R help - Nov 2010 - creating vectors with three variables out of three datasets

Hi there,

i´ve got a problem with how to create a vector with three variables out of
three seperate ascii files.
These three ascii files contain pixel information of the same image but
different bands and i need a matrix of 
vectors, with each vector containing the corresponding pixel values for each
band. 

Up to now i´ve seperately read out the ascii files into three matrices but
don´t know how to put the corresponding pixel values together.

Looking forward to any help.
Thank you

Dominik


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DomDom wrote:
> Hi there,
> 
> i??ve got a problem with how to create a vector with three variables out of
> three seperate ascii files.
> These three ascii files contain pixel information of the same image but
> different bands and i need a matrix of 
> vectors, with each vector containing the corresponding pixel values for
each
> band. 
> 
> Up to now i??ve seperately read out the ascii files into three matrices but
> don??t know how to put the corresponding pixel values together.
Perhaps rbind or cbind, see ?rbind.

It would be useful if you gave us a small, reproducible example
of the type of data you have and what you want to do with it, please
see the Posting Guide.


> 
> Looking forward to any help.
> Thank you
> 
> Dominik
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

okay sorry.
i?ve got three ascii files with pixel values without any header information.

so if the first line of the three ascii files are:

ascii1: 11 12 13
ascii2: 14 15 16
ascii3: 17 18 19

i would like a new matrix with:
11,14,17;12,15,18;13,16,19;

thx


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View this message in context:
http://r.789695.n4.nabble.com/creating-vectors-with-three-variables-out-of-three-datasets-tp3027852p3027880.html
Sent from the R help mailing list archive at Nabble.com.

Is this what you want:
> x
       V1 V2 V3 V4
1 ascii1: 11 12 13
2 ascii2: 14 15 16
3 ascii3: 17 18 19
> z <- as.matrix(x[,-1])
> z
     V2 V3 V4
[1,] 11 12 13
[2,] 14 15 16
[3,] 17 18 19
> as.vector(z)
[1] 11 14 17 12 15 18 13 16 19
>

On Thu, Nov 4, 2010 at 6:05 PM, DomDom <realownage at msn.com>
wrote:
>
> okay sorry.
> i?ve got three ascii files with pixel values without any header
information.
>
> so if the first line of the three ascii files are:
>
> ascii1: 11 12 13
> ascii2: 14 15 16
> ascii3: 17 18 19
>
> i would like a new matrix with:
> 11,14,17;12,15,18;13,16,19;
>
> thx
>
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/creating-vectors-with-three-variables-out-of-three-datasets-tp3027852p3027880.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?