logic used in matlab

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ali hassan
ali hassan 2020-11-18
评论： Steven Lord 2020-11-18
what does this code mean.plzz explain step by step
code:
idx = any(possibleSol < 0) | any(imag(possibleSol) ~=0);
possibleSol(:, idx) = [];
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ali hassan
ali hassan 2020-11-18
plz help
https://in.mathworks.com/matlabcentral/answers/649193-array-forming-for-solution#answer_545693

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Steven Lord
Steven Lord 2020-11-18
When you see a line of MATLAB code you don't understand, try breaking it into pieces. If you don't understand the pieces, break them up or look in the documentation.
idx = any(possibleSol < 0) | any(imag(possibleSol) ~=0); % the line
Breaking at the | operator gives pieces:
any(possibleSol < 0) % piece 1
any(imag(possibleSol) ~= 0) % piece 2
Breaking the first of those into pieces:
possibleSol < 0 % piece 1 part 1 = PP1
any( PP1 ) % piece 1 part 2
Do you understand piece 1 part 1? If not:
doc <
Do you understand what piece 1 part 2, calling any on piece 1 part 1, does? If not:
doc any
That tells you what piece 1 does. Do the same for piece 2, split it into parts. Then put the pieces back together: if you're not sure about the | operator:
doc |
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ali hassan
ali hassan 2020-11-18
https://in.mathworks.com/matlabcentral/answers/652413-logic-used-in-matlab#answer_548758
thankyou sir for your efforts but i could'nt totally understand it.i could'nt understand doc part
Steven Lord
Steven Lord 2020-11-18
If you don't understand what a function or operator in MATLAB does, look at its documentation page. You can open the documentation pages using the doc function. To open the documentation page for the any function, for example:
doc any

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