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Re: Name of arrays [message #79257]

Mon, 20 February 2012 07:01

jeffnettles4870
Messages: 111
Registered: October 2006

Senior Member

On Feb 20, 4:46 am, Israel Rodriguez Hermelo <israelherm...@gmail.com>
wrote:
> On Feb 19, 5:00 pm, David Fanning <n...@idlcoyote.com> wrote:
>
>
>
>
>
>
>
>
>
>> Israel Rodriguez Hermelo writes:
>>> Why did you say that's a slippery slope? Is there a better solution?
>>> I'm already using it with no problems.
>
>> I see a lot of people who are just getting started with
>> programming wanting to name their variables like this.
>> It seems cool, but in the end it just leads to unmaintainable
>> programs. A variable is a variable. The variable named "a" is
>> just as good as the variable named "b". Yes, variables should
>> have good names in programs. But just give them a name
>> (e.g., "theseMonths") in the program module where you need them.
>> Don't go looking for them all over God's creation!
>
>> Cheers,
>
>> David
>
>> --
>> David Fanning, Ph.D.
>> Fanning Software Consulting, Inc.
>> Coyote's Guide to IDL Programming:http://www.idlcoyote.com/
>> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
>
> Thank you for your advice David. I'll try to avoid using
> scope_varfecht then.
> My problem however is not simply that I want to have pretty names for
> my variables. The problem is that I don't know a priori the number of
> arrays that I will need nor their size.
> For example, in some cases the input data might correspond to the
> months of February and July, but in other cases might correspond to
> January, March and April.
>
> MONTH = [ 'FEBRUARY' , 'JULY' , 'SEPTEMBER' ]
>
> To deal with this, I was trying:
>
> Nmonths=N_ELEMENTS(MONTH)
>
> for i=0, Nmonths-1 do begin
>
> readcol, MONTH(i)+'_data.txt', TEMPERATURE
>
> Ndays=N_ELEMENTS(TEMPERATURE)
>
> (scope_varfetch(MONTH(r)+'TEMPERATURE', /enter))=fltarr(Ndays)
>
> endfor
>
> I see why you wrote that scope_varfecht makes the leads to
> unmaintainable
> programs and I would prefer any other solution but I've been looking
> for it in the forum and I haven't found any. Do you have any
> suggestion?
> Thanks in advance!
>
> Regards,
>
> Israel

Could you just use 31 element arrays for all months and just have some
empty elements at the end of some of those arrays? It depends on what
you're going to do with the arrays of course, but this is the first
thing i'd try!

Jeff

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[Message index]

		Re: Name of arrays By: jeffnettles4870 on Mon, 20 February 2012 07:01
		Re: Name of arrays By: Fabzi on Mon, 20 February 2012 03:01
		Re: Name of arrays By: Israel Rodriguez Herm on Mon, 20 February 2012 01:46
		Re: Name of arrays By: David Fanning on Sun, 19 February 2012 08:00
		Re: Name of arrays By: Israel Rodriguez Herm on Sun, 19 February 2012 07:06
		Re: Name of arrays By: David Fanning on Sun, 19 February 2012 07:03
		Re: Name of arrays By: Israel Rodriguez Herm on Sun, 19 February 2012 06:54
		Re: Name of arrays By: Lajos Foldy on Sun, 19 February 2012 05:31
		Re: Name of arrays By: greg.addr on Tue, 21 February 2012 03:53
		Re: Name of arrays By: Russell[1] on Mon, 20 February 2012 13:27
		Re: Name of arrays By: Brian Wolven on Mon, 20 February 2012 10:15

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