[R] Converting matrices into row vectors and saving as ASCII text

[Xi Ang]

Thanks for your reply.

Is there a way I can save the data to an ascii file without losing the
row/column structure?
I have tried save(...) and write.table(...) but the output file seems to
jumble up the order of the matrix.

Thanks
Xi


David Winsemius wrote:
> 
> XYT <- array(1:150, dim=c(3,5,10))
> XYbyT= matrix(apply(XYT, 3, I), ncol=10)
> 
> ...or even...
> 
> XYbyT= matrix(XYT, ncol=10)
> 
> --  
> David.
> 
> On Sep 19, 2009, at 1:11 PM, Xi Ang wrote:
> 
>>
>> Hi
>>
>> I have some data with these dimensions:
>> 5 3 100
>>
>> which correspond to the x, y, and time dimensions, for a variable, p.
>>
>> I need the data in this format: 100 rows (1 row per time unit), and 15
>> values in each row.
>>
>> I have attempted to reshape my data
>>
>>> dim(data)
>> 5 3 100
>>
>>> attr(data,'dim')<-c(dim(data)[3],dim(data)[1]*dimdata[2])
>>
>> So I get data with 100 rows, 15 columns.
>>
>> I need to use this data outside of R, and so have to save it as an  
>> ASCII
>> file that retains the row-column structure of the data, but I do not  
>> know
>> how to.
>>
>> It would be ideal if I could end up with a text file that also has an
>> additional column that labels which time unit (1-100) the row  
>> belongs to,
>> i.e.
>>
>> 1   a1,1  a1,2 ........... a1,15
>> 2   a2,1  a2,2 ........... a2,15
>> 3   a3,1  a3,2 ........... a3,15
>> 4   a4,1  a4,2 ........... a4,15
>> .
>> .
>> .
>> 99
>> 100
>>
>> Any suggestions would be appreciated.
>>
>> Thanks
>> Xi
>>
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/Converting-matrices-into-row-vectors-and-saving-as-ASCII-text-tp25523562p25523562.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.
> 
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
> 
> ______________________________________________
> 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.
> 
> 

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