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MathGroup Archive 1998

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List handling

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15261] List handling
  • From: "Jorge Zickermann" <jzickermann at mail.EUnet.pt>
  • Date: Wed, 30 Dec 1998 01:50:23 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

listA= 

{1977.06,1977.06,1977.06,1977.06,1977.06,2047.77,2047.77,2047.77,2047.77,218
1.55,2181.55,2181.55,2244.73,2244.73,2244.73,2305.5,2305.5,2305.5,2305.5,236
3.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92
,2363.92}

ListB= 

{0.684807,0.683029,0.665242,0.665242,0.664123,0.683029,0.665242,0.665242,0.6
64123,0.640339,0.640339,0.620329,0.640339,0.640339,0.620329,0.661684,0.64033
9,0.640339,0.620329,0.640339,0.622044,0.640339,0.621506,0.660996,0.640339,0.
641006,0.640339,0.620935,0.640339,0.640339}

ListC=

{1971.45,1973.53,1994.29,1994.29,1995.6,2044.23,2065.,2065.,2066.3,2227.86,2
227.86,2251.22,2291.04,2291.04,2314.4,2326.89,2351.81,2351.81,2375.17,2410.2
2,2431.58,2410.22,2432.21,2386.11,2410.22,2409.44,2410.22,2432.88,2410.22,24
10.22}

Position[ListB,_?(#>0.68&)]

{{1},{2},{6}}

Having obtained the positions of certain selected elements from ListB, I
want to substitute the corresponding elements in ListA by the
corresponding elements in ListC. In other words, I want to end up with;


listA= 

{1971.45,1973.53,1977.06,1977.06,1977.06,2044.23,2047.77,2047.77,2047.77,218
1.55,2181.55,2181.55,2244.73,2244.73,2244.73,2305.5,2305.5,2305.5,2305.5,236
3.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92,2363.92
,2363.92}

Any help on how to do this is welcome. Thank you.

    Jorge


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