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Function to utilize user input on a GUI system?
If you want to ask such a question by a GUI dialog, you can use the function inputdlg. For instance: m = inputdlg('Please provi...

7 meses hace | 0

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generating random numbers only 2 numbers with percentage
The function rand generates random numbers uniformely distributed between 0 and 1. Hence, it is enough to set to 1 numbers the v...

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How do I create of a mesh of complete circle?
With Matlab PDE toolbox it is possible to define a circle and mesh it. You can do it by using the GUI, or by issuing the command...

7 meses hace | 0

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How Can i solve this problem
Hi. The problem seems to be (among others) in your definition of t. Basically, t is empty; perhaps you wanted to write T-ts as u...

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ADD LATeX legends and labels in MATLAB figures
Hi. You must add 'interpreter', 'latex': figure plot(rand(20, 3), 'o-'); legend({'Mean Energy Consumption', 'Mean of $u_{i}$ ...

8 meses hace | 1

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3 dataset plot in single dimension plane
Method #2: use circles of different size to represent the value of c. I hope at least it will inspire you. c = [0.001 0.002 0.0...

8 meses hace | 0

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3 dataset plot in single dimension plane
Hi Suraj, you can use mesh, surf, contour and many others functions (see https://fr.mathworks.com/help/matlab/visualize/represen...

8 meses hace | 0

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Failure in initial objective function evaluation. in fgoalattain
Hi Li, the error is that funn requires three arguments, whereas fgoalattain needs a function with a single argument. To fix t...

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How do I get rid of space above figure?
Hi Tobias, I had a similar problem (but I save images in .png format). I can propose the method I solved it: I save the image...

8 meses hace | 0

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ODE solver vs discrete integration
Hi Stacy. Basically, you seem to be willing to solve your system of ODE by using the method of forward Euler. If so, there is ...

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colour code plotted data according to column
Simply like that, if I correclty understand your question: % Generate some data p = linspace(0, 2*pi, 20000); data = zeros(nu...

8 meses hace | 1

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I want to extract w and x from this code, but unfortunately i cant and it gives me only 1 answer.
Hi Alireza, I'm afraid that the fact your code returns only one value is the last of your problems. More specifically, you pro...

8 meses hace | 0

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Plot the function combining an exponential function and a step function
Hi Nick, Your program seems correct. Perhaps you need to adapt the range over which the graphic is plotted (the default range i...

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How to fix 'Index exceeds the number of array elements. Index must not exceed 1.'?
By a visual inspection of your code, one sees that at line 11 you assign to variables T1_old .. T3_old the value of T1(i) .. T3(...

8 meses hace | 0

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Get index of an x, y data point via user selection in a plot.
I would do like that (thanks to KSSV, I didn't know functions scatter and knnsearch): function demo x = rand(10,1); y = r...

8 meses hace | 0

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get the minimum and maximum element from two vectors.
Dear Shouze, as your question looks like an assignment I'll provide only some hints, but I will not write any code in your place...

8 meses hace | 1

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Derivating a variable with respect to other vars
In my opinion, you can do it analytically: syms Umin a1 tau = sqrt( (2*Umin-Umin^3+Umin^4+2*Umin^2-8) / (2*a1*Umin^3*(Umin^2+4...

8 meses hace | 0

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Numerical Integration on Matlab
Hi. I would say no: you forget to multiply I2 and J2 by the respective constants I2_c and J2_c. That being said, these function...

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I'm not sure how to relate a counter
Hi Saskiaa, if the question is just "how to have j = 1, 2, 3 ... when n = 0, 1, 2 ..." it is enough to write the loop with respe...

8 meses hace | 1

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Subtraction between a matrix and a column vector
Hi. If the matrix and the vector have compatible size (= like you mentioned), it is enough to use the minus operator: A = rand(...

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Summation of certain range of entries/numbers from a large array
Hi Raashid, if you know the range over which you need to compute the sum, it is enough to do like that: A = rand(2807, 1); p...

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I want my function to return -1 when the file doesn't open.
Hi. You must return just after assigning the value -1 to charnum. If you call the function error... well, you get an error messa...

8 meses hace | 1

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Parallelization of SVD on research clusters
Hi Kamil, perhaps this answer will help you: https://fr.mathworks.com/matlabcentral/answers/247506-undefined-function-svd-for-d...

8 meses hace | 0

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Steepest Descent Method with Stopping Criteria using MATLAB
Hi. I don't know it steepest descend is part of any of the Matlab toolbox (anyway, you can find a version here: https://fr.mathw...

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Curve in matlab plotting
Dear Amy, if I understand correctly your question, you can use semilogy instead of plot: data = [ ... 57 78.2 165.1 ; ...

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How would I write a function that finds the closest point from a list of coordinates?
Hi Joshua, you can try this: x = [3, 1, 2, 2]; y = [5, 2, 4, 6]; current_site = 4; site_list = [1, 3]; [chosen_site, d] = s...

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How can I use feval, linespace and int()?
You can do like that: syms x; ex = int(x^2); s = @(x) subs(ex, 'x', x); numPoints = 200; xvec = linspace(1,10,numPoints);...

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how to use for loop in equation
Hi Shiv, up to my understanding you want to execute a kind of parametric study, basing on a parameter A (and perhaps in future...

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Why the solution is higher than the initial conditions in a model without heatsource?
Dear YL, In my opinion which is observed in the figure is just a uniform temperature T = 50, plus a numerical noise, which may...

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How to solve trigonometric equation x*cos(x)+sin(x)=0 with function fsolve?
Hi Attho, since your function depends on one varialbe only, you can solve more easily with fzero: fun = @(x) x.*cos(x)+sin(x)...

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