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Re: use of loops in IDL for hashtable [message #67904 is a reply to message #67895]

Mon, 07 September 2009 01:08

Wout De Nolf
Messages: 194
Registered: October 2008

Senior Member

On Sun, 6 Sep 2009 19:01:06 -0700 (PDT), "b.a" <u4565723@anu.edu.au>
wrote:

> Hi,
>
> I have 2 hashtables in my IDL program. one is called fileList which
> has ( id , data ) as its (key, value) and second one is colorList
> ( id , color ). I want to define a "foreach" loop so that for each id
> of colorList which exists in fileList, it plots the data with the
> "color". I mean for each string "id" get the "data" from fileList and
> get the "color" from colorList and plot the data in that colour.
>
> Can anybody help me with this please.
>
> Thank you

Are you using Craig Markwardt's hash table object? This object has a
method "KEYS" which returns all existing keys in a hash table, so you
can loop over all keys in colorList (or fileList), use "ISCONTAINED"
to check whether the key is in fileList (or colorList) and do your
plotting when it is (employing the Get method to get data and color).

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[Message index]

		Re: use of loops in IDL for hashtable By: b.a on Mon, 07 September 2009 20:35
		Re: use of loops in IDL for hashtable By: penteado on Mon, 07 September 2009 19:36
		Re: use of loops in IDL for hashtable By: b.a on Mon, 07 September 2009 19:16
		Re: use of loops in IDL for hashtable By: Wout De Nolf on Mon, 07 September 2009 01:08

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