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Re: allocating data to different array on each loop step [message #46261 is a reply to message #46260]

Sun, 13 November 2005 18:02

Richard French
Messages: 173
Registered: December 2000

Senior Member

On 11/13/05 8:50 PM, in article
1131933033.894813.142800@z14g2000cwz.googlegroups.com, "snfinder@naver.com"
<snfinder@naver.com> wrote:

> Thank you Coyote~ ^^
>
> But If the number of loop step is so large,
> array1 = *arrays[0]
> array2 = *arrays[1]
> ...
> array24 = *arrays[23]
> this is very unefficient.
>
> I want to excute this automatically.
>
> And I can't know the number of loop step before end of all steps.
> um...ok can find out it if I excute loop twice......ok..
>
> Thank you ~
>

Well, you can use the EXECUTE command if you want to define the variables on
the fly:

pro arrays
for n=1L,10 do begin
;create arrays of different sizes
array=findgen(n)#findgen(10*n)
; construct a command to execute, defining the new variable name
cmd=string(n,format='("array",I0,"=array")')
print,cmd
result=execute(cmd)
endfor
help
end

IDL> arrays
array1=array
array2=array
array3=array
array4=array
array5=array
array6=array
array7=array
array8=array
array9=array
array10=array
% At ARRAYS 8 /Users/rfrench/arrays.pro
% $MAIN$
ARRAY FLOAT = Array[10, 100]
ARRAY1 FLOAT = Array[1, 10]
ARRAY10 FLOAT = Array[10, 100]
ARRAY2 FLOAT = Array[2, 20]
ARRAY3 FLOAT = Array[3, 30]
ARRAY4 FLOAT = Array[4, 40]
ARRAY5 FLOAT = Array[5, 50]
ARRAY6 FLOAT = Array[6, 60]
ARRAY7 FLOAT = Array[7, 70]
ARRAY8 FLOAT = Array[8, 80]
ARRAY9 FLOAT = Array[9, 90]
CMD STRING = 'array10=array'
N LONG = 11
RESULT INT = 1

Dick French

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[Message index]

		Re: allocating data to different array on each loop step By: Paolo Grigis on Mon, 14 November 2005 00:49
		Re: allocating data to different array on each loop step By: David Fanning on Sun, 13 November 2005 20:52
		Re: allocating data to different array on each loop step By: Richard French on Sun, 13 November 2005 19:31
		Re: allocating data to different array on each loop step By: snfinder@naver.com on Sun, 13 November 2005 19:25
		Re: allocating data to different array on each loop step By: Richard French on Sun, 13 November 2005 18:02
		Re: allocating data to different array on each loop step By: snfinder@naver.com on Sun, 13 November 2005 17:50
		Re: allocating data to different array on each loop step By: David Fanning on Sat, 12 November 2005 08:25
		Re: allocating data to different array on each loop step By: snfinder@naver.com on Sat, 12 November 2005 04:10
		Re: allocating data to different array on each loop step By: R.Bauer on Sat, 12 November 2005 03:08

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