Matrix construction


 
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# 1  
Old 11-23-2009
Matrix construction

Hi experts

How to construct a rectangular matrix for a text file with 6012 rows and 2221 columns.



Thank You
# 2  
Old 11-23-2009
Quote:
Originally Posted by riyabio
...
How to construct a rectangular matrix for a text file with 6012 rows and 2221 columns.
...
No sample input, no sample output, and no language preference stated. So I shall make a few assumptions -

(a) Your text file consists of numbers.
(b) The delimiter is a single space.

One way to do it with Perl:

Code:
$
$ cat f1
00 01 02 03
10 11 12 13
20 21 22 23
30 31 32 33
40 41 42 43
$
$ perl -ne 'chomp; push @arr, [split]' f1
$
$

After it is run, the perl script will have a 2-dimensional array @arr that has 5 elements (for 5 rows). Each element is itself a 4-element array (actually, a "reference" to an array). An individual "cell" could be accessed by the expression $arr[x][y], where x and y are array indexes starting with 0.

HTH,
tyler_durden
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