Walter Roberson
Followers: 43
I am currently in the middle of moving, so I am not around very much.
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English
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
Different color scale?
caxis([0 0.3]); That is affecting the current axis. caxis([0 0.5]); That too is affecting the current axis. Which app...
6 hours 前 | 0
reshape data to fit into surf/contour
You cannot do that. Consider using https://www.mathworks.com/matlabcentral/fileexchange/38858-contour-plot-for-scattered-data ...
14 hours 前 | 0
How fmincon really work?
fmincon() always tries to minimize the result of the objective function. If the objective function returns negative values, then...
15 hours 前 | 0
How to get PWM on digital outputs pins of NI-6052E DAQ card?
Use a single Digital Output (Single Scan) block https://www.mathworks.com/help/daq/digitaloutputsinglesample.html Configure i...
15 hours 前 | 0
I have made a code which runs on matlab online but shows an error when run on my local pc
In R2022b, R2023a, and R2023b, https://www.mathworks.com/help/releases/R2023b/audio/ref/speech2text.html has a different calling...
18 hours 前 | 0
vpasolve doesn't work with roots for some equations
vpasolve((-1.2068e+21*x - 2.0765e+20)^(1/2)==-2.2185e+10,x) The left hand side involves a square root. The right hand side invo...
21 hours 前 | 0
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Matlab ilaplace not working properly
syms s sol = ilaplace(40/(s*(2*s^3 + s^2 + 6*s + 2))) disp(char(sol)) fullsol = rewrite(rewrite(sol, 'expandsum'), 'expandroo...
21 hours 前 | 0
I am trying to store all the values of (f) and all the corresponding peaks of the resulting wave in two columns and then plot f vs. peaks, but there is a problem.
findpeaks() is returning different numbers of peaks for each frequency. clc clear all tspan = [0 5]; Ic = 0; A=1; resu...
2 days 前 | 0
how to plot cross hatch over correlation map?
In https://www.mathworks.com/matlabcentral/answers/2141881-how-to-make-a-specific-bar-to-be-hatched-with-a-specific-color#commen...
2 days 前 | 0
Hi, how do I fix the error using superiorfloat? I've tried using double() for the subs() like I've seen suggested before but that caused an error.
eomFunc=odeFunction([thetadot,NOFFEOM],[theta,thetadot],mu,R,m,k); The syntax of odeFunction requires that the third parameter ...
3 days 前 | 1
| 已接受
Identifying Boundary Nodes in a Point Cloud
Your red nodes are sometimes immediately adjacent to your blue nodes. There is no way you will be automatically able to differen...
3 days 前 | 0
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...
4 days 前 | 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...
4 days 前 | 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...
5 days 前 | 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...
5 days 前 | 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...
5 days 前 | 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,...
5 days 前 | 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 ...
5 days 前 | 0
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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...
6 days 前 | 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 ...
6 days 前 | 1
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. ...
7 days 前 | 0
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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...
7 days 前 | 0
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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...
7 days 前 | 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...
7 days 前 | 1
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...
7 days 前 | 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...
7 days 前 | 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...
7 days 前 | 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...
8 days 前 | 0
Need help writing a matlab function.
A deliberately clumsy implementation: function appropriate_element_to_return = hw4_problem3(w, n) array_being_indexed = w; ...
9 days 前 | 0
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