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
Statistics
RANK
1
of 295,712
REPUTATION
136,994
CONTRIBUTIONS
37 Questions
60,527 Answers
ANSWER ACCEPTANCE
48.65%
VOTES RECEIVED
18,540
RANK
of 20,274
REPUTATION
N/A
AVERAGE RATING
0.00
CONTRIBUTIONS
0 Files
DOWNLOADS
0
ALL TIME DOWNLOADS
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Top ten contributors whose answers received the most acceptances in 2023
Awarded to Walter Roberson on 01 Jan 2024
Top ten contributors whose answers received the most acceptances in 2022
Awarded to Walter Roberson on 01 Jan 2023
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 2021
Awarded to Walter Roberson on 01 Jan 2022
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
The contributor whose answers received the most acceptances in 2015
Awarded to Walter Roberson on 20 Jul 2017
Feeds
Simpson method, ezplot (with strings)
Calculate dt first. Then calculate Q.*c.*dt. Now use https://www.mathworks.com/matlabcentral/fileexchange/25754-simpson-s-rule-f...
22 hours ago | 0
How do I implement this kind of an allpass filter?
you cannot implement those equations. e(n) is defined in terms of d(n) d(n) is defined in terms of e(n - something) Sub...
1 day ago | 0
Matlab to solve finite difference for Ode
S = 'aa = 1; bb = 2; alpha = 1; beta = 2; n=29; % h = (bb-aa)/(n+1); h=0.1' idx = find(S>128) S(idx) S(idx)+0 Your co...
1 day ago | 0
Event triggered control using ode45
Proceed as described in https://www.mathworks.com/matlabcentral/answers/2169908-while-in-ode45#answer_1552013 %assuming r_k is...
1 day ago | 0
| accepted
Change Stacking Order of Plots
pdeplot(results.Mesh, XYData=results.NodalSolution, ZData=results.NodalSolution, ColorMap="jet"); view(2) Those lines imply th...
3 days ago | 0
| accepted
hi, it says "Unable to perform assignment because the size of the left side is 1-by-3 and the size of the right side is 1-by-2" and the error is at line 96 in my code
Node(1,:) = [0,0]; Node(2,:) = [3,3]; Node(3,:) = [6,6]; Node(4,:) = [9,9]; Node(5,:) = [18,0]; Node(6,:) = [9,0]; That cr...
3 days ago | 0
What *really* is the Mathworks Service Host?
Mathworks Service Host is simply Mathworks rebranding of Omni Comsumer Product's ED-209 Artificial Intelligence system. Does it...
3 days ago | 0
What *really* is the Mathworks Service Host?
Mathworks Service Host is simply Mathworks rebranding of Cyberdyne Systems "Skynet", a revolutionary Artificial Intelligence sys...
3 days ago | 0
What *really* is the Mathworks Service Host?
Mathworks Service Host is simply Mathworks rebranding of Microsoft's "Recall" (also known as AI Explorer). The scope of Recall,...
3 days ago | 1
control random number generator in async programming
parpool are defined to seed random number generators differently. See https://www.mathworks.com/help/parallel-computing/control-...
3 days ago | 1
How to get 1 as the highest order coefficient in a polynomial expression?
syms p K_s0 Phi_V Phi_G s K_p K_x0 T_i real; Phi_V = -p*(K_p/K_x0)*(1 + 1/(s*T_i))*1/s; eqn1 = p == K_s0*(Phi_V + Phi_G); eqn...
3 days ago | 0
The line on the legend are not showing
What you describe sounds as if either X_1 or Y_1 are scalars. In such a case, requesting . or o will draw markers, but there wou...
3 days ago | 0
| accepted
Plotting z = f(x, y) when (x, y, z) values are known
Use https://www.mathworks.com/help/pde/ug/decsg.html to create a decomposed geometry. Calculate the temperature values on the r...
4 days ago | 0
| accepted
why do I get a negative numbers???
opts = optimoptions('fsolve', 'MaxFunctionEvaluations', 1e6, 'MaxIterations', 1e6); Guess = linspace(0,.001, 23); Answers = fs...
4 days ago | 0
TI Radar Toolbox with DCA1000EVM Connection - Continuous error occurs when attempting to connect with an Ethernet cable
Your ipconfig shows that you have configured the local IP address of the second interface as 192.168.33.30 . However, 192.168.33...
4 days ago | 0
how to extract only digits from an image
Use ocr passing the option 'CharacterSet', with value '0123456789'
4 days ago | 0
How do I extract data from a structure using a for loop?
fieldnames = fieldnames(YourDataStructure); num_fields = length(fieldnames); last_field_values = cell(num_fields,1); for FI...
4 days ago | 0
is there a way for a creation of variables for machine learning inside a loop from a dataset of waves
data_names = who('-file', 'sub-036_task-eyesclosed_eeg.set', '-regexp', '^data_\d+$'); for DNI = 1:length(data_names) this...
4 days ago | 0
I have an error using walsh. It says
walsh() is not the name of any Mathworks supplied function. walsh() is the name of one File Exchange contribution, https://www....
4 days ago | 0
Matlab GA parallel computing
fid = fopen('Design_Variables.inp', 'w+'); % Ansys APDL reads this %... ansys_input = 'ANSYS_APDL.dat'; output_file = 'out_fi...
4 days ago | 0
Solving ODE with explicit equations
if and(t >= 0.05, t < 1.5) k = 0.05; elseif and(t < 0.05, t >= 1.5) k = 0; end Ug = n + k * V1; That code only def...
4 days ago | 1
Fitting and predicting from 3D data
idx = find(Output(Var1,:,:) == OutputValue); [~, var2, var3] = idx2sub(size(Output), idx); Except that comparing using == is n...
4 days ago | 0
Getting the evaluation progress of the gather command
You need to turn diary on, and access the diary file while it is still being written. As you will need code to do that, and the ...
4 days ago | 0
| accepted
syntax of this line tmp = cellfun(@(tbl) tbl(:, cellstr(dataVariables(ct))), trainDataNormalized, 'UniformOutput', false);% in RUL tutorial
@(tbl) tbl(:, cellstr(dataVariables(ct))) That syntax outputs the handle of an anonymous function. The anonymous function acce...
5 days ago | 0
An error occurred while running the simulation and the simulation was terminated
You have a MATLAB Function block in the lower left. It has s0 as input and ds0 as output. The 4th line of code for it is ds0=(s...
5 days ago | 0
How can I run a system-level simulation with 802.11be, in which I can use MRU?
https://www.mathworks.com/help/wlan/gs/802-11-standards-supported-by-wlan-toolbox-for-phy-modeling.html 802.11be™ support is cu...
5 days ago | 0
How to modify the mesh generated from meshgrid to create a rectangular void in the middle of the mesh
You might be better off taking a different approach. You might be better off decomposing a geometry If you follow the steps fro...
5 days ago | 0
Big Tiff Grayscale image looks unsharp/ Grayvalue is not shown properly
When imshow is asked to display an image that is larger than the figure size, it displays a downscale version of the image. The ...
5 days ago | 0
Import 2d image to 3d plot
The major problem with mixing 3d plots with images, is that image() is a strictly 2D object -- images disappear quickly when til...
6 days ago | 0
| accepted
Concerned that matlabFunction( ), when converting from symbolic to numerical, changes the sizes of matrices and vectors,
The expression is creating a 1 x 9 vector and reshape() it to 3 x 3. It may be a bit clumsy compared to directly generating a 3 ...
6 days ago | 1
You can also select a web site from the following list
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom(English)
Asia Pacific
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)