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Student Support Forum: 'Protected Element Error' topicStudent Support Forum > General > Archives > "Protected Element Error"

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Kristen Rounds
04/25/99 09:32am

Early in my program I define a 4x4 matrix:

A1x:=M.b1x.Transpose[M];

Later I wish to allow the user to modify a matrix element:

If[StringMatchQ[terma,''a33'',IgnoreCase->True],
''A''<>sur<>''x''[1,1]=Input[''New a33 x value'']];

I am getting this error when I try to use the new A1x matrix:

SetDelayed::write: Tag StringJoin in A<>1<>x is Protected.

Please explain this error, and if there is a way to avoid it. Thanks.

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Subject (listing for 'Protected Element Error')
Author Date Posted
Protected Element Error Kristen Rounds 04/25/99 09:32am
Re: Protected Element Error Forum Modera... 04/26/99 09:52am
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