[R] how to make a contour plot in R?

[antonio rodriguez]

Arnau Mir Torres wrote:
> Uwe Ligges wrote:
> 
> 
>>Arnau Mir Torres wrote:
>>
>> 
>>
>>
>>>Hello.
>>>
>>>I am an nxn data frame in the variable frame.
>>>I want to make a contour plot with it. That is, I want to plot a square 
>>>of dimensions [1,n]x[1,n] with the  gray level of square [i,i+1]x[j,j+1] 
>>>equal to frame[i,j].
>>>
>>>How can I make it?
>>>   
>>>
>>
>>
>>See ?image
>>
>>Uwe Ligges
>>
>>
>> 
>>
>>
>>>Thanks,
>>>
>>>Arnau.
>>>
>>>______________________________________________
>>>R-help at 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 at 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
>>
>> 
>>
> 
> The problem is image works with matrices but I am a data frame. So, the 
> question is: how can I transform a data frame in a matrix?

maybe,

as.matrix()
data.matrix()

Antonio

> 
> 
> Arnau.
> 
> ______________________________________________
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>