Walter Roberson

Last seen: 2 giorni fa | Attivo dal 2011

I do not do free private consulting. If you want to bring my attention to something, send a link to the MATLAB Answers location. I am currently caught up to T0099119; if you are waiting on a reply from me for an older issue, please send me a reminder.

Programming Languages:
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English

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Risposto
Textualizing VPA array with compose() seems to be broken?
compose with symbolic parameters is the function composition operation, not an operation for producing text

1 giorno fa | 0

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How to Generate Subscripted Arrays in Live Scripts
You cannot get a formatted output of When you have an assignment such as Z_a = sym('z', [1 3]) then the display never form...

2 giorni fa | 0

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Raspberry Pi 5 Setup - MATLAB Support Package
In R2021b, https://www.mathworks.com/help/releases/R2021b/supportpkg/raspberrypiio/ug/install-support-for-raspberry-pi-hardware....

5 giorni fa | 0

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It is showing error tht switch expression must be a scalar or a character vector.
[net_ga, ~] = ga(@(x)train_neural_network(x, inputs, targets, hiddenLayerSize), net.numWeightElements, ga_opts); You cannot pas...

8 giorni fa | 0

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Error during contour plot
the first parameter to contourf is the x data, which corresponds to *columns*. the second parameter to contourf is y data which ...

10 giorni fa | 0

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How can I run multiple symbolic functions simultaneously
In order to run three symbolic functions simultaneously, you can use a background pool and parfeval() the execution of each of t...

14 giorni fa | 0

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Fastest way of opening a text file and converting it to a matrix?
If your file happens to be just a rectangular block of numbers, with either blank or comma between them, then the fastest approa...

17 giorni fa | 0

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Is MATLAB 100% reliable? Do the users need to modify it according to their usage? I need this for my presentation in class. Thank you!
MATLAB has not undergone formal proof of correctness, so it is not 100% reliable. (There are not many mathematical software p...

18 giorni fa | 0

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How do I delete bytes from the end of a binary file?
Unfortunately MATLAB does not support any truncation operations for files.

19 giorni fa | 0

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ERROR during opening file in matlab2021b
You need to rename or delete your Documents\MATLAB\length.m file, as it is interfering with calling MATLAB's built-in length fun...

19 giorni fa | 0

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I want to download Matlab 2019or 2021 or 2020 for my macOs monterey 12.6
If the dropdown is stuck at R2024a then you are not logged in as a licensed MATLAB user. (Or possibly you are a student user an...

19 giorni fa | 0

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How can I implement the Matlab code(Not Simulink) to the Parrot Mambo Drone?
You would need to use something like Embedded Coder for this. You will not be able to take advantage of anything in the support ...

23 giorni fa | 0

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I have the R2023a Matlab file but the command window script is in R2023b and R2024a so how could I open it in the R2023a version
You do not need to do anything special. .m files are plain text files, and so are fully compatible for opening between release...

23 giorni fa | 0

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I got Inf when calculating 13959^475, how can I solve this problem?
c=13959; mod(sym(c)^475, 20711) powermod(c, 475, 20711) which powermod powermod() needs the symbolic toolbox

23 giorni fa | 0

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I could not display all the legends related to the plotted bars
When y is an array, then one legend entry is created for each column of y When y is a vector, then one legend entry total is cr...

23 giorni fa | 0

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How can I find the FFT of a time series when the samples are not equally spaced?
These days you use nufft

23 giorni fa | 0

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warning all the time, don't know what is wrong
The 0^n and 0^(m-1) occur because there are not constraints on m and n, so there is the possibility that 0^0 is being generated,...

24 giorni fa | 0

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How to import multiple csv files into a single appropriate data structure for processing and plotting
Use outerjoin

24 giorni fa | 0

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Is there a MATLAB's supercomputer the registered user can use to run numerical simulations?
You can use Amazon Web Services, or Azure https://www.mathworks.com/solutions/cloud.html

24 giorni fa | 1

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How can I simulate an ultrasonic sensor in combination with 4 MEMS microphones
Depending on the exact MEMS device, you will need to connect the MEMS to either an I2C or a digital input pin, of a device such ...

25 giorni fa | 0

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Failure in initial objective function evaluation. LSQNONLIN cannot continue.
%%%% code for biggest astroid possible %%% This example shows how to do the inverse kinematics for a 2 link manipulator and do ...

25 giorni fa | 0

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Plot multiple maps with transparency using raster data
% load the 3-D data load var_slice.mat load lat.mat load lon.mat % plot for K = 1 : size(var_s...

25 giorni fa | 1

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Error using horzcat Dimensions of arrays being concatenated are not consistent
test = readtable('test.csv'); col_test = [(double(test.u_id(:))), test.score(:)]; %remove 1st entry col_test_update = col_t...

25 giorni fa | 0

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Use for loop to assign zeros function to a variable size array
Nz = 200; number = 4; IC = zeros(number, Nz*2);

25 giorni fa | 0

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How to create a series of separate tiff files?
Your filename includes a colon . colon is not a valid character in a filename for Windows (other than for drive letter) or MacOS...

26 giorni fa | 0

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estgeotform2d Not all transformType arguments are available?
You are looking at the R2024a documentation, but you are using R2023b. (That and the fact that the R2024a documentation misses ...

26 giorni fa | 1

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Risposto
error using importONNXNetwork, importONNXNetwork cannot be called from compiled applications.
The issue is that you are not permitted to call importONNXNetwork in a compiled application. You have to break the code into tw...

26 giorni fa | 0

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Get UI object name
No. You are working with handles, and there are multiple names for the same handle. You can chase the Parent property to get the...

26 giorni fa | 0

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my code is saying aren't matching on line 130-132
N=A'*A; C=A'*Y; Kh=N/C; N will be 6 x 6. C will be 6 x 1. The / operator requires that the matrices have the sa...

26 giorni fa | 0

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How to implement new Latex Font in matlab?
There is no way (documented) to add latex fonts to most of MATLAB. There used to be an obscure way it could be done, but that wa...

27 giorni fa | 0

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