Answered
What is the "Service and Date" ?
Minjae, the student version is a *perpetual* license, which means you can use the software indefinitely. <http://www.mathworks.c...
What is the "Service and Date" ?
Minjae, the student version is a *perpetual* license, which means you can use the software indefinitely. <http://www.mathworks.c...
10 years ago | 0
Answered
How to add text label to plot referenced to the second y-axis
Mark, what about something like x = 0:0.01:10; y1 = exp(-0.05*x).*sin(x); y2 = exp(-0.5*x).*sin(10*x); [ax, h1, h2]...
How to add text label to plot referenced to the second y-axis
Mark, what about something like x = 0:0.01:10; y1 = exp(-0.05*x).*sin(x); y2 = exp(-0.5*x).*sin(10*x); [ax, h1, h2]...
10 years ago | 0
Answered
Problem with eval and symbolic inequation
Anna, try syms t joelho = ((0.15*sin(5*pi*t - pi/2) + 0.15)*heaviside(-t - 0.4) + ... (0.53625*sin(10*pi*t/3 + ...
Problem with eval and symbolic inequation
Anna, try syms t joelho = ((0.15*sin(5*pi*t - pi/2) + 0.15)*heaviside(-t - 0.4) + ... (0.53625*sin(10*pi*t/3 + ...
10 years ago | 0
Answered
How to display two non-consecutive column vectors
Use b = m(:,[1,3])
How to display two non-consecutive column vectors
Use b = m(:,[1,3])
10 years ago | 20
| accepted
Answered
How do I animate a point/particle move with certain velocity in a circular path?
Vinaykanth, you just need to replace the angle |a| by something like |om*t|, where |om| represents the angular velocity. cr...
How do I animate a point/particle move with certain velocity in a circular path?
Vinaykanth, you just need to replace the angle |a| by something like |om*t|, where |om| represents the angular velocity. cr...
10 years ago | 0
Answered
if and if else command is the conditional statement is correct while writing it is range?
Anas, if (T >= 300) && (T <= 900) c1=1.6; c2=1.7; elseif (T > 900) && (T <= 1500) C1=1.8; c2=1.9; else ...
if and if else command is the conditional statement is correct while writing it is range?
Anas, if (T >= 300) && (T <= 900) c1=1.6; c2=1.7; elseif (T > 900) && (T <= 1500) C1=1.8; c2=1.9; else ...
10 years ago | 1
| accepted
Answered
I want to see how long it takes to run a model
Fernando, I assume you are talking about Simulink models. There is a functionality called profiler that might help you. See the ...
I want to see how long it takes to run a model
Fernando, I assume you are talking about Simulink models. There is a functionality called profiler that might help you. See the ...
10 years ago | 1
| accepted
Answered
Error using corrplot function
Stephan, |corrplot| requires the Econometrics Toolbox. To see/learn if you have access, check out <https://www.mathworks.com/mat...
Error using corrplot function
Stephan, |corrplot| requires the Econometrics Toolbox. To see/learn if you have access, check out <https://www.mathworks.com/mat...
10 years ago | 1
| accepted
Answered
How can I correctly substitute symbolic variables with decimal numbers like 2.543342? The subs function can't do it properly...
Are you referring to the |C(i)|? How about C(i) = vpa(subs(C(i),D(i)))
How can I correctly substitute symbolic variables with decimal numbers like 2.543342? The subs function can't do it properly...
Are you referring to the |C(i)|? How about C(i) = vpa(subs(C(i),D(i)))
10 years ago | 1
Answered
How to set default value of a slider in GUI?
D B, please attach the entire code (see paper clip). A couple of comments: * There is at least one round, closing bracket mis...
How to set default value of a slider in GUI?
D B, please attach the entire code (see paper clip). A couple of comments: * There is at least one round, closing bracket mis...
10 years ago | 1
Answered
error using zeros,integers problem
Why not simply round the numbers, e.g. A = zeros(1 + round(x), 1 + round(y));
error using zeros,integers problem
Why not simply round the numbers, e.g. A = zeros(1 + round(x), 1 + round(y));
10 years ago | 1
| accepted
Answered
Examples for model predictive control missing?
Anthony, the example requires the <http://www.mathworks.com/products/mpc/ Model Predictive Control Toolbox>. I just checked and ...
Examples for model predictive control missing?
Anthony, the example requires the <http://www.mathworks.com/products/mpc/ Model Predictive Control Toolbox>. I just checked and ...
10 years ago | 0
| accepted
Answered
Undefined function or variable 'fminsearchbnd'.
Mohammed, did you add the folder you downloaded to the MATLAB search path? In the MATLAB editor go to the |Home| tab in the t...
Undefined function or variable 'fminsearchbnd'.
Mohammed, did you add the folder you downloaded to the MATLAB search path? In the MATLAB editor go to the |Home| tab in the t...
