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Re: indexing over structure tags [message #24813 is a reply to message #24811]

Thu, 19 April 2001 10:05

Paul van Delst
Messages: 364
Registered: March 1997

Senior Member

Paul van Delst wrote:
>
> Randall Skelton wrote:
>>
>> Hello,
>>
>> Imagine someone has a structure of structures...
>>
>> ; define the basic structure for each
>> sm_struc = {basic_struct, comment: ' ', values: fltarr(nlev)}
>>
>> ; define the large structure
>> data = {big_struct, so4: sm_struc, co2: sm_struc, hcl: sm_struc}
>>
>> The IDL manual describes how to make an array of the tags in a structure
>> using:
>>
>> ; get the names of the tags
>> names = tag_names(data)
>>
>> so that names = [so4, co2, hcl].
>>
>> That is all fine. But is it possible to index over the tag names with a
>> for-loop?
>>
>> i.e. for i=0, n_elements(names)-1 do data.names[i].values = i
>> ^^^^^^^^^^^^^^^^^^^^
>
> Maybe
>
> data.names[i].(j) where j=0->N_TAGS(data.names[i])-1 ??
>
> This works on "single-level" structures but I don't see why it wouldn't work on nested
> ones.

Oops, I guess you really wanted something like

data.(i).values

where i=0->number of molecular names

'Scusi

paulv

--
Paul van Delst A little learning is a dangerous thing;
CIMSS @ NOAA/NCEP Drink deep, or taste not the Pierian spring;
Ph: (301)763-8000 x7274 There shallow draughts intoxicate the brain,
Fax:(301)763-8545 And drinking largely sobers us again.
paul.vandelst@noaa.gov Alexander Pope.

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[Message index]

		Re: indexing over structure tags By: tam on Thu, 19 April 2001 12:23
		Re: indexing over structure tags By: tam on Thu, 19 April 2001 12:25
		Re: indexing over structure tags By: Paul van Delst on Thu, 19 April 2001 11:08
		Re: indexing over structure tags By: Vapuser on Thu, 19 April 2001 10:36
		Re: indexing over structure tags By: Bernard Puc on Thu, 19 April 2001 10:50
		Re: indexing over structure tags By: tam on Thu, 19 April 2001 10:16
		Re: indexing over structure tags By: Randall Skelton on Thu, 19 April 2001 10:24
		Re: indexing over structure tags By: R.Bauer on Tue, 24 April 2001 00:45
		Re: indexing over structure tags By: Paul van Delst on Thu, 19 April 2001 10:05
		Re: indexing over structure tags By: Paul van Delst on Thu, 19 April 2001 10:00

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