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Last change
on this file since 375 was
375,
checked in by pinsard, 16 years ago
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improvements of headers (paragraphs and alignments)
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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:
997 bytes
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| 1 | ;+ |
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| 2 | ; |
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| 3 | ; @file_comments |
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| 4 | ; erase a variable |
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| 5 | ; |
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| 6 | ; same thing like <proidl>DELVAR</proidl> but usable in a program and usable |
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| 7 | ; for one variable simultaneously |
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| 8 | ; |
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| 9 | ; @categories |
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| 10 | ; Utilities |
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| 11 | ; |
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| 12 | ; @param VARNAME {in}{required} |
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| 13 | ; The name of the variable we want erase |
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| 14 | ; |
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| 15 | ; @examples |
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| 16 | ; IDL> a=1 |
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| 17 | ; IDL> undefine,a |
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| 18 | ; % Compiled module: UNDEFINE. |
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| 19 | ; IDL> help, a |
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| 20 | ; A UNDEFINED = <Undefined> |
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| 21 | ; |
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| 22 | ; @history |
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| 23 | ; trouve sur la page web de D.Fanning |
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| 24 | ; <a href="http://www.dfanning.com"/> : |
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| 25 | ;QUESTION: How do I make an IDL variable have a type "undefined"? |
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| 26 | ;ANSWER: At the main IDL level you can use the IDL procedure <proidl>DELVAR</proidl> to |
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| 27 | ;delete an IDL variable and make it undefined. Inside of procedures |
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| 28 | ;and functions, I use this little program named <pro>undefine</pro> that I got |
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| 29 | ;from Andrew Cool at the DSTO High Frequency Radar Division in |
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| 30 | ;Adelaide, Australia. |
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| 31 | ; |
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| 32 | ; @version |
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| 33 | ; $Id$ |
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| 34 | ; |
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| 35 | ;- |
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| 36 | PRO undefine, varname |
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| 37 | ; |
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| 38 | compile_opt idl2, strictarrsubs |
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| 39 | ; |
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| 40 | tempvar = SIZE(TEMPORARY(varname)) |
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| 41 | END |
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