10 years ago | 0
Answered
Hello I have a question about matrix
Andres, use for example B = A(any(isnan(A),2),:) C = A(~any(isnan(A),2),:)
Hello I have a question about matrix
Andres, use for example B = A(any(isnan(A),2),:) C = A(~any(isnan(A),2),:)
10 years ago | 1
| accepted
Answered
how do i get the same look as when i started in matlab
In the |Home| toolstrip go to the |Layout| dropdown and select |Default|.
how do i get the same look as when i started in matlab
In the |Home| toolstrip go to the |Layout| dropdown and select |Default|.
10 years ago | 1
Answered
How do i delete an exact cell from a cell-matrix?
Christoph, simply use round brackets instead a = {1,2,3}; a(2) = []
How do i delete an exact cell from a cell-matrix?
Christoph, simply use round brackets instead a = {1,2,3}; a(2) = []
10 years ago | 1
| accepted
Answered
implicite differenciation to find slope of curve at apoint
Sita, how about syms x y(x) f(x,y) f = x^2+y^2-1 == 0; df = diff(f,x)
implicite differenciation to find slope of curve at apoint
Sita, how about syms x y(x) f(x,y) f = x^2+y^2-1 == 0; df = diff(f,x)
10 years ago | 0
Answered
How to create an inputdlg with a portion of the default text already selected?
David, do you mean something like prompt = {'Enter matrix size:','Enter colormap name:'}; dlg_title = 'Input'; num_lines...
How to create an inputdlg with a portion of the default text already selected?
David, do you mean something like prompt = {'Enter matrix size:','Enter colormap name:'}; dlg_title = 'Input'; num_lines...
10 years ago | 0
Answered
Cell array, string concatenation
Danny, I would simply use an |if-else| for that, combined with indexing function [str] = shortCat(in1, in2) s1 = size(in...
Cell array, string concatenation
Danny, I would simply use an |if-else| for that, combined with indexing function [str] = shortCat(in1, in2) s1 = size(in...
10 years ago | 1
| accepted
Answered
sort a one dimensional array ascend and descend
Hi Leo, you can always use sort([1,3,2],'ascend') and even sort([1,3,2]) As for your question: there might be scen...
sort a one dimensional array ascend and descend
Hi Leo, you can always use sort([1,3,2],'ascend') and even sort([1,3,2]) As for your question: there might be scen...
10 years ago | 0
Answered
Subplot in loop just plotting the first y value?
Marcus, add a hold on after the |plot| command.
Subplot in loop just plotting the first y value?
Marcus, add a hold on after the |plot| command.
10 years ago | 0
Answered
Merge tables with duplicates
Hi Jonas, why not rename the columns of one of the tables, or even both? E.g. |CO21| and |CO22|. See this <https://www.mathworks...
Merge tables with duplicates
Hi Jonas, why not rename the columns of one of the tables, or even both? E.g. |CO21| and |CO22|. See this <https://www.mathworks...
10 years ago | 0
Submitted
Projectile app
Analyze the projectile motion with quadratic drag and in 2D
10 years ago | 1182 downloads |
Submitted
Physical modeling in academia: the rotary pendulum with low-cost hardware
Model, analyze and deploy the rotary pendulum system
10 years ago | 3554 downloads |
Answered
Method ode45 applied to set of n 1st order ODE
Hi Nicola, use the below to get started. Essentially you want to define the differential equations symbolically and then convert...
Method ode45 applied to set of n 1st order ODE
Hi Nicola, use the below to get started. Essentially you want to define the differential equations symbolically and then convert...
10 years ago | 0
Answered
Error "()-indexing must appear last in an index expression" in symbolic Matlab Toolbox
Paco, check out the <http://de.mathworks.com/matlabcentral/fileexchange/49796-euler-lagrange-tool-package Euler-Lagrange tool> o...
Error "()-indexing must appear last in an index expression" in symbolic Matlab Toolbox
Paco, check out the <http://de.mathworks.com/matlabcentral/fileexchange/49796-euler-lagrange-tool-package Euler-Lagrange tool> o...
10 years ago | 0
Answered
Taylor Series Summation Too Large
You need add up the |y(i)|. In other words, use k = k + y(i);
Taylor Series Summation Too Large
You need add up the |y(i)|. In other words, use k = k + y(i);
10 years ago | 1
| accepted
Answered
a a a a a
Kenneth, check out and run this: g = 9.81; L = linspace(1,10,14); theta_0 = 30; for t = 0:0.1:60 %time...
a a a a a
Kenneth, check out and run this: g = 9.81; L = linspace(1,10,14); theta_0 = 30; for t = 0:0.1:60 %time...
10 years ago | 0
Answered
While Loop for Percent Error Not Ending
Madi, how about x = input('Enter a scalar value for x: '); n = 0; e = 3; k = 0; while e>2 dk = (-1)^n*x^...
While Loop for Percent Error Not Ending
Madi, how about x = input('Enter a scalar value for x: '); n = 0; e = 3; k = 0; while e>2 dk = (-1)^n*x^...
10 years ago | 1
| accepted
Answered
PID controller design: How to plot control signal?
Matthias, for this simple configuration with |C| and |P| in the feed-forward path and unity feedback you can do the following: ...
PID controller design: How to plot control signal?
Matthias, for this simple configuration with |C| and |P| in the feed-forward path and unity feedback you can do the following: ...
10 years ago | 0