[portland] Interating Tuples Through a List

[Rich Shepard]

On Mon, 10 Mar 2008, kirby urner wrote:

> Note that if you're trying to do a sort within sort, you can do like
> a database key (m, n), where m, n are your two fields.

Kirby, et al.:

   I thought of a clearer way to explain what I'm trying to do; I hope that
you'll see where I got stuck and can get me going again in the right
direction.

   I have a list of tuples. Each tuple has 17 fields in the range [0,16].
What I need to do is this:

   For each component (item[3]):
     For each subcomponent (item[2]):
       For each variable (item[1]):
         For each term (item[0] in range [1,item[16]):
           draw axes
 	  plot the curve for each term (item[4), in sequential order (item[5])
           by calling the plotting function and passing appropriate parameters
 	  (other items)
 	next term
 	close axes (set up for next multicurve plot)
       next variable
     next subcomponent
   next component

   Here's the non-working (as intended) code:
     for row in self.appData.tsets:
       curComp = row[3]
       tb.textOut(row[3])      # print component name
       tb.x += 9
       for s in row:
         curSub = s[2]
         if s[2] == '':
           tb.x += 36
           tb.textOut(curSub)      # print subcomponent name
           tb.x += 9
         print s
         for v in s:
           curVar = v[1]
           print curVar
           tb.textLine(curVar)     # print variable name
           # set up for plotting

   But, 's' is not what I thought it should be. Therefore, I need to learn
how to properly code these nested loops so that all values in the tuple are
present in each loop.

Rich

-- 
Richard B. Shepard, Ph.D.               |  Integrity            Credibility
Applied Ecosystem Services, Inc.        |            Innovation
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