Last change
on this file since 134 was
134,
checked in by navarro, 18 years ago
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change *.pro file properties (del eof-style, del executable, set keywords Id
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-
Property svn:keywords set to
Id
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File size:
1.2 KB
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1 | ;------------------------------------------------------------ |
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2 | ;------------------------------------------------------------ |
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3 | ;------------------------------------------------------------ |
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4 | ;+ |
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5 | ; @file_comments |
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6 | ; Send back a vector or a matrix constituate of 0 and 1 in alternation |
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7 | ; |
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8 | ; @categories function, matrixes |
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9 | ; |
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10 | ; @param n1 {in}{required} number of elements in the first dimension |
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11 | ; @param n2 {in}{required} numbre of elements in the second dimension |
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12 | ; |
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13 | ; @returns resultat |
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14 | ; |
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15 | ; @history Sebastien Masson (smasson@lodyc.jussieu.fr) |
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16 | ; 1/12/98 |
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17 | ; |
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18 | ; @version $Id$ |
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19 | ; |
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20 | ;- |
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21 | ;------------------------------------------------------------ |
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22 | ;------------------------------------------------------------ |
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23 | ;------------------------------------------------------------ |
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24 | function zero_one, n1,n2 |
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25 | ; |
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26 | compile_opt idl2, strictarrsubs |
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27 | ; |
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28 | CASE N_PARAMS() OF |
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29 | 1:return, findgen(n1) mod 2 |
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30 | 2:BEGIN |
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31 | if fix(n1/2) EQ n1/2. then BEGIN ;even number of columns |
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32 | res = findgen(n1+1,n2) mod 2 |
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33 | return, res[0:n1-1, *] |
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34 | ENDIF ELSE return, findgen(n1,n2) mod 2 ;odd number of columns |
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35 | END |
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36 | else: return, report('bad number of arguments') |
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37 | endcase |
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38 | end |
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