conditioning array with complex number

조회 수: 2 (최근 30일)
JK
JK 2021년 9월 14일
댓글: Star Strider 2021년 9월 14일
I would like to apply a condition to make certain complex numbers to zero.
condition: if complex number * conj(complex number) is less than 0.5, set complex number to zero.
I tried A(A.*conj(A)<0.5)=0. it didn't work out.

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Star Strider
Star Strider 2021년 9월 14일
Ran in:
This can probably be combined into fewer actual lines. I kept them separate to demonstrate the approach —
A = complex(rand(10),rand(10))
A =
0.3470 + 0.8859i 0.0137 + 0.7639i 0.1015 + 0.7223i 0.5190 + 0.9946i 0.2642 + 0.9262i 0.1227 + 0.4625i 0.5610 + 0.0151i 0.9365 + 0.1072i 0.9752 + 0.7804i 0.8272 + 0.9432i 0.4636 + 0.2904i 0.1338 + 0.2256i 0.3974 + 0.6367i 0.9876 + 0.3169i 0.2435 + 0.0412i 0.3481 + 0.5287i 0.9613 + 0.8060i 0.3516 + 0.6644i 0.7104 + 0.0387i 0.1082 + 0.4680i 0.0129 + 0.6059i 0.0952 + 0.5557i 0.5719 + 0.9788i 0.2254 + 0.7534i 0.8180 + 0.1280i 0.5472 + 0.2541i 0.8326 + 0.8705i 0.0095 + 0.3066i 0.3927 + 0.4640i 0.7428 + 0.6265i 0.7454 + 0.4747i 0.4278 + 0.9148i 0.8096 + 0.6022i 0.7720 + 0.5985i 0.2754 + 0.3324i 0.9874 + 0.6228i 0.5922 + 0.1384i 0.9802 + 0.0692i 0.6346 + 0.6318i 0.1758 + 0.3041i 0.6405 + 0.2935i 0.5829 + 0.1763i 0.2208 + 0.8402i 0.5265 + 0.3813i 0.8351 + 0.2082i 0.9958 + 0.7694i 0.3690 + 0.7676i 0.6434 + 0.2222i 0.0020 + 0.1934i 0.6156 + 0.8573i 0.0943 + 0.9701i 0.3803 + 0.4209i 0.1179 + 0.9497i 0.9916 + 0.6548i 0.2876 + 0.1710i 0.0866 + 0.8797i 0.3089 + 0.4247i 0.3803 + 0.3770i 0.7961 + 0.3813i 0.2586 + 0.0791i 0.5874 + 0.2785i 0.2163 + 0.3044i 0.2791 + 0.4933i 0.2559 + 0.8200i 0.8186 + 0.4434i 0.2505 + 0.6017i 0.5400 + 0.9447i 0.1880 + 0.5847i 0.6254 + 0.6406i 0.3905 + 0.6088i 0.3084 + 0.0559i 0.5232 + 0.9541i 0.1421 + 0.3563i 0.6262 + 0.1674i 0.8474 + 0.7592i 0.1504 + 0.9597i 0.8628 + 0.9455i 0.9468 + 0.2465i 0.5404 + 0.7113i 0.6113 + 0.0233i 0.2909 + 0.3973i 0.9900 + 0.4806i 0.3832 + 0.9495i 0.3579 + 0.1691i 0.1201 + 0.1768i 0.3424 + 0.0581i 0.0161 + 0.4895i 0.9649 + 0.5228i 0.0355 + 0.1678i 0.8364 + 0.5422i 0.1649 + 0.9458i 0.4645 + 0.4179i 0.3430 + 0.6006i 0.5904 + 0.2400i 0.2482 + 0.3173i 0.3150 + 0.9556i 0.7045 + 0.5468i 0.8496 + 0.4076i 0.4556 + 0.8503i 0.0623 + 0.0865i
A2 = A.*conj(A)
A2 = 10×10
0.9052 0.5838 0.5320 1.2586 0.9276 0.2290 0.3150 0.8886 1.5600 1.5739 0.2992 0.0688 0.5634 1.0759 0.0610 0.4007 1.5737 0.5651 0.5061 0.2308 0.3672 0.3178 1.2851 0.6184 0.6855 0.3640 1.4510 0.0941 0.3695 0.9442 0.7809 1.0198 1.0182 0.9541 0.1864 1.3628 0.3699 0.9656 0.8019 0.1234 0.4964 0.3708 0.7546 0.4226 0.7408 1.5837 0.7253 0.4634 0.0374 1.1140 0.9499 0.3218 0.9158 1.4120 0.1120 0.7814 0.2758 0.2868 0.7791 0.0731 0.4225 0.1395 0.3212 0.7379 0.8667 0.4248 1.1840 0.3773 0.8014 0.5231 0.0983 1.1840 0.1471 0.4201 1.2945 0.9436 1.6383 0.9573 0.7979 0.3742 0.2425 1.2111 1.0484 0.1567 0.0457 0.1206 0.2399 1.2044 0.0294 0.9935 0.9217 0.3904 0.4783 0.4062 0.1622 1.0124 0.7954 0.8880 0.9305 0.0114
