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Stephan


Last seen: 4 dagen ago Active since 2017

Knowledge means knowing where it is written... Interested in: - Optimization - Mathematical Modelling - Improvement of my programming skills

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Answered
why is my code not working?
v=[2;0;1;9;0;1;3;0;1]; m=max(v); n=mean(v); f=@(x) m-(1/2).*x; % Vectorized g=@(x) 2.*x.^2-n; % Vectorized figure ezpl...

13 dagen ago | 0

Answered
how to merge two figures
Have a look at: yyaxis

7 maanden ago | 0

Answered
Finding out the minimum value position of a matrix
a=[1 2 3 4 5 10;2 3 5 6 1 12;2 6 4 5 7 16;10 2 1 4 5 20;2 3 1 4 9 12] % Here for the example row = 5, col = 1...3 ii = 5; % wa...

11 maanden ago | 0

Answered
Automatically fit a circle on an arc in image and to plot the circle in the image.
This example from the documentation appears to be suitable for your case.

meer dan een jaar ago | 0

Answered
MaxFunctionEvaluations not working in optimset() for fsolve()
See the documentation:

meer dan een jaar ago | 1

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Answered
Generation of a pair of random numbers satisfying a constraint
N = 10; r = sort(rand(N,2),2)

meer dan een jaar ago | 0

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Answered
Dimensions of arrays being concatenated are not consistent.
clc; clear all; close all; %% Parametri %% Inercija; {kg.m2} Juc = 2.6e-2; Jlc = 1e-3; %% Kruto...

meer dan een jaar ago | 0

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Answered
How can I vectorize the fun in Matlab with single code
Possible, but not recommended: https://de.mathworks.com/help/matlab/ref/vectorize.html

meer dan een jaar ago | 0

Answered
functions within the script
a1=myfunction(5) a2=myfunction(7) function a=myfunction(r) a=10*r end

meer dan een jaar ago | 1

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Answered
can i pleas be helped on the following code i dnt understand the outpu
A=[2 4 10 13;16 3 7 18;8 4 9 25;3 12 15 17] A(4:8) You need to understand linear indexing in Matlab: https://de.mathworks.com...

meer dan een jaar ago | 0

Answered
How to solve simulatenous coupled non linear differential equation
https://de.mathworks.com/help/matlab/examples.html?category=ordinary-differential-equations

meer dan een jaar ago | 0

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Answered
Failure in initial objective function evaluation when I'm solving a linear programming.
Use: function z= myobj01(x) z= -3*x(1)-4*x(2); end

meer dan een jaar ago | 0

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Answered
Creation of a black and white image
image=zeros(512,512); image(206:305,206:305)=255; imshow(image)

meer dan een jaar ago | 0

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Answered
From symbolic to numerical results for quadratic equation
You could use symbolic functions: syms y(a,b,x) y(a,b,x) = a*x^2 - b*x % Calculate values for a=1, b=2 and x in a range from...

meer dan een jaar ago | 0

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Answered
Create an equally spaced vector when taking the sine of another vector
p_inv = linspace(-1,1,25); theta = asin(p_inv); p = sin(theta); diff(p) % Is p equally spaced? scatter(p,theta)

meer dan een jaar ago | 0

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Answered
Comparing 2 frames from video
Try: function [P,MSE]=Untitled(original_img,stego_img) original_img=double(original_img); stego_img=double(stego_img); if ...

meer dan een jaar ago | 0

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Answered
I am unable to find pv array in 2014b please help me to find it.
PV Array was introduced with R2015a - you can not find it in R2014b - see the link. Are you sure your friends version is 2014a? ...

meer dan een jaar ago | 0

Answered
HOW TO SOLVE 2 EQUATION ODE USING ODE45 IN MATLAB?
f = @(t,y) [0.303*y(1)-0.557*y(1).^2+0.260*y(2).*y(1);... 0.0345*y(2)-1.18e-7*y(2).^2+3.55e-14*y(1).*y(2)]; Y0 = [0.0718,0...

meer dan een jaar ago | 0

Answered
How to plot parametric curve
https://de.mathworks.com/help/matlab/ref/fplot.html#bu6xntl-12

meer dan een jaar ago | 0

Answered
Get mean and stdev from all values
Use a table and then use findgroups combined with splitappy. This will allow you to solve the problem with a few lines of code. ...

meer dan een jaar ago | 0

Answered
Vectors must be the same length.
Change line 1: t=linspace(0,1,256); fc=60; fm=15; ac=1; am=1; wc=2*pi*fc; wm=2*pi*fm; mt=am*cos(wm*t); m_ac=ac*cos(wc...

meer dan een jaar ago | 0

Answered
hello everyone. How to divide a group of points named data into two parts, dataA and dataB, as shown in the figure. Thank you very much.
% divide data idx = clusterdata(data,2); dataA = data(idx==2,:); dataB = data(idx==1,:); % plot results scatter(dataA(:,1...

meer dan een jaar ago | 0

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Answered
element wise operation column matrix
Temp_data= [20;27;29;33;40] Case_1 = Temp_data - Temp_data(1) Case_2 = diff(Temp_data)

meer dan een jaar ago | 0

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Return the number of rows of an array
A = [10 20 30 40 50 60 70 80 90 100] B = A(A<50)

meer dan een jaar ago | 0

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Answered
Getting wrong sine wave for frequency 10KHz
Think about your sampling rate: f = 10000; t = 0:1/(25*f):0.002; plot(t,sin(2*pi*f.*t))

meer dan een jaar ago | 0

Answered
split matrix into two based on column values
A = [ 1 2 1.4; 1 3 1.4; 2 5 1.4; 1 5 81; 3 4 1.4; 5 4 81] A1 = A(A(:,end)>80,:) A2 = A(A(:,end)<=80,:)

meer dan een jaar ago | 0

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Answered
How to change the direction of x axis.
A = imread('ngc6543a.jpg'); imshow(A) B = fliplr(A); imshow(B)

meer dan een jaar ago | 1

Answered
Why can't a circle be detected in such an obvious image?
Use a range for radius input argument such as: [centers1,radii1] = imfindcircles(img,[50 200],'Sensitivity',0.85,'ObjectPolarit...

meer dan een jaar ago | 0

Answered
Help with solving a system of equations
Please check carefully if this is correct and if it is what you need: %% Case 1: N = 19 % clc % clear % b = 6; % Vinf = 1...

meer dan een jaar ago | 1

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Answered
How to calculate NDI Index
NDI_new = uint8(rescale(NDI, 0, 255));

meer dan een jaar ago | 0

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