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Solving matrix differential equation
You try to take the derivative of x1 with respect to x2. You cannot meaningfully take the derivative of a function with respect ...

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Missing input in the argument
K=@(t,p,Z,d,r1) (p*Z-d-exp(-t))*r1; K is defined needing 5 input parameters. V(i) = r0 + ((1-a)./M)*integral(K,0,P(i))+ (a./M...

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using sparse matrix and vpa function simultaneously
Sparse matrices are implemented for double precision, and for logical. As of R2025a Pre-Release they are also implemented for si...

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Issue while using bostemp
There are two possibilities here: You might not have The Signal Processing Toolbox installed You might have MATLAB configured...

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Why am I receiving syntax errors for a file that I know can compile fine?
You could try using typedef struct SOMENAMEGOESHERE { ... } FUNCTION_1_REQUEST_T; instead of typedef struct { ... } FUNCT...

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How Can a sym Vector have Elements that are Vectors Themselves?
I think it is a bug that simplify() returns this form. I suspect that the result of the simplify() is a piecewise() constructi...

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simulink real to IQ
Simulink does not have an IQ datatype, so it is difficult to know what you are asking for. Simulink has a real + imaginary to c...

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I am working on an assignment for class I can't figure out how to round the values in the table to two decimal places. Can anyone point out what I am missing?
Use format bank before displaying the table. All of the values in the table happen to have only a single decimal place of pre...

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NI USB-6451 not supported in Data Acquisition Toolbox
The USB-6451 is not listed as supported on https://www.mathworks.com/hardware-support/nidaqmx.html It is hypothetically possib...

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Help. Cannot get tables to work.
Most likely you have a third-party height.m function. Use which -all height to check

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Vectorizing to speed up integration
You can improve speed a little by using temp = int(int(dK,u,0,u,hold=true),v,0,v,hold=true) dk = release(temp); However, usin...

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Deleting stored intermediate values in ODE15s
LastN = 500; options = odeset('JPattern', j, RelTol=1e-7,AbsTol=1e-7); out = ode15s(@(t,C)PDEs(input,t,C), [0, 60*(input.SimTi...

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Adding vectors of different sizes... works now? Can this be suppressed?
There is no way to suppress implicit expansion. Consider by the way that 3 + eye(4) also breaks the rules of matrix addition,...

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uicontrol not working inside a function
uicontrol('Style', 'pushbutton', 'String', 'Chiudi', ... 'Position', [20 20 50 20], ... 'Callback', 'isAnimating=false...

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simulink is not working license checkout failed warning is shown
There are a few possibilities here: If you have an individual license, it is possible that you somehow installed Simulink but y...

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how to input a function as a parameter of a function
Use @fun as the parameter. For example X0 = fMin1D(.5, 17, 32, 1e-10, 0.8, @fun)

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How to extract a string from a list and use it with dot notation
stringListUpper = ["ABC","DEF","GHI"]; stringListLower = ["abc","def","ghi"]; for i = 1:3 for j = 1:3 AssignTo(s...

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Ability to timestamp vicon nexus for reaction time
For work of this kind, we recommend Psychtoolbox http://psychtoolbox.org/ which has extensive MATLAB compatibility, and is desig...

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"isfield" for hidden field in optimoptions
optimoptions returns on object of class optim.options.Fsolve not a struct. You need to use isprop(options,'JacobPattern') How...

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Plotting second derivatives of magnetic fields.generated by Helmholtz Coils
n = sqrt(v(1^2+v(2)^2+v(3)^2)); should be n = sqrt(v(1)^2+v(2)^2+v(3)^2);

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Numerical integration methods for surface integral
Your integral is with respect to S. Nothing being integrated depends on S. Therefore the integral is constant times the differ...

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How many c0mputer I can istall and activate Matlab and how many run Matlab at same time
To do that, you would need one of: Concurrent license sized for 2 concurrent licenses Standard/Commecial/Professional individu...

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Having a .mat file store an image to call to a tab in app designer
new_image_variable = 'Schematic'; % Save the updated data to the .mat file save('name.mat', 'new_image_variable', '-append');...

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How do I process and display a 10 and 12 bit image in matlab?
There are three primary ways of storing 12 bit images: as plain uint16() integer values in the range 0 to 4095. The "left" 4 b...

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Generate C code from matlab code issue
Code cannot be generated for uigetdir because the C standard library does not define any directory operations. Directory ope...

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How to know which elements of a symbolic vector are real?
c(imag(c)==0)

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Help using NI-845x SPI and DIO in MatLab
spi_obj = spi('ni845x', 0, 0);

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Getting relative time from two events identified as absolute time
elapsed_as_duration = datetime(E5) - datetime(E0); Now you can ask things such as seconds(elasped_as_duration)

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Check if the value for a field in a struct exists
A=struct('a', {}) isempty(A) isempty(A) || isempty(A.a)

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Is is possible to redirect the output of a system command that calls another program?
HDL Coder does not appear to be supported on Mac. On Linux: Redirect output (possibly stderr) to a named pipe. Read from the n...

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