idx = A2 < 0.5
idx = 10×10 logical array
0 0 0 0 0 1 1 0 0 0 1 1 0 0 1 1 0 0 0 1 1 1 0 0 0 1 0 1 1 0 0 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 0 1 1 0 0 1 0 0 1 0 1 1 0 1 1 1 1 0 0 1 0 1 0 0 1 0 1 1 0 0 0 0 0 1 1 0 0 1 1 1 1 0 1 0 0 1 1 1 1 0 0 0 0 1
A(idx) = 0
A =
0.3470 + 0.8859i 0.0137 + 0.7639i 0.1015 + 0.7223i 0.5190 + 0.9946i 0.2642 + 0.9262i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.9365 + 0.1072i 0.9752 + 0.7804i 0.8272 + 0.9432i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.3974 + 0.6367i 0.9876 + 0.3169i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.9613 + 0.8060i 0.3516 + 0.6644i 0.7104 + 0.0387i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.5719 + 0.9788i 0.2254 + 0.7534i 0.8180 + 0.1280i 0.0000 + 0.0000i 0.8326 + 0.8705i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.7428 + 0.6265i 0.7454 + 0.4747i 0.4278 + 0.9148i 0.8096 + 0.6022i 0.7720 + 0.5985i 0.0000 + 0.0000i 0.9874 + 0.6228i 0.0000 + 0.0000i 0.9802 + 0.0692i 0.6346 + 0.6318i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.2208 + 0.8402i 0.0000 + 0.0000i 0.8351 + 0.2082i 0.9958 + 0.7694i 0.3690 + 0.7676i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.6156 + 0.8573i 0.0943 + 0.9701i 0.0000 + 0.0000i 0.1179 + 0.9497i 0.9916 + 0.6548i 0.0000 + 0.0000i 0.0866 + 0.8797i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.7961 + 0.3813i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.2559 + 0.8200i 0.8186 + 0.4434i 0.0000 + 0.0000i 0.5400 + 0.9447i 0.0000 + 0.0000i 0.6254 + 0.6406i 0.3905 + 0.6088i 0.0000 + 0.0000i 0.5232 + 0.9541i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.8474 + 0.7592i 0.1504 + 0.9597i 0.8628 + 0.9455i 0.9468 + 0.2465i 0.5404 + 0.7113i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.9900 + 0.4806i 0.3832 + 0.9495i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.9649 + 0.5228i 0.0000 + 0.0000i 0.8364 + 0.5422i 0.1649 + 0.9458i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i 0.3150 + 0.9556i 0.7045 + 0.5468i 0.8496 + 0.4076i 0.4556 + 0.8503i 0.0000 + 0.0000i
Experiment to get different results.
.
  댓글 수: 2
JK
JK 2021년 9월 14일
thanks, it is working well.
Star Strider
Star Strider 2021년 9월 14일
My pleasure!
If my Answer helped you solve your problem, please Accept it!
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