63 lines
1.3 KiB
Markdown
63 lines
1.3 KiB
Markdown
# Average
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Compute the weighted mean of matrix/vector values.
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```
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double vector::Average(
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const vector& weigts // weights vector
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);
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double matrix::Average(
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const matrix& weigts // weights matrix
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);
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vector matrix::Average(
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const matrix& weigts, // weights matrix
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const int axis // axis
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);
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```
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Parameters
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axis
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[in] Axis. 0 — horizontal axis, 1 — vertical axis.
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Return Value
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Weighted mean: scalar or vector.
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Note
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The weight matrix/vector is associated with the main matrix/vector.
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Example
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```
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matrixf matrix_a={{10,3,2},{1,8,12},{6,5,4},{7,11,9}};
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matrixf matrix_w=matrixf::Ones(4,3);
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Print("matrix_a\n",matrix_a);
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vectorf cols_average=matrix_a.Average(matrix_w,0);
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vectorf rows_average=matrix_a.Average(matrix_w,1);
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float matrix_average=matrix_a.Average(matrix_w);
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Print("cols_average ",cols_average);
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Print("rows_average ",rows_average);
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Print("average value ",matrix_average);
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/*
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matrix_a
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[[10,3,2]
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[1,8,12]
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[6,5,4]
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[7,11,9]]
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cols_average [6,6.75,6.75]
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rows_average [5,7,5,9]
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average value 6.5
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*/ value 6.5
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```
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