Aquatris

Last seen: 5 days 前 | 自 2023 起处于活动状态

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writematrix: how to get formatted txt-output?
Use 'tab' delimiter option instead of single space. M = [100 0 4500;0 1 38.29;1 1 38.22]; writematrix(round(M,2),'file.txt',...

8 days 前 | 0

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Simulate recursive function in simulink
I did not care about the dimensions at all while creating the simulink model so some adjustment might be necessary but this is o...

12 days 前 | 0

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Add NaN in the first row of a table
Assuming all your entries are numeric, since you want to assign NaN, here is one way; % create dummy table Age = [38;43;38;40;...

13 days 前 | 0

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Error in displaying the whole matrix
Ther eis probably a 1e6 at the top of the display. You can do 'format bank' to mitigate this if you want or any other format opt...

1 month 前 | 0

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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...

1 month 前 | 0

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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 ...

1 month 前 | 0

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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...

1 month 前 | 0

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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...

1 month 前 | 0

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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...

2 months 前 | 0

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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...

2 months 前 | 0

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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...

2 months 前 | 1

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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...

2 months 前 | 0

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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])

2 months 前 | 1

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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 ...

2 months 前 | 0

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

2 months 前 | 0

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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...

2 months 前 | 1

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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 ...

2 months 前 | 0

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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...

2 months 前 | 0

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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...

2 months 前

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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...

2 months 前

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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...

2 months 前

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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,....

2 months 前

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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)

3 months 前 | 1

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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(...

3 months 前 | 0

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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]; ...

3 months 前 | 0

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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...

3 months 前 | 0

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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...

3 months 前 | 2

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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...

3 months 前 | 1

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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...

3 months 前

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

3 months 前

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