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MathGroup Archive 2006

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Re: how to compact many maps?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg70769] Re: how to compact many maps?
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Fri, 27 Oct 2006 00:28:05 -0400 (EDT)
  • References: <ehplcu$j9g$1@smc.vnet.net>

data = Table[{Random[], Random[]}, {10}, {5}];

d0 = ((MapAt[f, #1, 2] & ) /@ #1 & ) /@ data;

d1 = Table[{data[[i,j,1]], f[data[[i,j,2]]]}, {i, 1,
Dimensions[data][[1]]},
{j, 1, Dimensions[data][[2]]}];

d2 = data /. {x_Real, y_Real} -> {x, f[y]};

Dimensions /@ {data, d0, d1, d2}

{{10, 5, 2}, {10, 5, 2}, {10, 5, 2}, {10, 5, 2}}

d0 == d1 == d2

True

Regards
Dimitris


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