Answered
How do I use an "if" statement to determine the highest input value?
Try help if

ungefär ett år ago | 0

Answered
How to plot all figures in only one plot?
Here's one simple way: x=-pi:0.1:pi; c=-6:5; figure hold on for i=1:length(c) y=c(i)*x.^(2)+4*x+2; plot(x,y) end...

ungefär ett år ago | 0

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Answered
Error in Hermite Polynomial
In line for j = 0:i-1 you have j starting at zero. Matlab's indices start at 1, so the following line should have X(j+1) not ...

mer än ett år ago | 0

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Matlab code not computing
The use of square brackets in the scatter function is not the only problem! Are you looking for something like this? p=-1; z=...

mer än ett år ago | 0

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Answered
how to plot the path of circular beam oscillation welding?
Like this? A=1; f=50; vf=0.02; time = linspace(0,100,500); x0 = vf*time; theta = 2*pi*f*time; x=A*cos(theta)+x0; y=A*sin...

mer än ett år ago | 0

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how to change the direction of the airfoil
Change contourf(real(J),imag(J),imag(f),v2); %%%%% fill(real(zair),imag(zair),'k') to contourf(-real(J),imag(J),imag(f),v2);...

mer än ett år ago | 0

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Answered
How to use 5 function coupled each other using ODE45? it is possible?
Better like this: MM0 = [10, 0, 0, 0, 0]; tspan = [0 100]; [t, MM] = ode15s(@mymode, tspan,MM0); M1 = MM(:,1); M2 = MM(:...

mer än ett år ago | 0

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convert a column matrix with many rows into multiple column of equal rows
Try the reshape function.

mer än ett år ago | 0

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"Not enough Imput arguments" ERROR
You haven't included J as an input argument to function Feedback_Ven_STEP.

mer än ett år ago | 0

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Using polyfit in two arrays to detrend data.
polyfit just returns the coefficients of the polynomial. You need to use them in polyval to calculate data values.

mer än ett år ago | 2

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Implicit solution using pdepe 1D advection diffusion reaction equation
I think you've overcomplicated the situation! Should be more like the following (which you should check very carefully, as I di...

mer än ett år ago | 0

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I want to plot the vector field on F=x i+ j
Do you mean like this? [x,y] = meshgrid(-3:.15:3,-3:.15:3); Fx = x; Fy = ones(size(y)); %%%%%%%%%%% figure; quiver(x,y,Fx,F...

mer än ett år ago | 0

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Answered
i have two set of data for temperature measurements which vary depends on each other. the variation may be divided into three portions. how can we seperate these portions
Here's a possible way (assumes the data is already in the workspace): dT2 = gradient(T2); minval = min(dT2(Time<2.5)); ix = f...

mer än ett år ago | 0

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How to surf very small values keeping the same ratio?
Multiply them all by 1e4.

mer än ett år ago | 0

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whats preventing my code from generating the proper results
I don't know anythng about the physics of your scenario, but are you sure you are calculating NLOS_LOWER_BOUND correctly? The f...

mer än ett år ago | 0

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Finding the optimal solution for a data with two variables
Here's a possible approach (I've used relative errors as the values of the two columns are an order of magnitude different): % ...

mer än ett år ago | 0

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Answered
Using loop to sum value of an array and summation
Here's one way: J=[1 2 3 4 5 6 1 2 3 4 5 6]; step = 3; ix = 1:step:numel(J); for i = 1:numel(ix) p(i) = sum(J(ix(i)...

mer än ett år ago | 1

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Answered
Solving a system of inequalities using an eigenfunction and if, else.
Your function needs to be more like this, for example. Set values of x outside the function, call the function with these value...

mer än ett år ago | 0

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Answered
Почему появилась ошибка?
Seems overcomplicated for a numerical solution! How about simply f = @(x) x - 5 - 1/3*cos(2*x+1) + 2*x./(2+x.^2); g = @(x) x ...

mer än ett år ago | 0

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How to write 2D heat conduction exact solution for Inf n?
Your term sinh(n*pi*x/L) should be sin(n*pi*x/L). See the following code (which can be made more efficient!): L = 1; H = 2; ...

mer än ett år ago | 1

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Answered
Help with Riccati equation
You haven't defined B (in the function definition)

mer än ett år ago | 0

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How to create a time function and make a line rotate at a certain angular speed?
Do you mean something like this? r2_length = 2; tend = 10; % s dt = 0.1; t = 0:dt:tend; omega = 1; % rad/s theta = omega*t...

mer än ett år ago | 0

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Cannot get integral function to work for two limits
Try this %Enthalpy datum conditions (Kelvin) Ti=(25+273.15); %Input temperature (Kelvin) T1=(183+273.15); %Output tem...

mer än ett år ago | 0

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I have some errors in executing the following code, can anyone help me please?
You have no initial guesses for y(5) and y(7). And what about y(6)?

mer än ett år ago | 0

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How can I plot a diagram with 12-15 different colors
Specify the colors with RGB triplets. doc Color

mer än ett år ago | 0

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This code give me an error of Index exceeds array bounds.
More like this? m=60; g=9.81; k=80; m_2=10; m_1=15; h=100; w=15; t=1:10:100; x = zeros(1,numel(t)); for i=1:numel(t) ...

mer än ett år ago | 0

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Why does MATLAB grader refuses to get my answer with the double integral evaluation problem?
As follows Oops! I did the sum incorrectly! Should have been like this: % box side length delta = 0.01; % mid box points...

mer än ett år ago | 0

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initial condition vector longer than ODE vector?
Do it like this: a=2; b=5; % v0 is now set to 10 v0=10; % Using a,b to determine rest of variables R=10*a; C=0.0001...

mer än ett år ago | 1

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Answered
Can some one fix this code? I am unable to understand this code? Though fixing one problem another problem is arising ! please help!
In the following line: G = (randn(Np,Mtot)+1j*randn(Np,Mtot))/sqrt(2); % When i=1, G is 1x20, but H is 20x2 so the following l...

mer än ett år ago | 0

Answered
Connect all dots I polarplot
Like this? r=[10:36:360 10]; r = r/360*2*pi; s=[5,3.5,5,4,4,3.5,4,4.2,4.7,4, 5]; polarplot(r,s,'-x')

mer än ett år ago | 0