Answered
How to solve a 2D PDE with backward Euler?
At line 58, you are trying to access the 11th element of the Number matrix, but its dimensions are 10 x 10, so you get an error....

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Answered
Appending data with different sizes
The easiest way would be the following something like this: a = [1 2 3]; b = [4 5 6 7]; n=size(b,2) a_bis=[a zeros(1,n)]; c...

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Answered
help regarding controllability of input matrix
Is the matrix V completely free ? If you can actually add any input to your system, why don't you simply define C = eye(3) ...

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Answered
I need to view frequency spectrum with 50 kHz, 100 kHz and 150 kHz only of a time a signal (x) with 2000 kHz sampling frequency.How to do ?
Can you give more details about your problem ? Do these answers help you ? https://mathworks.com/matlabcentral/answers/36430-p...

ongeveer een jaar ago | 0

Answered
where is the error ?
In the command line, where you defined v, call the function this way: >> v= [1 2 3 ;4 5 6]; >> mini(v)

ongeveer een jaar ago | 0

Answered
Modbus TCP/IP localhost
This was a firewall issue. Ubuntu has a built-in firewall that one can deactivate using this solution: <https://askubuntu.com/q...

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Answered
Matlab to Python ( dot product and dot divide equivalents )
Please refer to: http://mathesaurus.sourceforge.net/matlab-numpy.html or https://docs.scipy.org/doc/numpy/user/numpy-for-matl...

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Answered
Forced step response of a signal
You can set the initial values of the step using stepDataOptions: <https://mathworks.com/help/control/ref/stepdataoptions.html>...

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Answered
Help with animating a line correctly
Is this what you're looking for: %This for loop is what does the drawing for idx = 1:length(t) figure(1); clf; ...

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Answered
Calling Maple from Matlab
_Maple_ is not a built-in function that you can call in matlab. If you have installed Maple on your computer, you can launch ...

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Question

Modbus TCP/IP localhost
Hi, I would like to set up a modbus communication using TCP/IP. In order to test it, I wanted to set the communication bet...

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answer

Answered
Addition of two unequal matrices
You cannot compute A+B. You can only compute the sum for each column: A+B ans = 2 1 1 1 1 ...

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Answered
find eigenvalues of a very large sparse matrix
Dod you have a look at _eigs_ ? <https://mathworks.com/help/matlab/ref/eigs.html>

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Answered
Verification problem-absolute/relative error
Are you working with floating point numbers? Have a look here: <https://mathworks.com/help/matlab/ref/eq.html#bt2klek-3>

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Answered
Using an existing vector in a .M file
Does this discussion <https://mathworks.com/matlabcentral/answers/1748-storing-user-input-as-a-vector> answer your question ?

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Answered
How to extract a specific value from a loop.
_t_ is your time variable, so you have to use it to test if it's equal to 2seconds. if t==2 % assumes your time units i...

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Solved

Longest run of consecutive numbers
Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

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Solved

Joining Ranges
You are given a n-by-2 matrix. Each row represents a numeric range, e.g. x = [0 5; 10 3; 20 15; 16 19; 25 25] contains...

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Solved

Return a list sorted by number of consecutive occurrences
Inspired by Problem 38 by Cody Team. Given a vector x, return a vector y of the values in x sorted by the number of CONSECUTIVE...

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Solved

Create logical matrix with a specific row and column sums
Given two numbers *|n|* and *|s|*, build an |n-by-n| logical matrix (of only zeros and ones), such that both the row sums and th...

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Solved

Piecewise linear interpolation
Given an Mx2 vector and a row of M-1 integers, output a two column vector that linearly interpolates Y times between each succes...

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Solved

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

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Solved

Some Assembly Required
The input to this function is a matrix of real numbers. Your job is to assemble the rows of the matrix into one large row that ...

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Answered
Plotting a signal between 8 and 15 sec
What is the problem exactly? You have your signal u 3001x1, with a sampling time of 10ms. It means that u(1) is the value of...

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Answered
Binary to decimal - 8 bits at a time
You can try something like this using _bin2dec_ : for i=1:8:numel(binary) decimal=bin2dec(num2str(binary(i:i+7))) ...

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Answered
Compare two folders and write the matching files to the third folder
Have a look at the functions _dir_ and _exist_.

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Answered
I have this error, and I don't know how to solve it.Can someone help me please?
The problem is that _Tx_signal_ is not a vector but a matrix of size 1000 x 1000. From the help of _conv_ function: _C = c...

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Answered
How to design LQR problem for tracking a reference output
You can use the <https://mathworks.com/help/control/ref/lqi.html lqi> function.

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Solved

Pascal's Matrix
Given an integer n &ge; 0, generate the ( _n_+1) &times; ( _n_+1) lower triangular <http://en.wikipedia.org/wiki/Pascal_matrix P...

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Answered
Retrieve data from uitable when user enters data
You should handle the deletion of the table properly as explained here: <https://mathworks.com/matlabcentral/answers/95210-ho...

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