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Re: Converting list of subscripted variables into an array

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  Re: Converting list of subscripted variables into an array Alexei Boulbitch <alexei.boulbitch@iee.lu> - 2011-04-22 09:40 +0000

#1835 — Re: Converting list of subscripted variables into an array

Chris,

what about the following:

Subscript[c1, 1] = {1.796875, 1.34375};

Subscript[c1, 2] = {2.15625, 1.34375};

Subscript[c1, 3] = {2.296875, 1.359375};

Subscript[c1, 4] = {2.375, 1.46875};

Subscript[c1, 5] = {2.46875, 1.671875};


Clear[u];
Do[u[1, j] = Subscript[c1, j], {j, 1, 5}]

u[1, 5]

{2.46875, 1.67188}

?? I write u[i,j] instead of C[i,j], since C is protected.

Or you may make a table out of it and simultaneously the array:

tab = Table[u[1, j] = Subscript[c1, j], {j, 1, 5}]

{{1.79688, 1.34375}, {2.15625, 1.34375}, {2.29688, 1.35938}, {2.375,
   1.46875}, {2.46875, 1.67188}}

u[1, 1]

{1.79688, 1.34375}

Have fun. Alexei















I have a long list that's supposed to represent points on 9 different
curves. I'd like to put them into an array C[j,k] where j is the index for
the curves and k is the index for the points.

Subscript[c1, 1] = {1.796875, 1.34375}

Subscript[c1, 2] = {2.15625, 1.34375}

Subscript[c1, 3] = {2.296875, 1.359375}

Subscript[c1, 4] = {2.375, 1.46875}

Subscript[c1, 5] = {2.46875, 1.671875}
......

I'm new at pattern matching, and I'm having a hard time getting started
here. Can anyone steer me in the right direction?

Chris Young
cy56 at comcast.net
IntuMath.org

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