conditioning array with complex number

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JK
JK el 14 de Sept. de 2021
Comentada: Star Strider el 14 de Sept. de 2021
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 el 14 de Sept. de 2021
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.
.
  2 comentarios
JK
JK el 14 de Sept. de 2021
thanks, it is working well.
Star Strider
Star Strider el 14 de Sept. de 2021
My pleasure!
If my Answer helped you solve your problem, please Accept it!
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