Last change
on this file was
495,
checked in by pinsard, 10 years ago
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fix thanks to coding rules; typo; dupe empty lines; trailing blanks
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-
Property svn:keywords set to
Id
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File size:
1.2 KB
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Rev | Line | |
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[133] | 1 | ;+ |
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[237] | 2 | ; @file_comments |
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[163] | 3 | ; Send back a vector or a matrix constituted of 0 and 1 in alternation |
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[133] | 4 | ; |
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[237] | 5 | ; @categories |
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[318] | 6 | ; Matrix |
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[133] | 7 | ; |
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[373] | 8 | ; @param n1 {in}{required} {type=integer} |
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[237] | 9 | ; number of elements in the first dimension |
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[133] | 10 | ; |
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[373] | 11 | ; @param n2 {in} {type=integer} |
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[237] | 12 | ; number of elements in the second dimension |
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| 13 | ; |
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[373] | 14 | ; @examples |
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| 15 | ; |
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[495] | 16 | ; IDL> a=zero_one(3) |
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[373] | 17 | ; IDL> help,a |
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| 18 | ; A FLOAT = Array[3] |
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| 19 | ; IDL> print,a |
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| 20 | ; 0.00000 1.00000 0.00000 |
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| 21 | ; |
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[495] | 22 | ; IDL> a=zero_one(2,3) |
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[373] | 23 | ; IDL> help,a |
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| 24 | ; A FLOAT = Array[2, 3] |
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| 25 | ; IDL> print,a |
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| 26 | ; 0.00000 1.00000 |
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| 27 | ; 1.00000 0.00000 |
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| 28 | ; 0.00000 1.00000 |
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| 29 | ; |
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[237] | 30 | ; @returns |
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[373] | 31 | ; an array of n1 dimension or n1xn2 dimensions |
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[237] | 32 | ; |
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| 33 | ; @history |
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| 34 | ; Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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[133] | 35 | ; 1/12/98 |
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| 36 | ; |
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[237] | 37 | ; @version |
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| 38 | ; $Id$ |
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[133] | 39 | ; |
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| 40 | ;- |
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[237] | 41 | FUNCTION zero_one, n1,n2 |
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[133] | 42 | ; |
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| 43 | compile_opt idl2, strictarrsubs |
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| 44 | ; |
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| 45 | CASE N_PARAMS() OF |
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| 46 | 1:return, findgen(n1) mod 2 |
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[237] | 47 | 2:BEGIN |
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[133] | 48 | if fix(n1/2) EQ n1/2. then BEGIN ;even number of columns |
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| 49 | res = findgen(n1+1,n2) mod 2 |
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| 50 | return, res[0:n1-1, *] |
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| 51 | ENDIF ELSE return, findgen(n1,n2) mod 2 ;odd number of columns |
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| 52 | END |
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| 53 | else: return, report('bad number of arguments') |
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[237] | 54 | endcase |
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[133] | 55 | end |
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