Walter Roberson
Followers: 39
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 294,641
REPUTATION
136,636
CONTRIBUTIONS
37 Questions
60,346 Answers
ANSWER ACCEPTANCE
48.65%
VOTES RECEIVED
18,476
RANK
of 20,133
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
Can "Pause on Errors" be enabled by a script, or set as the default?
dbstop if error It is sometimes useful to use dbstop if caught error However, it turns out that caught errors are expected in...
3 hours ago | 1
| accepted
How to process cwt in chunks?
since I have thousands of chunks, the data, once combined, does not look smooth and might have artifacts Consider: if you proce...
4 hours ago | 0
How to go through each splits of a set?
dec2bin(0:2^N-1) is pretty short and is fairly efficient. N=10; X = dec2bin(0:2^N-1); partA = arrayfun(@(row) find(X(row,:)==...
4 hours ago | 2
expanded matrix wont be bigger than 8 by 8
unique_elements = unique(element); nodemax = numel(unique_elements) nodemax is 8. K_global = zeros(nodemax, nodemax); You in...
1 day ago | 0
Problem with ploting involving function handle
sym ii That is equivalent to ans = sym('ii'); which creates the symbolic symbol ii but throws away the reference to the sym...
2 days ago | 0
Need help plotting these 'Time-Series Graphs' in the 'Chaotic attractor' for loop
Your first for j = 1:NT and your for mm = 1:Ntrans and your second for j = 1:NT are all building arrays iterativel...
2 days ago | 1
Make persistant changes in executable app by user
You have several possibilities: Use a search strategy to try to find configuration information. For example use the Windows USE...
2 days ago | 0
Error Message: Execution of script builtin as a function is not supported:
This suggests that you have somehow added a builtin.m to your MATLAB path. You will need to track it down and remove it. If you ...
3 days ago | 0
"Invalid text character. Check for unsupported symbol, invisible character, or pasting of non-ASCII characters." My teacher typed 2ˆ6, and she got the answer, but I don't.
Your teacher probably typed 2^6 and you probably typed 2ˆ6 The valid entry is U+005E (unicode 5e) The invalid entry is U+02...
4 days ago | 0
how to convert mat file to dcm file
When you write a DICOM file, you need to set a number of entries in the data dictionary, including SOPClassUID (but several othe...
4 days ago | 1
Not able to use imread on images in subfolders
No, there is no way to get imread() to work on reading subfolders. You should be using roughly SearchPath = uigetdir('C*'); i...
4 days ago | 0
Trying to Differentiate Parametric Equation, Error "Error using diff Difference order N must be a positive integer scalar."
syms R Z e v real You declare v as symbolic v = linspace(0, 2*pi,1000); You overwrite v as numeric.
4 days ago | 0
MATLAB eig function giving different eigenvectors on different computers?
MATLAB Online is running using Linux on X64 CPUs, not Apple Silicon. Apple Silicon uses a different library for the calculatio...
5 days ago | 0
PWM outputs does not seem to work with a Rasberry pi 5.
Raspberry Pi 5 is not currently supported in Simulink; https://www.mathworks.com/hardware-support/raspberry-pi-simulink.html
5 days ago | 0
Unable to extract field 'build_problem' from 'mxArray'.
You are declaring the function build_problem twice in the same scope. You cannot declare class-dependent methods inside a MATLA...
5 days ago | 0
Does mathworks support a linux C complier
R2022a supported GCC 7.x, GCC 8.x, GCC 9.x, and GCC 10.x for Simulink Coder. However, it did not support gfortran 10.x
5 days ago | 0
Matlab Showing Imaginary Numbers as Real
syms B U = 3; N = 4; g = 10 e = [0 1 2 3]; S =solve(U==N*sum(e.*exp(-B.*e))./sum(exp(-B.*e)), B, 'MaxDegree', 3) if imag...
6 days ago | 0
When creating a swarmchart from categorical X and double Y values, is there a way to extract the resulting jittered X values?
ss = struct(s); ss.XYZJittered Note: the default setting for swarmchart is Jitter = 'off'
6 days ago | 2
| accepted
I have put different log in name in mathworks account than that of my OS. How to resolve this?
You re-run the activation process. This time, you need to specify the username the same as the Windows username https://www.math...
6 days ago | 1
Convey binary sting into 2 bits format
11111111111111111111110000011120101111000111100000 (48 bytes) MATLAB is going to treat this as a decimal number, in double pr...
7 days ago | 0
starting vector (zero vector) equals lower bounds but gets projected to non-zero vector
Although the documentation says that lb specifies that x(i) >= lb(i) for all i the implementing code has violatedLowerB...
7 days ago | 0
| accepted
R2024b: When trying to open an M file, I receive the message: Unrecognized function or variable 'uiopen'
Experiment with using restoredefaultpath; rehash toolboxcache If that works then savepath
7 days ago | 0
| accepted
DelaunayTri
As of R2013a you can create a triangulation object, passing in the connectivity and x and y and z data. Unfortunately, you cann...
8 days ago | 0
Why am I recieving the following error "Warning: Failure at t=1.705994e+00. Unable to meet integration tolerances without reducing the step size below the smallest value all"
When you call a function from ode45(), it is strictly necessary that the called function is continuous to its second derivative....
8 days ago | 0
How do I share files with matlab drive?
Open https://drive.mathworks.com Navigate to the directory containing the files you want to share. Right click and select Sha...
8 days ago | 1
Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 3-by-1.
You initialized ImJPG_Sepia as an n by m by 1 matrix.
8 days ago | 0
Fminsearch error: not enough input arguments.
[y_ex,fval]=fminsearch(@(beta,sigma) subjectval(beta,sigma),y0) fminsearch passes a single vector to the object function. You h...
8 days ago | 0
Given the spectrum of a signal x(t) , What is the minimum sample rate that would allow for x[n] to be recoverable?
This is a square wave. The fourier transform of a square wave consists of an infinite series of odd harmonics; https://dsp.stack...
8 days ago | 0
is it possible to perform a nested Batch?
Once you have reached the limit on the number of simultaneous batch jobs, individual batch jobs are not going to suspend themsel...
8 days ago | 0
Find the indices of numbers that occur first
[found, idxV] = ismember(X, V); This will return the idx of elements of X within V; found(K) will be false if X(K) does not mat...
8 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)