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Re: Most Common IDL Programming Errors [message #59912 is a reply to message #59772]

Fri, 11 April 2008 09:02

R.G. Stockwell
Messages: 363
Registered: July 1999

Senior Member

"Tom McGlynn" <tam@milkyway.gsfc.nasa.gov> wrote in message
news:08513f0c-9af3-4613-900c-2449d1306fc5@l42g2000hsc.google groups.com...
> On Apr 9, 10:18 pm, Tom McGlynn <t...@milkyway.gsfc.nasa.gov> wrote:
> ...
>> Another is fogetting the inherently parallel nature of array
>> operations, e.g., something like expecting
>>
>> x=[0,1,1,2,2,2]
>> y=indgen(3)
>>
>> y[x] = y[x]+1
>>
>> to give something other than 1,1,1.
>>
> And perhaps I should include using the XXXgen functions when one
> means XXXarr!
> Tom

XXXarr needs a /nan keyword (to fill it with nans).
I always use it like

a = fltarr(len) + !values.f_nan

-bob

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[Message index]

		Most Common IDL Programming Errors By: David Fanning on Tue, 08 April 2008 17:13
		Re: Most Common IDL Programming Errors By: Tom McGlynn on Fri, 11 April 2008 05:55
		Re: Most Common IDL Programming Errors By: R.G. Stockwell on Fri, 11 April 2008 09:02
		Re: Most Common IDL Programming Errors By: David Fanning on Fri, 11 April 2008 05:58
		Re: Most Common IDL Programming Errors By: R.G. Stockwell on Thu, 10 April 2008 11:16
		Re: Most Common IDL Programming Errors By: Vince Hradil on Thu, 10 April 2008 07:31
		Re: Most Common IDL Programming Errors By: Vince Hradil on Thu, 10 April 2008 07:29
		Re: Most Common IDL Programming Errors By: mmiller3 on Thu, 10 April 2008 06:22
		Re: Most Common IDL Programming Errors By: Maarten[1] on Thu, 10 April 2008 04:35
		Re: Most Common IDL Programming Errors By: Erik[1] on Thu, 10 April 2008 02:29
		Re: Most Common IDL Programming Errors By: izimine on Thu, 10 April 2008 01:51
		Re: Most Common IDL Programming Errors By: Gaurav on Thu, 10 April 2008 00:01
		Re: Most Common IDL Programming Errors By: David Fanning on Wed, 09 April 2008 22:29
		Re: Most Common IDL Programming Errors By: Tom McGlynn on Wed, 09 April 2008 19:18
		Re: Most Common IDL Programming Errors By: Doug on Wed, 09 April 2008 14:33
		Re: Most Common IDL Programming Errors By: David Klassen on Wed, 09 April 2008 11:10
		Re: Most Common IDL Programming Errors By: rlayberry on Thu, 17 April 2008 08:52
		Re: Most Common IDL Programming Errors By: pgrigis on Wed, 16 April 2008 14:39
		Re: Most Common IDL Programming Errors By: R.Bauer on Sun, 13 April 2008 10:28
		Re: Most Common IDL Programming Errors By: David Fanning on Sat, 12 April 2008 11:59
		Re: Most Common IDL Programming Errors By: Vince Hradil on Fri, 11 April 2008 14:23
		Re: Most Common IDL Programming Errors By: Kenneth P. Bowman on Fri, 11 April 2008 11:37
		Re: Most Common IDL Programming Errors By: R.G. Stockwell on Fri, 11 April 2008 13:52
		Re: Most Common IDL Programming Errors By: Vince Hradil on Fri, 11 April 2008 10:54
		Re: Most Common IDL Programming Errors By: R.G. Stockwell on Fri, 11 April 2008 10:41
		Re: Most Common IDL Programming Errors By: Matt[2] on Fri, 11 April 2008 09:30
		Re: Most Common IDL Programming Errors By: David Fanning on Tue, 10 July 2012 05:50
		Re: Most Common IDL Programming Errors By: gerapagi on Tue, 10 July 2012 01:33

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