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Dear all, how can I solve the index exceed the number of array problem?
When the water level time is larger than anything in the array then the next element list would be empty and index 1 of it would...

3 days ago | 0

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How to apply function "strrep" to more than 32 substrings?
If you make x a string array with 96 or more elements, then the entire code can be replaced with %{ newIDFFile = regexprep(rea...

3 days ago | 1

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Answered
identify time and position when reach terminal velocity
The odeset looks fine for setting the tolerances. Your code should not be using any formula for terminal velocity given forces,...

3 days ago | 0

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Plotting 3D surface for a variable dependent on 2 variables but the 2 variables are not monotically increasing function
N = 100; xvec = linspace(min(FirstIndependent), max(FirstIndependent), N); yvec = linspace(min(SecondIndependent), max(SecondI...

3 days ago | 0

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Root Finding Newton Method
function [y] = Newton_3397(chuckie,x) syms x You should not be ignoring the input x value. The user is supposed to pass you an...

3 days ago | 0

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Why am I getting this error?
By the way: letters = 'AABBCDDEFGHIJKLMNOOPQRRSTUVWXYZ1234456667889990'; if ind > length(letters) letter = '0'; else ...

3 days ago | 0

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MATLAB2020b Parallel Computing Number of Workers
Hyperthreading does not provide additional computation capacity. What hyperthreading is, is some extra state registers that per...

3 days ago | 1

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Read and writing matrices; need to keep column labels??
% load data set in via user: prompt = 'please enter file: '; filename = input(prompt, 's'); eeg = readtable(filename); [r,...

3 days ago | 0

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How to access data in structures?
fieldnames = fieldnames(structure) fieldInedd = fieldnames{2} informationfromthisfield = structure.(fieldIneed) Notice the ()...

3 days ago | 0

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Audio compression using DCT
M=round(y/framesize); You have a problem there. You use M as a size in the code, but you calculate it based upon the content of...

4 days ago | 2

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Exporting a code from Maple to Matlab
Optimized version of the calculation: t1 = exp(x); t21 = -5 .* t; t3 = exp(t21); t5 = exp((1 + t21)); t4 = ((0 <= t & t <= ...

4 days ago | 1

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I need help for simulink build
You need to install QUARC software from the manufacturer of the mobile robot. https://www.quanser.com/products/quarc-real-time-...

4 days ago | 0

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Simulink Matlab Function Block Error
If you are using 32 bit MATLAB and want to create 32 bit executables, then you can use the lcc32 compiler that is provided with ...

4 days ago | 1

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Error in adding 3 sine waves of different frequencies
>> size(S1) ans = 1 100000 >> size(S2) ans = 1 200000 >> size(S3) ans = 1...

4 days ago | 0

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Storing a Variable from a While Loop
all_x = cell(20, 1); N = 10; %The starting number of randomly generated integers counter = 0; while N <= 200 %200 is the ...

4 days ago | 0

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Can someone help me? I am still new to matlab and can fix the errors that I come across.
I = Ig - Isat.*(exp((V + (I*Rs))/Rp)-1) - (V + (I*Rs))/Rp; %Eq(1) %[...] P = V.*I; V is not defined. I = Ig_Md - Isat_0d.*(e...

4 days ago | 0

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how to save each loop variable in the same vector?
%data set = x n = 24; M = numel(x)-n+1; all_vi = zeros(1,M); all_fi = zeros(1,M); for i = 1:M xi = x(i:i+23); en...

4 days ago | 0

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Answered
Mupad partial time derivative
You substitute s for q(t), so B transforms into s*diff(s,t) . s is constant with respect to t so diff(s,t) is 0 and s*0 is 0 (pr...

4 days ago | 1

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Answered
Not enough memory in editor
Preferences -> General -> Java Heap Memory Can be increased to up to 8 Gigabytes. Note: as of R2020a, the editor will refuse ...

4 days ago | 0

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SOS Making a for loop for multiple combinations
G = findgroups(target); rel32 = splitapply(@minus, ori2, ori3) %if there is exactly one match per target rel32 = splitap...

4 days ago | 0

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An Array of Equations to solve for 1 variable
There are two solutions for each I value. L = sym(3); %Wheelbase in meters% w = sym(1.7); %Track in meters% d = sym(0.25); %l...

4 days ago | 0

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Answered
Error in ODE45 when using ...................... >> [t,x] = ode45(@odefcn,tspan,[0 0]);
[t,x] = ode45(@odefcn,tspan,[0 0]); That is valid syntax. However, your function is relying on the variables a, b, c, and u. M...

4 days ago | 0

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Symbolic integration of cell arrays
It is not possible to directly perform symbolic integration of cell arrays. You can use the code you posted, or you can use Q ...

5 days ago | 0

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Answered
how can i include both linear and logarithmic scales in one plot???
If you just have one line to be plotted and you want one axes to be linear and the other to be log, then you can use semilogx() ...

5 days ago | 0

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Error using setup: too many input arguments
You have psat installed. You need to find the psat settings.m file (in the main PSAT installation directory) and delete it or re...

5 days ago | 0

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In-built Audio Files
If you are on Mac or Linux, go into a shell and cd to the installation directory and find . -depth \( -name \*.wav -o -name \*....

5 days ago | 0

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why does Matlab not expand(abs(a-b)^2) ?
>> a=complex(rand,rand) a = 0.0975404049994095 + 0.278498218867048i >> b=complex(rand,rand) b = ...

5 days ago | 2

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Answered
Error using / (line 65) Inverse model is noncausal because of delays
g=0.8392/(168.555*s+1)*exp(-28.655*s); Provided that you are trying to construct 0.8392 ------------- 168.555*s + 1 with a ...

6 days ago | 0

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Answered
How to solve the error: Input arguments must be convertible to floating-point numbers.
syms x y z t w B; Symbolic variables. Ez = Eo*cos(w*t-B*(x+y)); So Ez involves the symbolic variable B E = [Ex, Ey, Ez]; ...

6 days ago | 2

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how to make a matrix
repmat(reshape(V, 1, 1, []), 2, 2, 1)

6 days ago | 0

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