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# Johan Johan

Last seen: 약 1년 전 2018 이후 활성

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질문

Peak magnitude and peak ripple magnitude
I have a signal how can i know the peak magnitude of it? does it mean '' peak ripple magnitude'',what is the difference betweenp...

1년 이상 전 | 답변 수: 0 | 0

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The precision of plot filter design function is different than plot just coefficients of the same function of filter
I'm confused about plotting the design filter with the same precision ,for example i have this coefficients (i found it by usin...

1년 이상 전 | 답변 수: 1 | 0

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Extraction the magnitude responce point
I have this code matlab >> w = -pi:pi/500:pi; >> H = freqz(ones(1,10)/10,1,w); >> subplot(211) >> plot(w,abs(H)) >> grid; a...

1년 이상 전 | 답변 수: 0 | 0

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Select numbers from a vector under a specific condition
I have this code for i=1:5; minValue = 0.0251; maxValue = 3.9811 / 5; % Divide by 5 to ensure sum of 5 is less than 3.9811 ...

2년 이하 전 | 답변 수: 2 | 0

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Loop iteration with condition met
I have this program in matlab close clc %%%%%%%%%%%%%%%% Tol = 0.5;ma=10;t=[1 2];B=[];loopEnd=3; myData = zeros(ma,loopEnd);...

2년 이하 전 | 답변 수: 1 | 0

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Binary floating point Representation in Matlab
Floating-point numbers are represented as X=(-1)^s*m*2^c. s: the sign m:matissa c:exponent For example The value 1.984...

약 2년 전 | 답변 수: 2 | 1

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Solve systems of linear equations Ax = B for x
x = A\B solves the system of linear equations A*x = B. The matrices A and B must have the same number of rows. But ,what is the...

약 2년 전 | 답변 수: 3 | 0

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Index Vector Operation in Matlab
If the matrix A and the vector b A = 5×5 13 2 3 3 10 14 5 15 7 1 2 9 15...

약 2년 전 | 답변 수: 1 | 0

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The real-valued amplitude response
Where amplitude response A(w) is continuous and real-valued. How i can write a Matlab function that uses the FFT to compute A(...

약 2년 전 | 답변 수: 1 | 0

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How can I change a FOTRAN code into a MATLAB code
To convert, followings are some steps i applied : 1. Download and extract f2matlab into your computer 2. In matlab, go to the ...

약 2년 전 | 답변 수: 1 | 0

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Convergence in genetic algorithm method
Hi I used the genetic algorithm, in general idea about this method ,the convergence and the number of iteration is related b...

약 2년 전 | 답변 수: 1 | 0

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Multiplying a Vector by a Matrix in matlab
I found this problem in matlab when i want to multiplying a vector by matrix. : n=0:4; r=exp(-j)*n; o=[1 2 0; 3 2 0;5 6 1] ...

2년 이상 전 | 답변 수: 0 | 0

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Crossover applications in matlab
I want to apply crossover betweem x1 and x2 x1=[ -1.0000 - 1.0000i 2.0000 - 2.0000i 3.0000 - 3.0000i]; x2=[ -4.0000 - 4.0...

2년 이상 전 | 답변 수: 1 | 0

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How to create initial population of 100 random set of coefficient for design filter using genetic algorithm?
The vector contain a 51 coefficients ,and i want to random a vector 100 times (initialization in GA),what is the method ?does it...

약 3년 전 | 답변 수: 1 | 0

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Genetic Algorithm : Lower and Upper Bounds
How to choose the VarMin (Lower Bound of decision Variables) and VarMax (Upper Bound of Variables) of any problem when using th...

약 3년 전 | 답변 수: 2 | 0

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Efficient integral in optimization methods
What is the difference between *trapz* and *integral* function if use them in objection function for optimization with any e...

약 3년 전 | 답변 수: 0 | 0

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the operations in genetic operators
when applicat the genetic algorithm in matlab there is two type of crossover the first type is y1=alpha.*x1+(1-alpha)....

약 3년 전 | 답변 수: 0 | 0

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The point between popc(k,1) and cost -- what does it mean? popc(k,1).Cost=CostFunction(popc(k,1).Position);

약 3년 전 | 답변 수: 1 | 0

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Objective function with array as decision variable
if x is a vector of values, n=10; x = [0.0001 0.0003 0.0007 0.0020 0.0055 0.0148 ... 0.0403 ...

약 3년 전 | 답변 수: 1 | 0

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Real Coded Genetic Algorithm
What controls to using the real encoding in genetic algorithm - the variables which using in the problem - or the initial ...

3년 이상 전 | 답변 수: 1 | 0

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How to plot an integral a function handle
I want to plot an integral function, if *'y'* is an arbitrary vector , N=51; I=@(x)norm(exp(-1i*pi*x)- y'.*exp(-1i*pi*x*(0...

3년 이상 전 | 답변 수: 1 | 0

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What is the difference between function and objective function in MATLAB ?
To know how to applicate the objective function for in a better way, I want to find the difference between function and objec...

3년 이상 전 | 답변 수: 1 | 0

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Dimension of the workspace array
l have this matlab code : N=51; f=[linspace(-1,-.18,164),linspace(-0.1,0.3,80),linspace(.38,1,124)]; d=[zeros(1,164),on...

3년 이상 전 | 답변 수: 1 | 0

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Optimization with genetic algorithm
I have this objective function : E = @(x,y) norm((d(x)-r(x).*y).^2); I want to optimize vector *'y'* using ga ,...

3년 이상 전 | 답변 수: 0 | 0

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Genetic Algorithm and Direct Search Toolbox
If i want to optimize a problem using genetic algorithm ,what is the appropriate, is it use : the type of matlab code in th...

3년 이상 전 | 답변 수: 1 | 0

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Genetic algorithm optimization using toolbox
I want to optimize vector of complex coefficient (Contains negative values), but I wonder how can i chose the right tools . ...

3년 이상 전 | 답변 수: 0 | 0

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How represent a discrete-time signal in Matlab ?
Basically need two vectors to represent a signal : - one vector : for horizontal axis (time) . - second vector : for ampli...

3년 이상 전 | 답변 수: 1 | 0

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How to define integral function in objective function
I want to minimize the The objective function using least squares method. The objective function is :E=|d(x)-r(x)*Fi|^2 Th...

3년 이상 전 | 답변 수: 0 | 0

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