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I have purchased the Signal Processing Toolbox but still get an error when trying to use a function
Depending exactly how you install the toolbox, situations can arise where a toolbox is installed but the license is not updated....

circa un mese fa | 0

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Make only the highest values of grayscale image transparent
image(BackgroundImage); imageMax = max(YourGrayscaleImage(:)); alphaMask = double(YourGraycaleImage == imageMax); hold on ...

circa un mese fa | 0

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Are functions called in parfor independent from each other
No, there will be a difference. Linear for loop uses a single random number stream (unless you deliberately change this.) parf...

circa un mese fa | 0

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One function is greater than other
Q = @(v) sym(v); syms z real assume(z > exp(1)) % Define the function f = z - Q(802)/Q(10)^2 * log(z) == (Q(3359)/Q(10)^3...

circa un mese fa | 0

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MATLab does not solve for my variable and only solves the root of the equation
syms a H Q x y z b c d e f g h eqn = x + y*a + z*H + b*a^2 + c*H^2 + d*a^3 + e*H^3 + f*a*H + g*a^2*H + h*a*H^2 == Q; solutions...

circa un mese fa | 0

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matlab serialport in s-function error with Undefined function 'write' for input arguments of type 'string'
You do not initialize serialObj within the same scope as the persistent declaration. You end up passing empty serialObj everywhe...

2 mesi fa | 0

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in y axis i want 10^(-2000). can anyone plz help
1e-2000 would underflow to 0. You can only use such a number symbolically... but symbolic numbers cannot be used as limits. Y...

2 mesi fa | 0

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What are the possible reasons for data jumps in the plot?
Q = @(v) sym(v); Pi = Q(pi); A0 = Q(15207)/Q(10)^4; A1 = Q(0853721)/Q(10)^6-Q(1816893)/Q(10)^6*1i; A2 = Q(1); th = ...

2 mesi fa | 0

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Why License Manager Error -9,57 if the username MatLicence/Window is the same?
You have to use the Windows internal username, not the Windows Live email address. https://www.mathworks.com/matlabcentral/answ...

2 mesi fa | 0

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calculate the area of the black colored objectes in a image
stats = regionprops(YOUR_BW_IMAGE, 'Area'); areas = [stats.area]; total_area = sum(areas);

2 mesi fa | 0

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Matlab ODE Solvers - Paramater Question
To pass an additional parameter, use http://www.mathworks.com/help/matlab/math/parameterizing-functions.html However... for the...

2 mesi fa | 0

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Can't read external drives
System Preferences --> Privacy & Security --> Full Disk Access Click on the "+" at the bottom middle . Authenticate. Select /Ap...

2 mesi fa | 0

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Getting arrow key presses in code without any figures
You can potentially use one of the routines from PsychToolbox; https://www.mathworks.com/matlabcentral/answers/143088-real-time-...

2 mesi fa | 0

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"Empty sym" when solving a system of linear equations with different conditions
Sol = solve([eqn1 eqn2 eqn3 eqn4 ... cond1 cond2 cond3 cond4 ... cond_gear5_1 cond_gear5_2 ratio], i) That is a reque...

2 mesi fa | 0

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Can I update my Matlab behavior
In the MATLAB editor, if you start with examplepath = 'this\is\a\path\' and position your cursor at the path part and press re...

2 mesi fa | 1

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Replace certain columns in a structure array
[Data(30:60).Temperature] = deal(20); [Data(61:80).Temperature] = deal(24);

2 mesi fa | 0

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License Error while running Yolov4 object detector
It sounds as if you are configured for multiple license servers, and the license server you normally use does not have a license...

2 mesi fa | 0

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I need a link and password to the MATLAB software accompanying the text Business Finance and Economics with MATLAB
The link to the software is https://www.andersoneconomicgroup.com/Portals/0/Zipped%20Toolbox.zip I do not know what the passw...

2 mesi fa | 0

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Is there a way to use fill with animatedline?
No, animated lines cannot handle fill. Consider instead creating a hgtransform for each tile. To move the individual tiles, set...

2 mesi fa | 0

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How to do I get the standard deviation from an eeg input signal in SImulink?
The instantaneous standard deviation of a signal is 0. Standard deviation normally depends on a complete population -- a comple...

2 mesi fa | 0

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How do I add a column to table?
You can add a new table variable by using either dot notation or the "addvars" function. Dot notation adds new variables to the ...

2 mesi fa | 2

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Can't use conv() after using coeffs()? It works when manually inputting the coefficients but doesn't when it is taken using coeffs
syms s eq1 = 2*s^2 + 3*s - 1; N = coeffs(eq1, 'All'); eq2 = s^3 +6*s^2 + 1; D = coeffs(eq2, 'All'); T = conv( double(N)...

2 mesi fa | 0

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How do I implement a one-second buffer for incoming UDP data?
For real-time operations, you cannot (should not) use dynamic memory allocation. Dynamic memory allocation runs the risk of run...

2 mesi fa | 0

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retrieve mat-file version for v7.0
The difference between -v5 and -v7 has to do with the variety of objects that are stored. If a particular .mat file does not hap...

2 mesi fa | 1

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How to Increase plotting speed
tic L=0.1; a=L/2; v=3e8; f1=1.2e9; f2=4.8e9; f3=10e9; w1=(2*pi*f1); w2=(2*pi*f2); w3=(2*pi*f3); Z01=50; Z02=50; a0...

2 mesi fa | 0

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How to bring in a single channel EEG signal from MATLAB workspace into Simulink?
t = (0:length(YOUR_EEG_SIGNAL)-1) / fs .'; SIGNAL = [t, YOUR_EEG_SIGNAL(:)]; assignin('base', 'SIGNAL', SIGNAL); Now From Wor...

2 mesi fa | 0

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liscence manager error 8
You will not be able to fix the error instantly. https://www.mathworks.com/matlabcentral/answers/100496-why-do-i-receive-licens...

2 mesi fa | 0

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Cross-section (Need help to correct the code or modify it )
atand() with one parameter returns values in the range -90 to +90, not in the range 0 to 90 to 180. No single-parameter atand() ...

2 mesi fa | 0

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Issues with script writing mixed text/numeric data to file as a table
fprintf(fid, '%5.1f %4.1f %4.1f', [CENTIMETERS, KILOGRAMS, BMI] .') fprintf() works by first using up all of th...

2 mesi fa | 0

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User-defined monthly loan payment function issues
M=P*((r/1200)/(1-(1+(r/1200)))^((-12)*N)) 12 1 2 3 4 321 23 2 10 That has a sub-expression (1-(1+(r/1200)))...

2 mesi fa | 0

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