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Ellips kesalahan .pdf

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<strong>Ellips</strong> <strong>kesalahan</strong> standar: sumbu-sumbu utamaTransformasi koordinatξ = x cos θ + y sinθ= f1u+ f2vVariansi sebuah titik setelah transformasis2ξ=s22⎡σσcos ⎢2⎢⎣σxyσy⎤ cosθ⎥⎢⎥⎦⎣sinθx xy ⎡ ⎤[ θ sinθ] ⎥ ⎦Akar laten (tersembunyi, eigen value) dari matriks variansi adalah:2σ − λ σ2 2 2 2x xyσ= 0x+ σy( σx−σy)2λσxyσy− λ Dengan solusi: = ±2422+ 4σxyuuuu2( σx− λ1) + vσxy= 02( σx− λ2) + vσxy= 02σxy+ v( σy− λ1) = 02σ + v( σ − λ ) = 0xyy2tanθtanθσλ −σ2σ2xyxy1 x1= =tan 2θ1=22 2λ1−σyσσxyx−σy2λ σ1−σx xy2= =2σxyλ2−σxFebruari 2005gd2212-Hitung Perataan I

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