Last change
on this file since 173 was
163,
checked in by navarro, 18 years ago
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header improvements : type of parameters and keywords, default values, spell checking + idldoc assistant (IDL online_help)
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Property svn:eol-style set to
native
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Property svn:keywords set to
Id
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File size:
1.3 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 | ; |
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6 | ; @file_comments |
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7 | ; erase a variable |
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8 | ; same thing that delvar but usable in a program and usable |
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9 | ; for one variable simultaneously |
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10 | ; |
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11 | ; @categories |
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12 | ; Utilities |
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13 | ; |
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14 | ; @param VARNAME {in}{required} |
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15 | ; The name of the variable we want erase |
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16 | ; |
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17 | ; @examples |
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18 | ; IDL> a=1 |
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19 | ; IDL> undefine,a |
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20 | ; % Compiled module: UNDEFINE. |
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21 | ; IDL> help, a |
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22 | ; A UNDEFINED = <Undefined> |
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23 | ; |
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24 | ; @history trouve sur la page web de D.Fanning |
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25 | ; http://www.dfanning.com : |
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26 | ;QUESTION: How do I make an IDL variable have a type "undefined"? |
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27 | ;ANSWER: At the main IDL level you can use the IDL procedure DELVAR to |
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28 | ;delete an IDL variable and make it undefined. Inside of procedures |
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29 | ;and functions, I use this little program named UNDEFINE that I got |
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30 | ;from Andrew Cool at the DSTO High Frequency Radar Division in |
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31 | ;Adelaide, Australia. |
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32 | ; |
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33 | ; @version $Id$ |
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34 | ; |
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35 | ;- |
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36 | ;------------------------------------------------------------ |
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37 | ;------------------------------------------------------------ |
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38 | ;------------------------------------------------------------ |
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39 | PRO undefine, varname |
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40 | ; |
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41 | compile_opt idl2, strictarrsubs |
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42 | ; |
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43 | tempvar = SIZE(TEMPORARY(varname)) |
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44 | END |
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45 | |
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