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**Content Feed**

How to plot with bar3 plot in MATLAB?

Check the code below, Hope it helps clear variables, close all B = [86, 82, 80]; B2 = [91, 88, 85]; B3 = [98, 95, 89]; ...

1 month ago | 1

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How to reduce the size of legend in a fig file?

You can try playing with the 'location' optional input, for example using legend('blabla1','blabla2','Location','bestoutside') ...

1 month ago | 0

Convert german numbers from excel to matlab (change comma versus point)

You may try to use readtable to import your data. It reads excel files and has the option 'DecimalSeparator' that can be set to ...

2 months ago | 1

| accepted

Create multiple copies of one file in multiple directories with different names

Try this. Note: the file A.txt must be in the current folder % data N = 10; dirName = 'Folder'; fileName = 'A'; % loop ...

2 months ago | 0

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How to rotating a stl object

You shoud translate the points p before the rotation and then move them back If R is your rotation matrix and the center of rot...

2 months ago | 0

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Very tricky:Manipulation with complex array

Following @Paul suggestion % original vector X = [4, 1, 1, 3, 8, 12]; % reshape to have 2xN vector W = reshape(X,2,[]); ...

2 months ago | 0

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Minimal-code to get axes limits of log-log plots, but using gscatter

You can remove the negative part of the axis before setting the log scale set(gca,'XLim',[0 max(xlim)],'YLim',[0 max(ylim)]); ...

6 months ago | 0

How to plot Temperature vs Efficiency curve using For loop and Linspace?

I have commented your plots to avoid moltiple figures % numebr of temperatures nT = 100; % temperature vector T = linspace(2...

6 months ago | 1

| accepted

Question

Calculation of consistent initial conditions for ODE

(minor edit) Hi everyone, I have written wrapper functions calling MATLAB's ODE solvers. Specifically, my problems are DAEs wi...

6 months ago | 1 answer | 0

### 1

answerHow to find same unique in two different size arrays?

Use ismember % data x=[1 22 22 3 8 19]; y=[22 10 19 35]; % engine [iii,jjj] = ismember(y(:),x(:)); countCommon = su...

6 months ago | 0

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Having trouble using for loops to create a matrix

I reproduce the result of the picture, because the question is not clear. a = 25 ; b = 5 ; c = (2*a)/b - 1 ; % do not use mi...

6 months ago | 0

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How to plot a function

You may use fplot figure, hold on fplot(@(x)x.^-3,[1 1e5]) fplot(@(x)x.^-2.8,[1 1e5]) % use bi-logaritmic scale set(gca,'...

6 months ago | 0

Ax = 0 with 2 values of x known

The post is old but the question arises many times, so I post here my solution. It is a generalization of @Matt J solution. Sup...

6 months ago | 0

Looking for visualization method to present finite difference numerical solution in 2D

You may use the low-level patch function. Since I don't have your data, please find below a self-consistent example showing the ...

9 months ago | 0

smooth step function with rise time

My colleague Sofia have found a paper [1] where authors report the analytic approximation of the piece-wise linear step function...

1 year ago | 1

| accepted

Question

smooth step function with rise time

Hi everyone, I know this question is more related to math than Matlab, but I know there are many gurus out there who can easily...

1 year ago | 3 answers | 1

### 3

answersHow can I calculate the sum of the absolute error?

Please check the code below. clear all, close all % model F = @(c,x)c(1)+c(2)*x+c(3)*(x.^2-1); % data xk = [-2 -1 0 1 ...

1 year ago | 1

| accepted

Drawing a rotating circle on a sphere

The code should be self-explicative [X,Y,Z] = sphere; % figure figure, hold on axis equal, view([1 1 1]); % sphere wit...

1 year ago | 0

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How can you solve a system of second order differential equation, which is not time, but length and radius dependent?

This is not an ODE but a PDE. you should have a look at pdepe

1 year ago | 2

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We have a column vector and a row vector both of same lengths. How to use sum function to get element wise sum of two vectors and final answer display in row vector

vect3 = vect1.'+vect2 If you want to be sure of the element by element sum, regardles the shape of the two vectors (row or colu...

1 year ago | 0

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How to randomly change element of matrix?

You can use linear indexing % your matrix A = rand(10,100); % create the folder mkdir('storage'); % loop for i = 1:100...

1 year ago | 2

How to create a series of circle by using a specific radius in cartesian?

Try something like this % anonymous function to plot a circle given the center coordinates and the % radius plotcircle = @(x,...

1 year ago | 0

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Converting Euler ODE to the MATLAB code

f is an anonymous function f = @(t,y)[-2*y(1)+y(2)+15*cos(t); 2*y(1)-y(2)]; note that your script is not correct, since t is t...

1 year ago | 1

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How to call a variable matrix from one script to another script

I am not sure I have understtod correctly your problem. I give it a try. I would add an extra layer using an anonymous function...

1 year ago | 1

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How to use ~= operator as constraint function?

You may have a look here or here

1 year ago | 0

How to compare two time signals with different amount of samples?

Use interp1 to resample your vector(s) in order to have the same length clear variables, close all % time vector t1 = 0:1/1...

1 year ago | 1

solve efficiently sparse large linear system of equations

I would let the backslash operator work on this matrix sol = L\f; Can you share the original matrix to make other attempts?

1 year ago | 0

how to use lsqnonlin to solve conditional equation

The following code should be self explainatory. In the opposite case, simply ask clear all, close all % some dummy params va...

1 year ago | 0

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