building-a-matrix.rex

Pipelines v2.1

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 **** Top of file ****
 1
 2 /* The following pipeline reads the file: aldous.txt; and builds a set of matrices. Each
 3 matrix is 4 columns wide by 5 rows deep. The pipeline demonstrates the SNAKE stage
 4 which builds multicolumn, aligned output records. */
 5
 6 Address Rxpipe
 7
 8 'pipe < &installdrive:\&installpath\examples\input\aldous.txt',
 9 '| take 7', /* Select only the first 7 records. */
 10 '| split',  /* Split the records into individual words. */
 11 '| specs recno strip 1.2 1-* nw', /* Insert the record number. */
 12 '| snake 4 align / / 5 //', /* Build a set of matrices; each 4 columns.. */
 13 , /* ..wide by 5 rows deep. */
 14 '| cons' /* Display on the console. */
 15
 16 Say 'Hit Enter to close..'
 17 Parse Pull
 18
 19 Exit 0
 **** End of file ****
 

Console output

 
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 1 1 A 6 only 11 main 16 LONDON
 2 2 SQUAT 7 thirty-four 12 entrance 17 HATCHERY
 3 3 grey  8 stories. 13 the 18 AND
 4 4 building 9 Over 14 words, 19 CONDITIONING
 5 5 of 10 the 15 CENTRAL 20 CENTRE,
 6 
 7 21 and, 26 World 31 STABILITY. 36 on
 8 22 in  27 State's 32 37 the
 9 23 a 28 motto, 33 The 38 ground
 10 24 shield, 29 COMMUNITY, 34 enormous 39 floor
 11 25 the 30 IDENTITY, 35 room 40 faced
 12 
 13 41 towards  46 all 51 panes, 56 heat
 14 42 the 47 the 52 for 57 of
 15 43 north. 48 summer 53 all 58 the
 16 44 Cold 49 beyond 54 the 59 room
 17 45 for 50 the  55 tropical 60 itself,
 18 
 19 61 a 66 through 71 some 76 pallid
 20 62 harsh 67 the 72 draped 77 shape
 21 63 thin 68 windows, 73 lay
 22 64 light 69 hungrily 74 figure,
 23 65 glared 70 seeking 75 some
 24 Hit Enter to close..