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Replace list element based on a condition how to

• To: mathgroup at smc.vnet.net
• Subject: [mg106630] Replace list element based on a condition how to
• From: Canopus56 <canopus56 at yahoo.com>
• Date: Tue, 19 Jan 2010 05:13:58 -0500 (EST)

Q1. Is there a way to replace a list based on a condition? 

I have a list of integers - 

lst1 = {18, 19, 20, 21, 22, 23, 0, 1, 2, 3} 

that I would like to replace with the following rule - 

fncHourFix[h_] := If[(h - 6) < 0, h - 6 + 24, h - 6];

but the replace function - 

lst2 = lst1 /. {i_} :> fncHourFix[{i}] 

- bombs out. 

I've tried several variants.

Any pointers would be appreciated. 

Thanks - Kurt 



      

• Follow-Ups:
  • Re: Re: Re: Replace list element
    • From: DrMajorBob <btreat1@austin.rr.com>
  • Re: Replace list element based on a condition how to
    • From: Patrick Scheibe <pscheibe@trm.uni-leipzig.de>
  • Re: Replace list element based on a condition how to
    • From: Adriano Pascoletti <adriano.pascoletti@dimi.uniud.it>