Re: elementwise vector scalar subtraction
- To: mathgroup at smc.vnet.net
- Subject: [mg35643] Re: [mg35625] elementwise vector scalar subtraction
- From: BobHanlon at aol.com
- Date: Wed, 24 Jul 2002 02:06:06 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
In a message dated 7/23/02 2:14:31 AM, divinesaam at aol.com writes: >I have a t-vector > >t = {0, 1, 1.5, 2, 2.5, 4, 6, 8, 10, 15, 20, 30}; > >I want to subtract 0.15 from each element except the first to get > >tc15 = {0, 1 - 0.15, 1.50 - 0.15, 2 - 0.15, 2.5 - 0.15, 4 - 0.15, 6 - >0.15, 8 - 0.15, 10 - 0.15, 15 - 0.15, 20 - 0.15, 30 - 0.15}; > >I then want to subtract 0.20 to get > >tc20 = {0, 1 - 0.20, 1.50 - 0.20, 2 - 0.20, 2.5 - 0.20, 4 - 0.20, 6 - >0.20, 8 - 0.20, 10 - 0.20, 15 - 0.20, 20 - 0.20, 30 - 0.20}; > >Is there a way to automate this process for n subtractions from 0.15 >to 0.30 to yield individual t-vectors for tc15 through tc30 ? > Clear[t]; t[x_] := Module[ {v={0,1,1.5,2,2.5,4,6,8,10,15,20,30}}, Join[{First[v]}, Rest[v]-(x/100.)]]; Clear /@ Table["tc"<>ToString[m], {m, 15, 30}]; Evaluate[Table[ToExpression["tc"<>ToString[m]], {m, 15, 30}]] = Table[t[15(1+m/15)], {m, 0, 15}]; tc15==t[15] True tc30==t[30] True Bob Hanlon Chantilly, VA USA