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How can I create a Graph with specific coordinates?
When you call plot on your graph you can specify the X, Y, and Z coordinates of the nodes. See the "Custom Graph Node Coordinate...

6 years ago | 0

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findpeak for every column of a matrix
Consider using islocalmax with the dim input argument.

6 years ago | 0

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Why is it the answer from MATLAB is different from the other solving software? Where did I go wrong?
Don't name your variable cond. That already has a meaning in MATLAB. When I used cond1 in the dsolve call rather than cond I re...

6 years ago | 1

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"Function MEMORY is not available on this platform."
As stated in the Limitations section on the documentation page for the memory function, this function is only supported on Micro...

6 years ago | 0

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Answered
Undefined function 'workspacefunc' — How to change search path back after accidentally changing it
Use restoredefaultpath.

6 years ago | 0

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New install: Undefined function 'isstring' for input arguments of type 'char'.
I think you have a fileparts.m that you downloaded or wrote on your path ahead of the one included in MATLAB. When I opened rele...

6 years ago | 0

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Answered
How can I get only the coefficients that are multiplied by the powers of x? Example: 5x^2 + 9x + 12y + 3z >>> [5, 9]
syms x y z F = 5*x^2+9*x+5*y+3*z [C, T] = coeffs(F, x) C(logical(T ~= 1)) The logical call in the last line may look redunda...

6 years ago | 0

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what is the process of getting campus wide license?
Go to the end of this page. Click the Get Started button and fill in the information requested by the form on that page. Alterna...

6 years ago | 0

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Output truncated. Text exceeds maximum line length of 25,000 characters for Command Window display.
Since I'm guessing you don't really want to read through pages and pages of the result of that command, suppress the display by ...

6 years ago | 0

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too many input arguments in my code!
For your first question, let's split out the innermost function call on that line of code. xr = complex(zeros(fix(waveform.Samp...

6 years ago | 0

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Convert cell array datetime format to double array in HH:MM:SS format
Do you want the numbers as a double array (and if so, what does that double array represent? Seconds since a specific time? Seco...

6 years ago | 0

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R2020a Activation Client for Windows
See this Answers post. If following the steps in that post doesn't resolve the problem, please contact Technical Support using t...

6 years ago | 0

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Colormap editor window size is huge and cannot be resized bug
If you can reproduce this behavior, please contact Technical Support using the telephone icon in the upper-right corner of this ...

6 years ago | 0

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Unable to retrieve the product
Please send the full and exact text of the error message to Technical Support using the telephone icon in the upper-right corner...

6 years ago | 0

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ode45 problems -- not getting expected solution
K = 3*G*mE/R^5; It's been a while since I've studied any physics, but this looks odd to me. RE = 6378.137e3 ; ...

6 years ago | 0

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addpoints error "Value must be a handle"
Guard your addpoints call with a check to make sure the animatedline handle still isvalid. L = animatedline; axis([0 360 -1 1]...

6 years ago | 0

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How Can I Solve NaN Output Problem
As Roger Jestes stated, if any element of P is exactly 0, you compute 0*(-log(0)) which is 0*inf which results in a NaN. This is...

6 years ago | 0

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"Warning: Name is nonexistent or not a directory"
See this Answers post about the warning.

6 years ago | 0

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encrypt an Matlab application standalone ?
From the documentation for MATLAB Compiler: "All MATLAB files in the deployable archive are encrypted using the Advanced Encrypt...

6 years ago | 0

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subclass properties to superclass
As written you don't have a class hierarchy. You have four completely independent classes. If you want one of your classes to be...

6 years ago | 0

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Predict function doesn't work in standalone Matlab application
My suspicion is that you're bringing the TreeBagger object into your application by calling load on a MAT-file containing the ob...

6 years ago | 0

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How can I concatenate a "datetime" column to a matrix of numbers?
You cannot concatenate together data of types datetime and double without converting the datetime array to double or the double ...

6 years ago | 0

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Answered
Plotting an array of dates on the x-axis
Use datetime. x = {'31-May-2019 11:37:29' '31-May-2019 11:45:25' '22-Jul-2019 18:05:55' '22-Jul-2019 18:06:31' '24-Jul-2019...

6 years ago | 0

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Generate the same result using random number generator
If you think calling rng inside the loop somehow makes the numbers "more random", it doesn't as stated in the Note on this docum...

6 years ago | 0

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what is the source code of awgn function?
The awgn function is implemented as a MATLAB function file in Communications Toolbox. If you have this toolbox installed, you ca...

6 years ago | 0

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Why Global Optimization toolbox is codenamed "gads"?
When the toolbox was first introduced it was called the Genetic Algorithm and Direct Search Toolbox. It was renamed in release R...

6 years ago | 2

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Generation of random numbers in batches
The way to do what you're asking is to record the state of the random number generator. You can't really "work backwards". >> r...

6 years ago | 1

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Plot 2D-histogram for X and Y
In addition to histogram2 which Image Analyst suggested, take a look at the heatmap function. I think showing a heatmap of the d...

6 years ago | 1

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Using Python >2.7 on MAC
According to the Release Notes support for Python 3.7 was added in release R2019a. It doesn't indicate Python 3.8 is supported a...

6 years ago | 0

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Eig(A) returns long fractional answer instead of a single number
If the symbolic expression doesn't contain a symbolic variable and you're okay with approximating it in double precision, call d...

6 years ago | 0