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Walter Roberson


Last seen: 1 day ago Active since 2011

Followers: 23   Following: 0

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I am currently in the middle of moving, so I am not around very much.

Programming Languages:
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English

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  • Most Accepted 2023
  • Most Accepted 2022
  • Solver
  • First Review
  • Most Accepted 2021
  • Roberson Cup
  • Most Accepted 2019
  • Most Accepted 2018
  • Most Accepted 2017
  • 36 Month Streak
  • Most Accepted 2016
  • Most Accepted 2015

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Answered
Can I send image from Matlab to iPhone?
https://www.mathworks.com/matlabcentral/fileexchange/64652-matlab_to_iphone_and_ipad With this toolbox, you can create Apple i...

20 hours ago | 0

Answered
Count unique vector in a sequence
Put them together into one 2D array, arranging them as rows (rather than as columns), and then use unique() with the 'rows' opti...

1 day ago | 2

| accepted

Answered
MCC USB-231 DAQ Digital I/O
USB-231 is not a supported device. https://www.mathworks.com/matlabcentral/answers/2132986-mcc-usb-231-compatibility-with-simul...

2 days ago | 0

| accepted

Answered
The Output structure of a code is showing different outputs in command window and workspace
The command window version is the result of an implicit execution of the display method. The display method examines the object ...

2 days ago | 0

| accepted

Answered
Does SoC Model Creator support only Vivado 2020.2?
Vivado 2023.1 requires R2023a. https://www.mathworks.com/matlabcentral/answers/518421-which-versions-of-xilinx-vivado-are-suppo...

3 days ago | 0

Answered
Error message when using timers in AppDesigner after a few seconds running
'TimerFcn', @app.timerTest); the timer will be created with a TimerFcn that is a function handle to a function that expects two...

3 days ago | 0

Answered
Why does the error at the bottom show up even though the correct dataset seems to be selected?
Your values in the table are scalars. You cannot create response variables from scalars.

3 days ago | 0

Answered
Confusion of IMAQ, get data "logging"
Before getdata has been invoked, the images either do not exist (for cameras that do not have an automatic shutter) -- or else t...

3 days ago | 0

Answered
Error when using "retime" function MATLAB 2024a.
One of the timetables contains a variable named INV1Spd but that variable is not type single or double. You should check that t...

4 days ago | 0

Answered
dicomreadVolume 'Directory was not readable' error
You would get that error if MATLAB cannot find the given file on the MATLAB path. Typically, that means that you specified the ...

4 days ago | 0

Answered
Using output of a function into the integral2 Function - Unrecognized function or variable
U_Rad is defined only as the nominal output variable of function Cuts. You call E_Plane(n) = Cuts(loop_theta, phi_E); ...

5 days ago | 0

| accepted

Answered
Which MATLAB license should I buy as a reseacher working in an NGO?
You cannot use a Student license or a Home license for your research work. Officially you will need to get a Standard license (...

5 days ago | 0

Answered
Please I want help I have homework I made a mistake saving the file
Sorry, the code is gone. The one remaining hope is that an .asv might have been saved in the same directory as the file. https...

5 days ago | 0

Answered
Displaying figure from function in MATLAB gui
function Plot(Val, ax) X = [0:0.5:5]; Y = [0:0.1:1]; [x,y] = meshgrid(X,Y); z1 = [x.*y.*57.5]; ...

6 days ago | 0

Answered
solving symbolic equations with partial derivatives
You need to create a function, theta, and express the other functions in terms of theta, and then use functionalDerivative

6 days ago | 0

Answered
sum of harmonic series 1+1/2+1/3
syms n result = symsum(1/n, 1, 5000)

6 days ago | 1

Answered
Difficulty in plotting equation in matlab
N = 1.15; k = 1.38e-23; q = 1.6e-19; Vgo = 1.174; Rso = 0.085; Iso = 21.6e-15; alphao = 0.0165; Rth = 1; T_ambient...

7 days ago | 0

Answered
Error in ode15s
[t,T]=ode15s(@f,t,IC); ode15s is to invoke function f, passing it time in the first parameter and passing initial conditions in...

7 days ago | 0

Answered
How can I use selections from multiple uidropdowns as function inputs?
Inside the plotting function, access the uidropdown value property directly for the two controls. xval = app.XDropDown.Value; ...

7 days ago | 0

Answered
The blank before var >0.5 cause error in R2016a
You are running into Command Function Equivalence https://www.mathworks.com/help/matlab/matlab_prog/command-vs-function-syntax.h...

7 days ago | 0

| accepted

Answered
When plotting multiple subplots in the for loop, how do you stop the axes from overlapping?
ax1 = axes(t); That either creates a new axes for the figure number or figure handle is given in t, or else actives the...

8 days ago | 0

Answered
uigetfile canceled returns 0, converting my string to a scalar
if isnumeric(infile) instead of testing == 0

8 days ago | 0

| accepted

Answered
How can I execute the empirical mode decomposition (emd) syntax in MATLAB R2016b?
The emd() function was introduced in MATLAB R2018a.

8 days ago | 0

| accepted

Answered
Can I use a student license if I am not currently enrolled in courses?
Officially, you can only use the Student license to complete course work. As you currently are not taking any courses, officiall...

8 days ago | 0

Answered
How to use contourf to plot a mesh not generated in matlab, i.e. imported mesh coordinates from abaqus. The issue is that coordinates are not sequential.
Perhaps try https://www.mathworks.com/matlabcentral/fileexchange/10408-contours-for-triangular-grids https://www.mathworks.co...

8 days ago | 0

Answered
System Composer addition to suite
System Composer is not available for the Home license. The products available for the Home license are restricted to the ones ...

8 days ago | 0

Answered
how can i use my GPU from openVPN to my matlab
If your GPU is on the same system that MATLAB is running on, then just go ahead and use the GPU normally. If your GPU is on you...

9 days ago | 0

Answered
Using logicals in arrayfun
u = arrayfun(@(x,y) x{1}(1:max(0,y)), tempA, tempB, 'UniformOutput', false); The secret here is that max(0,VALUE) is 0 if VALU...

9 days ago | 0

| accepted

Answered
Difficulties converting E-001
Insert a leading '1' before each of the exponentials, and then multiply the pairs together. format long g T = table([45; 17], ...

11 days ago | 0

Answered
How do I show the latex form $\mathcal{T}$ by using the function str2sym in live editor?
There is currently no way to interject formatted latex in live editor. The closest you can get is to use the menu items to compo...

12 days ago | 1

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