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Compute the Dedekind psi function
Write a function to compute the Dedekind psi function. The values for n = 1, 2, 3, 4, 5, and 6 are 1, 3, 4, 6, 6, and 12.

11 months ago

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PMSM DRIVE EXAMPLE: where are the model's variables located?
@Stefano. The variables appearing in the base workspace is calculated from the PreloadFcn callback function in the PMSM model. Y...

12 months ago | 0

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Squeeze-and-Excitation-Inception Architecture for 1D-CNN in MATLAB: Input Data Format Specification and Dimension Matching Issues Between Modules
@dachen wang. For the first issue, the documentation of convolution1dLayer states that the desired input format of convolution1d...

12 months ago | 0

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How to open 2023 models in 2025 version
@Tope Roseline. As indicated by the prompt message, the old model established in R2023 has obsolete simscape blocks which are no...

12 months ago | 0

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Unable to use structName.?ClassName for VideoWriter class
I think the options.?ClassName syntax is not supported within arguments block. You should specify each name-value pair individua...

1 year ago | 0

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how can I simplify this code?
function [idx,pairs,scan] = Two_Ended_Search_2(x,target) idx = find(x==target); n = length(x); LR = min(idx-1,n-i...

1 year ago | 0

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Issues creating error bar for bar figure
The problem lies in the variable Names is string array, which is not supported by errorbar function. You can use categorical fun...

1 year ago | 0

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Representing an orifice whose length is greater than the orifice diamter using Simscape Fluids (IL)
I think you can realize such a nozzle using both Pipe (IL) block and Orifice (IL) block. For example, you can connect orifice bl...

1 year ago | 1

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Cumulative Count
Given a row vector of integers with repeating values (with all repeating values occuring in a single continuous run), create an ...

1 year ago

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Multiply real numbers to get the smallest integers
Write a function that takes a vector of real numbers and multiplies them by a factor to produce the integers with the smallest a...

1 year ago

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SVD to a matrix subset (rows)
I find there is a svdappend function for calculating SVD of matrix incrementally, such as from SVD of A to SVD of [A,D] or [A;D]...

1 year ago | 0

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find powers of two
find the unique, non-repeating, powers of 2 that sum to a given non-zero integer, n example: n = 23 result = [1 2 4 16] ...

1 year ago

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Why does this error occur? Error using cwt>parseinputs (line 510) Invalid number of scalar input arguments. Error in cwt (line 297) fbcell = parseinputs(Norig,TTable,varar
You do not need to pass scales argument explicitly. The scales argument is excluded of cwt function's signature. The minimum and...

1 year ago | 0

Question

How to simulate electro-hydraulic actuator system with hydraulic oil thermal effect in Simscape
I want to simulate hydraulic actuator with hydraulic oil thermal effect use Simscape. I find there is an example model Close...

1 year ago | 1 answer | 0

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Unexpected results using SVD to separate components that make up a function
As far as I konw, the SVD of a matrix P is equal to the summation of rank-1 components. Since the matrix is not rank-1, I th...

1 year ago | 1

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How does the type of solver (fixed vs variable step) affect reinforcement learning in Simulink environment?
You can use Simulink Debug Functionality to step through the simulation and examine the output of agent.

1 year ago | 0

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How to patch the area under curve for a polarplot?
There is a similar question in https://ww2.mathworks.cn/matlabcentral/answers/451422-how-to-use-patch-fill-on-a-polarplot, this ...

1 year ago | 0

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Is my CNN Correct
You can use analyzeNetwork fucntion to obtain more details of your neural network layers = [ sequenceInputLayer(1)...

1 year ago | 0

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Check Bertrand-Chebyshev's theorem about prime numbers
Historical context Bertrand's postulate, also later known as Chebyshev's theorem, is a very important theorem in number theory ...

1 year ago

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Check p = 6n +/- 1, the generic formula for odd prime numbers greater than 3
Problem statement For all odd prime number p greater than 3, there exists a positive integer n, such that p = 6n +/- 1 : ...

1 year ago

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Vectorizing DAE with strong State Dependance Mass matrix
The Vectorized option in odeset means that your DAEs can be writen as , apparently your DAEs can not be expressed as separable f...

1 year ago | 0

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Create an extra row in a table that show the means of all columns (but without any extra headings)
params = ["ROI_L";"ROI_C";"ROI_R"]; FWHMX = [3.09;3.14;3.36]; FWHMY = [3.00;2.92;2.88]; FWHM2D = [3.05;3.03;3.12]; CenInt ...

1 year ago | 0

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How to write a timetable to excel with rowtimes as dates without times?
You can use "InputFormat" option to specify the date format m = (1:3).'; dates = datetime(2025,m,15,"InputFormat","dd-MM-yyyy"...

1 year ago | 0

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Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

1 year ago

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trainnet not openning the plot's window and get stuck.
You can check if you have setted trainingOptions with Plots=none. If the training options are correctly setted, maybe the issue ...

1 year ago | 1

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Oh Zero Zero Zero!!!
Hello all, So you have to find the largest section of zeros in a vector and then find the length of those zeros and there start...

1 year ago

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Wheatstone bridge
Determine if a set of resistors maintain Wheatstone bridge equilibrium

1 year ago

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ICFP 2024 Programming Contest June 28 thru July 1
This is to announce the annual ICFP programming contest for 2024. The ICFP 2024 homepage link is ICFP 2024 . Registration will...

1 year ago

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Given a matrix, swap the 2nd & 3rd columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

1 year ago

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Put Two 1D matrices into one 1D matrix
Example: If input a = [1 2 3 4 5]; input b = [10 9 8 7 6]; then output will be, y_correct = [1 10 2 9 3 8 4 7 5...

1 year ago