Walter Roberson

Last seen: Today | Con actividad desde 2011

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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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Error trying to start Simulink from m-file.
It sounds as if the block diagram 'Gelenkmodell' is configured with an InitFcn that invokes Reibkennlinie_festlegen but that Re...

alrededor de 10 horas hace | 0

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Please assist to resolve "magaa and mag2a" codes problems; probably FUN and fsolve, not properly sets. The mag2 has to generate 12 (Qy-variable) questions by for-end. Thanks
function [Qy, FUN] = MAGa(Qy0) tic, n=12; pipes=n; dia=n; LP=4; cCc=7; HLD=-0; ee=0.04; vs=1.00001*10^-6; ...

alrededor de 10 horas hace | 0

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I keep getting a “cannot convert double value “…” to a handle. Does anybody know how I can fix my code in order for this to go away
Historically, up to R2014a, it was the case that graphics handles were returned as double precision numbers. This allowed constr...

alrededor de 10 horas hace | 0

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How to use integral when limits are anonymous functions
Your problem is unsolvable (in the form stated) You cannot use integral() with symbolic limits: integral() is strictly a numeri...

1 día hace | 0

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Are Windows machine for desktop real time and speedgoat using simulink real time uses same kind of processors aechitecture?
Speedgoat runs on Intel x64 class of processors, it appears to me. For different systems, I see reference to Atom processors or ...

1 día hace | 0

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How to save a figure as a geotiff
geotiffwrite from the Mapping Toolbox But I don't know what it means to save an "entire" surface, as distinct from the points t...

1 día hace | 0

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Why are some of my functions 'Undefined' in my standalone executable compiled from MATLAB source and pcode files?
In https://www.mathworks.com/matlabcentral/answers/1579108-how-do-i-use-and-s-flag-for-compiling-a-matlab-app#comment_2779289 ...

1 día hace | 0

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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

2 días hace | 0

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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...

2 días hace | 0

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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 ...

2 días hace | 0

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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...

3 días hace | 0

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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...

3 días hace | 1

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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...

3 días hace | 0

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

3 días hace | 0

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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 ...

3 días hace | 0

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

3 días hace | 0

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

3 días hace | 0

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

4 días hace | 0

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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...

4 días hace | 0

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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...

4 días hace | 0

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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...

4 días hace | 0

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

4 días hace | 0

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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...

4 días hace | 0

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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,...

5 días hace | 0

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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...

5 días hace | 0

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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...

5 días hace | 0

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

5 días hace | 0

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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 = %.....

6 días hace | 0

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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...

6 días hace | 0

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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...

6 días hace | 0

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