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Johan Johan


Last seen: ungefär 4 år ago |  Active since 2018

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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...

nästan 5 år ago | 0 answers | 0

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Question


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...

nästan 5 år ago | 1 answer | 0

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Question


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...

nästan 5 år ago | 0 answers | 0

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Question


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 ...

nästan 5 år ago | 2 answers | 0

2

answers

Question


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);...

ungefär 5 år ago | 1 answer | 0

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Question


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...

ungefär 5 år ago | 2 answers | 1

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answers

Question


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...

mer än 5 år ago | 3 answers | 0

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answers

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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...

mer än 5 år ago | 1 answer | 0

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Question


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(...

mer än 5 år ago | 1 answer | 0

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Question


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 ...

mer än 5 år ago | 1 answer | 0

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answer

Question


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...

mer än 5 år ago | 1 answer | 0

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Question


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] ...

nästan 6 år ago | 0 answers | 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...

nästan 6 år ago | 1 answer | 0

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Question


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...

mer än 6 år ago | 1 answer | 0

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answer

Question


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...

mer än 6 år ago | 3 answers | 0

3

answers

Question


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...

mer än 6 år ago | 0 answers | 0

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Question


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)....

mer än 6 år ago | 0 answers | 0

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

mer än 6 år ago | 1 answer | 0

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Question


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 ...

mer än 6 år ago | 1 answer | 0

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Question


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

mer än 6 år ago | 1 answer | 0

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Question


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...

mer än 6 år ago | 1 answer | 0

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answer

Question


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...

mer än 6 år ago | 1 answer | 0

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Question


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...

mer än 6 år ago | 1 answer | 0

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Question


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 ,...

mer än 6 år ago | 0 answers | 0

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answers

Question


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...

mer än 6 år ago | 1 answer | 0

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answer

Question


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 . ...

mer än 6 år ago | 0 answers | 0

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Question


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...

mer än 6 år ago | 1 answer | 0

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Question


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...

mer än 6 år ago | 0 answers | 0

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