Walter Roberson
Followers: 42
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 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
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The contributor whose answers received the most acceptances in 2015
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Feeds
Matlab 2024a not starting after Mac OS Sonoma 15.1 Update
I recently upgraded to MacOS Sequoia 15.1.1 (a day after upgrading to 15.1). I am now getting this message for all MATLAB versio...
alrededor de 9 horas hace | 0
hello Dear!! I'm a new coming in the community I want your help. about coding on MATLAB does the code is correct ? or the using of (&&) is no faire? and how can I correct it? thank you for respond .
if app.LikeCheckBox.Value==true app.EditField.Value='you Like our channal' elseif app.LikeCheckBox.V...
alrededor de 10 horas hace | 0
Solve 𝑔 ′ ( 𝑥 ) = 0 for z in terms of N, a positive integer
Let's try... Q = @(v) sym(v); syms f(x) g(x) G(z) syms z positive syms N integer assumeAlso(N, 'positive'); g(x) = 4*N*s...
1 día hace | 0
I want to draw pathline for two particle for a 2d problem
When you use griddedInterpolant, then your x must have all of its columns the same, and the row values must be sorted. Your y mu...
1 día hace | 1
plot csv with column names used automatically as x and y label
data = readtable("results.csv","TextType","string"); plot(data, data.Properties.VariableNames(1), data.Properties.VariableNames...
1 día hace | 0
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How could I make a script for this ecuation where i can solve for f?
syms f epsilon D Re Q = @(v) sym(v); eqn = 1/sqrt(f) == -Q(2.0) * log(epsilon/D/Q(3.7) + Q(2.51)/(Re*sqrt(f))) F = solve(eqn,...
1 día hace | 0
find intervals for both B and C which make the exponential function F converge to some points.
There is no point in calculating most of the F values since we are only interested in convergence. So we only test the last few ...
1 día hace | 0
Attempting to interpolate with interp2 and getting errors about the sample point vector?
[x, y] = meshgrid(0:0.01:1, 0:0.01:1); x = [0 1 1 0]; y = [0 0 1 1]; You are overwriting the grids of data produced by meshgr...
2 días hace | 1
GPU programming for Mac M1
If I recall correctly, someone posted indicating that they had generated mex C++ code that calls into Apple's GPU routines, and ...
2 días hace | 0
Deciding when to call a Matlab function: Within my symbolic math code, or within my converted numerical code?
Typically you compute in two phases: Symbolic-only phase. Everything that is changeable is generalized as a symbolic variable. ...
3 días hace | 0
| aceptada
translation of Simulink generated integers into a 1-D vector
If you have a fixed number of values to process at a time, use the DSP Toolbox buffer blocks, https://www.mathworks.com/help/dsp...
3 días hace | 0
| aceptada
How to make vectors A1, A2,... A127. Rolling time window.
If you have the Signal Processing Toolbox, you might as well use buffer() https://www.mathworks.com/help/signal/ref/buffer.html...
3 días hace | 0
How to find the point the graph crosses the x axis
if x(1) == 0 crossing_location = 1; elseif x(1) < 0 %crossing from negative to positive crossing_location = find...
3 días hace | 0
Trying to create a power factor correction system but no data shows
You have Physical Signals. You need to convert them before Scope. https://www.mathworks.com/help/simscape/ref/pssimulinkconverte...
3 días hace | 0
Cant show plot on a graph matlab GUI
selectedFunction = app.DropDown.Value; That is going to reply with a character vector even if the Items was initial...
4 días hace | 0
Is there a way to find the lengths of the contours in fcontour or other?
You can request the ContourMatrix property of the FunctionContour object returned by fcontour . The ContourMatrix contains infor...
4 días hace | 0
Error in state of SceneNode
txt = sprintf('$T=%.1f^{\\circ}$C'); This will not be an actual degree symbol, but it is close. The LaTeX interpreter does no...
5 días hace | 0
Need help writing a matlab function.
A deliberately clumsy implementation: function appropriate_element_to_return = hw4_problem3(w, n) array_being_indexed = w; ...
5 días hace | 0
Define function for transient transient boundary condition
function Trefrig = Trefrig(state.time) thermalBC(thermalmodel,"Edge",7,... "ConvectionCoefficient",hrefrig,... "Ambie...
5 días hace | 0
Power spectra of bottom pressure at D5, Digital filtering
subplot(3,2,5); % Power Spectral Density (PSD) 및 신뢰구간 계산 [Pxx, F, Pxxc] = pwelch(bottom_pressure, WINDOW, NOVERLAP, NFFT, Fs, ...
6 días hace | 0
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How do I add arrows in evolution analysis figure?
You can use annotation 'arrow'. Unfortunately by itself annotation() uses Normalized coordinates -- normalized relative to the f...
6 días hace | 0
Every time I run this code, I get "Error using plot Vectors must be the same length.
The equation for guassian pulse does not involve complex numbers. https://doc.comsol.com/6.1/doc/com.comsol.help.comsol/comsol_...
7 días hace | 1
| aceptada
Coordinates of objectes in the images
You velocity logic is incorrect. You build up a list of centroids. There can be more than one centroid in any image, and you co...
7 días hace | 0
Why Is Colon Operator Not Equivalent To linspace Command?
The colon operator is defined to use repeated addition. When the increment does not happen to be an integer multiple of a power ...
7 días hace | 0
How to customize the markers of the scatter figure, as shown below
Unfortunately, markers are only customizable between a limited number of pre-set shapes. You will need to patch(), as I recentl...
7 días hace | 1
How to plot 3D radiation pattern together from 2 separated .OGL files data in Matlab
patternCustom() does not accept x y z vectors. patternCustom accepts magE array or vector, and theta and phi vectors. (In the c...
7 días hace | 0
Non-linear Scale for Radius Axis in a Polarhistogram Plot
polaraxes does not have any way to adjust the scale factor. It does not for example have an RScale property that might (hypothet...
8 días hace | 0
| aceptada
Does R2022b support MISRA C:2012 Amendment 3 (AMD3)?
MISRA C:2012 Amendment 3 support was added in R2024a.
8 días hace | 0
How to find the position of a number in an array?
You can use the “find” function to return the positions corresponding to an array element value. For example: a = [7 8 8 2 5 6];...
8 días hace | 22
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