013.72028"

For a bar plot i need this matrix in the following formatting:

"2012-10"    "2012-11"    "2012-12"   
"2013-01"    "2013-02"
0.00000"    " 500.53621"  "  65.71684"
"1080.58285" "1013.72028"

the data comes from a data.frame like this one:

     MONTH    PT_SATZ
1  2012-10    0.00000
2  2012-11  500.53621
3  2012-12   65.71684
4  2013-01 1080.58285
5  2013-02 1013.72028
6  2013-03  939.63030
7  2013-04  977.17073
8  2013-05    0.00000
9  2013-06    0.00000
10 2013-07 1047.56938
11 2013-08  225.44031
12 2013-09  667.91489
13 2013-10    0.00000

i converted this data.frame with plotbase<-t(plotbase).

Maybe you can help me.

Thanks Mat



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Hi

First of all do not mix data frame and matrix, they have quite different
properties.

By transposing data frame you got character matrix and you cannot do barplot
with characters.
So you shall transpose only column PT_SATZ and add names from MONTHS but why not
to use your data frame directly?

dat<-data.frame(x=letters[1:5], y=1:5)
barplot(dat[,2], names.arg=dat[,1])

You could arrive to this answer quicker if you bother to look into documentation
to barplot so as did I.

Regards
Petr
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Mat
> Sent: Monday, October 07, 2013 9:58 AM
> To: r-help at r-project.org
> Subject: [R] kill colnames Matrix
> 
> Hello together,
> 
> i have a little problem, maybe you can help me.
> I have a matrix like this one:
> 
>                    [,1]          [,2]              [,3]           [,4]
> [,5]
> MONTH         "2012-10"    "2012-11"   
"2012-12"    "2013-01"
> "2013-02"
> PT_SATZ "     0.00000" " 500.53621" " 
65.71684" "1080.58285"
> "1013.72028"
> 
> For a bar plot i need this matrix in the following formatting:
> 
> "2012-10"    "2012-11"    "2012-12"   
"2013-01"    "2013-02"
> 0.00000"    " 500.53621"  "  65.71684"
"1080.58285" "1013.72028"
> 
> the data comes from a data.frame like this one:
> 
>      MONTH    PT_SATZ
> 1  2012-10    0.00000
> 2  2012-11  500.53621
> 3  2012-12   65.71684
> 4  2013-01 1080.58285
> 5  2013-02 1013.72028
> 6  2013-03  939.63030
> 7  2013-04  977.17073
> 8  2013-05    0.00000
> 9  2013-06    0.00000
> 10 2013-07 1047.56938
> 11 2013-08  225.44031
> 12 2013-09  667.91489
> 13 2013-10    0.00000
> 
> i converted this data.frame with plotbase<-t(plotbase).
> 
> Maybe you can help me.
> 
> Thanks Mat
> 
> 
> 
> --
> View this message in context: http://r.789695.n4.nabble.com/kill-
> colnames-Matrix-tp4677726.html
> Sent from the R help mailing list archive at Nabble.com.
> 
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