Community Profile Active since 2011

Professional Interests: Optimization, Evolutionary Computation

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Question

how to force Draggable points to move along a line?
Hi All. I would like to use impoint to generate a draggable point. But I want to force it to move along a line. I try to do so ...

ungefär 10 år ago | 1 answer | 0

### 1

optimization routine for function that is not smooth and also has a lot of local minimum
All the algorithms suitable for black-box optimization can be used. These algorithms, including Genetic algorithms (GA) and Part...

mer än 10 år ago | 0

Question

Wilcoxon rank sum test
I would like to check if my data is smaller than zero or not. Assume the following example. A = -1*ones(15,1); [p, h, S...

ungefär 11 år ago | 1 answer | 2

### 1

how to cyclically shift an array?
x = [1 : 1 : 10] for i = 1 : 5 x = [x(2:end) x(1)] end

mer än 11 år ago | 0

plotting lines
y = [0:.1:10] plot(5,y) xlabel('Re') ylabel('Im') http://en.wikipedia.org/wiki/Imaginary_number

mer än 11 år ago | 0

problem plotting complex function
The problem is that eps_compl is just a single number, and not an array. You compute eps_compl for every point, but you do not ...

mer än 11 år ago | 0

| accepted

A little help?
The Matrix of interest of poster is: A = [1,2,3;4,5,6;7,8,9]; and the soloution is the following: B = A - min(A(:)); C...

mer än 11 år ago | 0

xlabel('Frequency (Hz)'); ylabel('Surface Impedance');

mer än 11 år ago | 2

| accepted

ODE 45 intermediate value?
So the dynamics of your model changes based on the outcome of the model. Supose that when y(1) at time t1 gets above for instanc...

mer än 11 år ago | 1

Return coordinate of first nonzero element.
A=boolean(2*rand(10,10)>1) % Creating a random Matrix Row = 2; % Assumung you are looking for the first 0 of the row 2. Co...

mer än 11 år ago | 0

A little help?
Matrix = 2*rand(10,10) - 1

mer än 11 år ago | 0

Question

Matrix position stored in a variable!
Suppose A=rand(10,10) and I need to access the following elements in A: A(2,3), A(4,5), A(6,7). If the positions are stored in a...

mer än 11 år ago | 1 answer | 0

### 1

ode45
The only thing you have to do is to change plot(t,x(1),'red') to plot(t,x(:,1),'red') and so on for the rest o...

mer än 11 år ago | 0

| accepted

Question

ind2sub output dimension
My question is regarding the output of the ind2sub function. In my code, since the input dimention of ind2sub changes, i should ...

mer än 11 år ago | 2 answers | 0

### 2

WFDB - reading in ECG files
First you have to download the rdsign212.m and rdsign212.dll. To read the first N samples of an M-lead ECG (supposing that the d...

mer än 11 år ago | 0

mer än 11 år ago | 1

ploting graph.
x=linspace(0,10,100); y1 = 5*x.^2 + 9*x - 5; y2 = -2*x.^2 + 4*x + 10; plot(x,y1,'r'); hold on; plot(x,y2,'b'); ...

mer än 11 år ago | 0

minimum of an array
My guess is the the following scales better: B = A; %work on a copy, not the original B([2 5],:) = []; %remove the 2...

mer än 11 år ago | 0

Question

Accessing to the position stored in a variable
Suppose I have a matrix, A=rand(5,5) and an array, b=[2,3]. How can I extract the A(2,3) element? I know a simple solution is A(...

mer än 11 år ago | 1 answer | 0