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Walter Roberson


Last seen: Today |  Attivo dal 2011

Followers: 6   Following: 0

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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
Loading hex values from a file vs executing .m file that contains same values
It's a bug. It is processing all d and D as if they were e

circa un'ora fa | 0

Risposto
How do I set a read-only class to a specific value
No, there is not. And if there was a way, setting the NumBytesAvailable would confuse the system because it would either lose tr...

circa un'ora fa | 0

Risposto
Why I am not able to open openExample('simscapefluids/ElectricVehicleThermalManagementExample') ?
If you are using an older version of MATLAB, you might need to use sscfluids_ev_thermal_management The example was renamed in ...

circa un'ora fa | 0

Risposto
HDL Coder Error: HDL code generation does not support variable-size matrix type.
temp_slice(1:16-b+1) = temp(b:16,b); % You do not declare temp_slice before use, so you are growing it within a loop, which...

circa 16 ore fa | 0

Risposto
running matlab exe file results in "Too many input arguments. MATLAB:TooManyInputs error"
You need function main_file(varargin) When you compile an executable, command line arguments are passed as parameters to the m...

circa 24 ore fa | 1

Risposto
Excel headers with symbols
You have to either code the symbols as character constants or else code the unicode to create the symbols. C = [Tag + "_" + L...

1 giorno fa | 0

| accettato

Risposto
How do I use my data set in an equation?
lb = mean(lm,1); formula = log(lb./lm);

1 giorno fa | 0

Risposto
Received this error, not sure how to fix
M=1:2:11; N=1:2:11; those are length 6 for i=1:length(M) for j=1:length(N) for mi=1:i for ni=1+j ...

1 giorno fa | 0

Risposto
Create contour plot from scatter plot
See https://www.mathworks.com/matlabcentral/fileexchange/38858-contour-plot-for-scattered-data

1 giorno fa | 0

Risposto
Can function [s,h] = silhouette(X, clust, distance, varargin) be run using parfor (parallel computation)?
Sorry, you cannot accelerate it using parallel computation.

1 giorno fa | 0

Risposto
error in concatenating cells
ft_epoch = cell2mat(reshape(ftData728178E.trial, 1, 1, [])); However, if what you are already doing creates NaN then it means...

2 giorni fa | 0

Risposto
What does it mean "/Multiple" after variable name in *.mat file?
The .mat file has been created by an external program not using the official Application Programming Interface. The variable nam...

2 giorni fa | 0

Risposto
Support for NVIDIA RTX A1000
The RTX A1000 has compute capacity 8.6 according to several sites I check. As such, the Parallel Computing Toolbox should be ab...

2 giorni fa | 0

| accettato

Risposto
Error in AWGN Using Integers or scalar doubles
lenna = imread('lenna.png'); the result is almost certainly a uint8 matrix. lenna_gray = rgb2gray(lenna); rgb2gray() of a uin...

2 giorni fa | 0

Risposto
how to convert text file as it was written .m file to call functions?
SS = fileread(NAME_OF_FILE); eval(SS)

2 giorni fa | 0

Risposto
Error using lassoglm>glmProcessData
If you are passing in Weights, at least one weight must be positive. Otherwise: you need at least one row of X to contain finit...

2 giorni fa | 0

Risposto
not enough input arguments
You are trying to run the function by pressing the green Run button. When you run the function by pressing the green Run button,...

3 giorni fa | 0

Risposto
How to run all the image with format jpg in folder? and save into folder?
dinfo = dir('*.jpg'); filenames = fullfile({dinfo.folder}, {dinfo.name}); nfiles = length(filenames); magnificationFactor = 1...

3 giorni fa | 0

| accettato

Risposto
Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.
The output of predict(Model2,TeDat_r) will be a vector with the same number of rows as TeDat_r has. But TeDat_r is undefined her...

3 giorni fa | 0

Risposto
volume calculation from the DelaunayTri(x,y,z) function
DT = DelaunayTri(x,y,z); [~, Volume] = convexhull(DT);

3 giorni fa | 0

Risposto
Data fiting in Matlab
You have a missing ) in Ypluss . I had to guess about where it goes. y_data = %... U_data = %... B_data = %... mu_data = %.....

4 giorni fa | 0

| accettato

Risposto
How to get map information from jp2 images ?
You need to run an external program that reads EXIF information from the file... and hope that the information is recorded in th...

4 giorni fa | 0

Risposto
How to use Matlab to get georeferencing information of a JP2 image?
You need to run an external program that reads EXIF information from the file... and hope that the information is recorded in th...

4 giorni fa | 0

Risposto
Stop an app designer callback thread like the debugger does?
"It is evident that whenever the user clicks a button in an app designer app, the callback is called in a new thread." No, the ...

4 giorni fa | 0

Risposto
Warning: Variable appears to change size on every loop iteration (within a script). Consider preallocating for speed.
power = zeros(k, 3); cst = zeros(k, 4); before the while loop.

4 giorni fa | 0

Risposto
can image tiff convert to grayscale
zipname = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/1674421/sample.zip'; tfile = fullfile(tempdir(), 'sam...

4 giorni fa | 0

| accettato

Risposto
automatic change in variable's value during optimisation
You do not do that. It is a truism that during any one call to the optimization routine, that given any particular set of trial ...

4 giorni fa | 0

| accettato

Risposto
How would I properly go about creating this function?
l = 70*12; %length maxHeight = 12; %maximum height of beam maxWidth = 10; %maximum width of beam minHeight ...

4 giorni fa | 1

| accettato

Risposto
wait for several system calls to finish
You have to use taskmgr (Windows) or ps (MacOS or Linux) to detect whether the processes are still alive. Note: If you are usin...

4 giorni fa | 0

| accettato

Risposto
How to use enviwrite in matlab?
A compatible envirwrite is at https://github.com/akayasse/ENVI-read-and-write-for-MATLAB

4 giorni fa | 0

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