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Paste #1299: octave

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A =

   0.00000   0.53484   0.29289
   1.00000   0.81844   0.67935
   1.00000   0.14699   0.38383
   0.00000   0.94356   0.84100
   0.00000   0.22505   0.50152
   1.00000   0.85073   0.73703

octave:11> idxZero=A(:,1)==0
idxZero =

   1
   0
   0
   1
   1
   0

octave:12> idxOne=A(:,1)==1
idxOne =

   0
   1
   1
   0
   0
   1

octave:13> B(idxZero)=A(idxZero,2)
error: invalid vector index = 0
error: assignment failed, or no method for `matrix = matrix'
error: evaluating assignment expression near line 13, column 11

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