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angle in Matlab |
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angle
Phase angle Syntax P = angle(Z) Description P = angle(Z) returns the phase angles, in radians, for each element of complex array Z. The angles lie between . For complex Z, the magnitude R and phase angle theta are given by R = abs(Z) theta = angle(Z) and the statement Z = R.*exp(i*theta) converts back to the original complex Z. Examples Z = [ 1 - 1i 2 + 1i 3 - 1i 4 + 1i 1 + 2i 2 - 2i 3 + 2i 4 - 2i 1 - 3i 2 + 3i 3 - 3i 4 + 3i 1 + 4i 2 - 4i 3 + 4i 4 - 4i ] P = angle(Z) P = -0.7854 0.4636 -0.3218 0.2450 1.1071 -0.7854 0.5880 -0.4636 -1.2490 0.9828 -0.7854 0.6435 1.3258 -1.1071 0.9273 -0.7854 Algorithm The angle function can be expressed as angle(z) = imag(log(z)) = atan2(imag(z),real(z)). See Also abs, atan2, unwrap Add by Pancho You can edit it here |
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| Green Bank Telescope Enables "Intensity Mapping" to Shed Light on Mysteries of Dark Energy
Using the world's largest, fully steerable radio telescope--the National Science Foundation's Robert C. Byrd Green Bank Telescope (GBT) in W.Va.--an international team of researchers has given astronomers the promise of a new tool for mapping the universe and gaining valuable clues about the nature of the mysterious "dark energy" believed to constitute nearly three-fourths of the universe's mass and energy. "Intensity Mapping" offers the potential for ...
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