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Aquatris


Last seen: 2 dagen ago |  Active since 2023

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Answered
How to update a function with output from another function?
Here is one way iff the required variables are within the state vector 'y', then you can do: %% change ode45 call [t, y] = ode...

2 dagen ago | 0

Answered
slow drawing of a set of points on a plane
In essence for loop are always slower. So try to vectorize your code whereever possible for efficiency, here is a good read. In ...

2 dagen ago | 0

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Answered
plot magnitude data at location (x,y,z)
Here is one way where you use colors to indicate the magnitude; % random data x = [0:pi/50:10*pi nan]; % nan is added to remov...

3 dagen ago | 0

Answered
Generate the motion (Trajectory) of a sphere (or point) with given velocity value
If you dont care about the actual timing and things, here is one way where the colors of the path indicate the speed and a simpl...

4 dagen ago | 0

Answered
How to generate vector with non-linear spacing?
The answer from another question here: A = 1; B = 5; std = .9; % need to play with this to get desired shape within desired r...

11 dagen ago | 0

Answered
Second Order Laplace solving doesn't work ('Unable to find explicit solution')
Not sure the underlying reason behind it but you are defining the X as a function of s and solve function seems to be having tro...

12 dagen ago | 0

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Answered
How do I solve system of differentials using ode45 and eom functions
You defined a symbolic variable within your ode function, which is a nono if you wanna solve it numerically :D function ds = e...

17 dagen ago | 1

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Answered
Solving with ode45 with a solution dependant variable in the ode
No, you should not do it that way. Instead you should create your function properly in a way that represents the equations. It w...

18 dagen ago | 0

Answered
How to display a color bar in Matlab as shown below
You can call the colorbar function with the desired tick values Z = peaks; contourf(Z) colorbar('ticks',[-6:0.5:8])

19 dagen ago | 1

Answered
Error in for loop: Index exceeds matrix dimensions.
You have essentially made two mistakes: matrix_f only has 6 rows. You setup up your for loop such that k is 1 2 3 4 5 6 . When ...

24 dagen ago | 0

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Answered
Friend Function implementation in MATLAB
You can use the Access List property. Here is more explanation. Here also.

24 dagen ago | 0

Answered
how to do rising and falling edge in single signal using signal builder..?
Click on Signal->ReplaceWith or New->Square and play with the points. Alternatively, click on Signal->Custom-> enter your time...

25 dagen ago | 1

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Answered
how to make task in simulink
You can specify sample time of each block seperatly. Here is more information and how to do it for different blocks, subsystems ...

25 dagen ago | 0

Answered
How to loop through cell array and apply script to each double?
You can use the cellfun function, where you use your script as the function. Example: a = {1:3, 200:205, 10:12}; new_a = cell...

30 dagen ago | 0

Solved


Find MPG of Lightest Cars
The file cars.mat contains a table named cars with variables Model, MPG, Horsepower, Weight, and Acceleration for several classi...

ongeveer een maand ago

Solved


Rescale Scores
Each column (except last) of matrix X contains students' scores in a course assignment or a test. The last column has a weighted...

ongeveer een maand ago

Solved


Crop an Image
A grayscale image is represented as a matrix in MATLAB. Each matrix element represents a pixel in the image. An element value re...

ongeveer een maand ago

Solved


Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....

ongeveer een maand ago

Answered
Unable to obtain double precision from symbolic value
You need the vpa function x = 2; a = sym(1/3); f = a*sin(2*pi*x) fVpa = vpa(f,10)

ongeveer een maand ago | 1

| accepted

Answered
Help with contour plot
You actually do have 5 lines but they are on top of each other thats why you do not see them. So your Z matrix for k1(1) and k1(...

ongeveer een maand ago | 0

| accepted

Answered
count number of elements for each slice of a vector
Here is one simple way: A = [2 1; 3 1; 4 2; 5 2; 6 2; 7 1; 8 1; 7 1; 5 2; 6 2]; ...

ongeveer 2 maanden ago | 0

| accepted

Answered
First cell in a string array is empty, how to replace this?
The issue is you are not initiating and filling the mode1_status matrix properly. Your initial mode1_status matrix is a 1x1 matr...

ongeveer 2 maanden ago | 0

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Answered
Which MATLAB license should I buy as a reseacher working in an NGO?
The best way to know is by contacting the sales directly, say it is a nonprofit NGO and for research. They might offer you eithe...

ongeveer 2 maanden ago | 2

Answered
Matlab optimization - variables to satisfy L1 norm
You create a nonlinear constraint functio and give it as an argument to the fmincon. [x,fval,exitflag,output]=fmincon(@(x)costF...

ongeveer 2 maanden ago | 1

Solved


Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

ongeveer 2 maanden ago

Solved


Pizza!
Given a circular pizza with radius z and thickness a, return the pizza's volume. [ z is first input argument.] Non-scored bonus...

ongeveer 2 maanden ago

Answered
How to draw a Nyquist plot while avoiding the pole at the origin
I dont think the nyquist plots looks exactly like you draw by hand. You can set the axis limits to make the nyquist plot visib...

ongeveer 2 maanden ago | 0

Answered
How to draw a graph like the image attached below in MATLAB
You can also use countourf function; % random data from countour example x = linspace(-2*pi,2*pi); y = linspace(0,4*pi); [X,...

ongeveer 2 maanden ago | 0

Answered
Insufficient number of input parameters.
The calculate_gain_sfunc requires an input. You called it without any inputs. calculate_gain_sfunc % WRONG way to run the func...

ongeveer 2 maanden ago | 0

Answered
Hi All. Just wondering why answer to (i) is not 4.9e+4. an why answer to (iii) is not (9x)/2 or 4.5 x. Many thanks. Brian
Your value in (i) for f(1.2) is 49020.80113638172, so when you round to 1 decimal, it becomes 49020.8 which in engineering notat...

ongeveer 2 maanden ago | 1

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