Walter Roberson
Followers: 46
I am currently in the middle of moving, so I am not around very much.
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English
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Top ten contributors whose answers received the most acceptances in 2024
Awarded to Walter Roberson on 02 Jan 2025
Top ten contributors whose answers received the most acceptances in 2023
Awarded to Walter Roberson on 01 Jan 2024
Solve a problem for the first time
Awarded to Walter Roberson on 10 Jun 2017
Publish your first review
Awarded to Walter Roberson on 09 Oct 2019
Top ten contributors whose answers received the most acceptances in 2022
Awarded to Walter Roberson on 01 Jan 2023
Top ten contributors whose answers received the most acceptances in 2021
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Reach 100000 reputation points. Honors the first contributor to reach this milestone, Walter Roberson
Awarded to Walter Roberson on 14 Aug 2020
The contributor whose answers received the most acceptances in 2019
Awarded to Walter Roberson on 01 Jan 2020
The contributor whose answers received the most acceptances in 2018
Awarded to Walter Roberson on 18 Jan 2019
The contributor whose answers received the most acceptances in 2017
Awarded to Walter Roberson on 02 Jan 2018
Contribute at least one answer each month for 36 consecutive months
Awarded to Walter Roberson on 20 Jul 2017
The contributor whose answers received the most acceptances in 2016
Awarded to Walter Roberson on 20 Jul 2017
Feeds
How come fsolve is exceeding evaluation limit?
% Initial guess for the solution x0 = [sym(8487)/sym(10)^3, sym(6330)/sym(10)^12, sym(1149)/sym(10)^3, sym(5837)/sym(10)^3, sym...
alrededor de 8 horas hace | 1
serialport - how to reopen port after handle was lost
These days there is serialportfind
alrededor de 9 horas hace | 0
Why doesn't the subtract function work with 3D DiscreteGeometry in R2024b?
In R2023a, the methods available for DiscreteGeometry are addCell addVertex cellEdges ext...
1 día hace | 0
How to load TreeBagger created and saved in an older version of MATLAB into a newer version?
Warning: Variable 'explainer' originally saved as a shapley cannot be instantiated as an object and will be read in as a uint32....
1 día hace | 1
| aceptada
MI in spin orbit bose bose mixtures
I was able to fix some of the problems, but Omega_plus and Omega_minus just are not defined. L=20; dk=0.1; k=-L/2:dk:L/2-dk; ...
1 día hace | 0
how to get all text written in the command window to show up in a text box in uifigure?
If you can wait until after all of the text has been produced, then use evalc around the computation whose text is to be recorde...
3 días hace | 0
how to change axis font color?
To change the font color while leaving alone the grid lines, see these examples xtickformat('\color{red}%g') %re...
3 días hace | 0
How does MATLAB app designer call external. m functions after packaging into exe?
When you package into exe then external .m that are not packaged as part of the exe, cause an error when they are called. Onl...
4 días hace | 0
extract max and min frequency of a spectrum
You could fft(), and take the first half of the results, and find the last bin such that abs(BIN)>0 . That last bin will corresp...
4 días hace | 0
Passing output from afterEach to variable
This method is fairly clumsy, but in theory it would work. Use a parpool size of 1. Use parfeval() to create a parallel.pool.P...
4 días hace | 1
| aceptada
how to find the function "helper plot fluctuation loss" to plot this image in matlab help?
When you openExample('radar/IntegrationAndFluctuationLossesExample') it will set up a directory for you and cd to that direct...
4 días hace | 0
| aceptada
Taylor's theorem, find approximation for e^-x for x =1 with accuracy of 5 decimals.
Taylor's series involves accumulating the sum of terms. The sum of the n'th derivative of the function divided by n factorial ti...
4 días hace | 0
i want to plot fragility curve stress vrs probability of failure and mean speed vrs probability of failure no of data is 48500
Your failure probability is a scalar. mean speed could be calculated as mean(data.Speed_km_h) but that would be a scalar. Plotti...
5 días hace | 0
Same script in a path folder and the current folder. Which takes priority? (2024a, Ubuntu)
According to https://www.mathworks.com/help/matlab/matlab_prog/function-precedence-order.html 3. Nested functions within the c...
5 días hace | 0
| aceptada
Simplifying symbolic expression to get real of real function in it.
syms x (x^3 + x)/x^2 + 5 real(ans) You can see that if you have a real() call then the Symbolic Toolbox already automatically...
5 días hace | 0
Data not being written in file
Did you remember to fclose() the file?
6 días hace | 0
| aceptada
How to access the certain data Simulink model ?
You can use a Selector block to extract particular columns from simulink signals. https://www.mathworks.com/help/simulink/slref/...
6 días hace | 0
How to Solve a System of Equations for symfun Objects?
Is there a way to define all of the R(s),E(s),G(s),Y(s) as symfun from the start and simultaneously solve eq1 and eq2 directly f...
6 días hace | 0
| aceptada
How to continuously create an array of the latest values of a signal in SIMULINK?
You can use a buffer block https://www.mathworks.com/help/dsp/ref/buffer.html (requires the DSP System Toolbox)
6 días hace | 0
transform table variable into struct variable.
Perhaps use table2struct ? Note that your posted code creates a cell array, U and uses () indexing to try to set U(1) and so on...
7 días hace | 0
| aceptada
How to merge data in mat file?
load pot1 newpot = pot(~arrayfun(@(S)isempty(S.tr), pot)); save('newpot.mat', 'newpot')
8 días hace | 0
Can we download Predictive maintenance toolbox for free, and is it compatible with MATLAB 2017a?
The Predictive Maintenance Toolbox was introduced in R2018a, so it is not compatible with R2017a. It cannot be downloaded for f...
8 días hace | 0
How can show 2D plot of 3 file data analysis and show effect of change ?
S = fileread('ST1.txt'); S = regexprep(S, '\*I', ''); S(1:100) ST1data = cell2mat(textscan(S, '%f %f %f%f')); ST1 = reshap...
8 días hace | 0
How to remove extraneous Matlab-generated vertical lines that connect function values at jump discontinuities?
MATLAB does not do that. What is happening is that when you use plot() on a finite set of data, then where there are places tha...
8 días hace | 1
| aceptada
how to crop a binary mask to remove all black pixels while maintaining the largest area of white pixels?
vertproj = any(YourMask,1); horzproj = any(YourMask,2); minx = find(vertproj,1,'first'); maxx = find(vertproj,1,'last'); min...
8 días hace | 0
Simulink Mathlab Function Block Output Variable Size Array
Insert totalValue = uint8(0); before totalValue = (y3+2);
9 días hace | 0
minimizing with genetic algorithm
y = @(x) (1.002)-((1-exp(-0.00003*x))./(0.00003*(x+1.5)+(0.00063*(1-exp(-0.00003*x))))); fplot(y, [-2, 10]) fplot(y, [-1.5 -...
9 días hace | 0
Can I plot two figures simultaneously but with less data for the second figure?
Well, you can... but it isn't worth the trouble. N1 = 1001; N2 = 20; theta = linspace(0, 2*pi, N1); [~, pi_idx] = min(abs(th...
9 días hace | 0
| aceptada
chiral medium in matlab
The internal code looks like if ~isDielectricSubstrate(obj) feed_x = obj.DefaultFeedLocation(1)+ ...
9 días hace | 0
| aceptada
Install MIDAS Toolbox in Matlab 2024b
Most items installed by the Add-On Explorer do not show up in ver (official MATLAB toolboxes being the exception -- but Support ...
10 días hace | 0
| aceptada
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