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Walter Roberson


Last seen: Today |  Aktiv seit 2011

Followers: 37   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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Beantwortet
Plotting data dependent on three independent variables.
Use scatteredInterpolant() to compute a resultant surface with three independent inputs. Use isosurface() or slice() to plot th...

ein Tag vor | 0

Beantwortet
Only the first if-statement block executes,
if 0 <= alpha <= pi/2 MATLAB interprets that as if ((0 <= alpha) <= pi/2) the first part, 0 <= alpha, produces a logical valu...

ein Tag vor | 0

| akzeptiert

Beantwortet
Display Image to a specific Monitor
get(0,'MonitorPositions') will return a list of [StartX, StartY, Width, Height] coordinates. You would access the StartX and ...

2 Tage vor | 0

| akzeptiert

Beantwortet
How can you close a busy/unavailable serial port object that was created with "serialport" if a script crashes without properly closing it?
serialportfind has been supported since R2024a.

2 Tage vor | 0

Beantwortet
Standalone Matlab App Runtime Error
The function https://www.mathworks.com/help/stateflow/ref/boolean.html boolean() is part of stateflow, which cannot be compiled....

3 Tage vor | 0

Beantwortet
Open data in File as per user input
plot(file.(x))

3 Tage vor | 0

Beantwortet
how to enable mex detect the C/C++ compiler (integrated in Visual Studio 2022) on older MATLAB (R2018b) ?
My matlab version is 2018b, and visual studio version is 2022. MATLAB R2018b has no support for VS 2018 or later. https://www....

3 Tage vor | 0

Beantwortet
How can I keep the first two elements from CSV values in a string
FilteredData = regexp(YourTable.ColumnName, '^[^,]+(,\s+[^,]+)?', 'match', 'once');

3 Tage vor | 0

Beantwortet
Can a student license be used on multiple computers at a same time R2024a Version?
fullfile(matlabroot, 'license_agreement.txt') 1. License Options 1.1. Individual License Option (i) The Individual Li...

3 Tage vor | 0

Beantwortet
Can I use my gpu to fasten my multiobjective optimization using gamultiobj?
In order to use GPU inside of parallel computations you would need to have one distinct GPU for each parallel computation. It i...

4 Tage vor | 1

| akzeptiert

Beantwortet
Dot indexing is not supported for variables of this type.
Change Conv = Aspen.Tree.FindNode("\Data\Results Summary\Run-Status\Output\PER_ERROR").Value; %Convergence to ConvNode = Aspe...

6 Tage vor | 1

| akzeptiert

Beantwortet
how to draw a peak line
mask = islocalmaximum(YourSignal); peak_times = YourSignalTimes(mask); peak_values = YourSignal(mask); plot(peak_times, pea...

6 Tage vor | 0

Beantwortet
Error code line 19 with my Y=f(x), equation used is x^3+x^2-4x-4
equation used is x^3+x^2-4x-4 X=[x0 x1 x2]; Y=f(X); You are passing a vector of X values to f. You have coded x^3+x^2-4x-4 ex...

6 Tage vor | 0

| akzeptiert

Beantwortet
The code returns a value in the form of "theta_3b(x, z) =.". How can I get this to return just theta_3b=
theta_3b = vpa(subs(theta_3b, {x,y,z}, {X,Y,Z})); fprintf('theta_3b = %s\n', char(theta_3b))

8 Tage vor | 0

Beantwortet
Convert string to 256 Characters
TEXT = sprintf('%256s', 'Unformatted Data Version='); fprintf(FILEID, "%s\n", TEXT)

8 Tage vor | 0

Beantwortet
Number of bits per symbol (m) range in Reed-Solomon coding
What am I supposed to do if I want to construct a message with length of 20 (as an example) and each symbol has bit (i.e., 0 or ...

8 Tage vor | 0

Beantwortet
what is the process to store the "gaborMag,[]" into a variable like x?
I suspect that you are asking how to store the output of imshow(gaborMag,[]); into a variable such as x. The answer is gM_sc...

8 Tage vor | 0

Beantwortet
How to effectively solve the problem of incompatibility of AppDesigner using symbol toolkit syms after packaging and publishing into exe and other executable files?
Break your code up into pieces. In the first piece, write your symbolic calculations in terms of constants and symbolic variabl...

8 Tage vor | 0

Beantwortet
Can I call a function from another function and not come back?
You have a small number of possibilities: set(0,'Rec​ursionLimi​t',N) -- change the recusion limit write a third function that...

12 Tage vor | 0

| akzeptiert

Beantwortet
How to turn a movie into a gif?
Before the for i loop insert filename = 'Output.gif'; Change F(i)=getframe; to F(i)=getframe; if i == 1; SZ = size(F(...

12 Tage vor | 0

Beantwortet
waitfor( ) isn't working for a SerialPort
waitfor(app.PicoCom, 'NumBytesAvailable', 0); % wait until it's REALLY done

13 Tage vor | 0

| akzeptiert

Beantwortet
Error using plot Invalid data argument.
I would guess that you need plot(categorical(x), y) and plot(categorical(x), z)

13 Tage vor | 0

Beantwortet
"Unable to compute number of steps from 0 to n by 1" error for symbolic integration
syms z positive syms b positive %... F(z,u_f,lam_f,sigma,ep,b,d)=vpaintegral(nCk(n,0:n,z),alpha,b, z); You are trying to vpa...

14 Tage vor | 0

Beantwortet
Extracting the base name and size of symbolic variables
syms a [3 3] real That is equivalent to a = sym('a', [3 3], 'real') mu(x) = (r.*x).*(1-a*x) When scanning that code, the va...

14 Tage vor | 0

Beantwortet
Error using inputdlg() second time through same code
Options=['YES','NO'] ['YES','NO'] is a request to horzcat('YES', 'NO') which gives the single character vector result 'YESNO' ....

15 Tage vor | 0

| akzeptiert

Beantwortet
fprintf not printing to command window when asking for input.
Is it possible that you are using LiveScript ? When you use LiveSript, the output of fprintf() goes to the script window rather ...

17 Tage vor | 0

Beantwortet
Confusing interaction between "Callback" and "KeyPressFcn" for "edit"-style UIControl
Changing the String property of a uicontrol is not reflected on the display until the user presses Enter or moves the focus away...

17 Tage vor | 1

Beantwortet
Matlab Petrel 2018 connector
You can request the support package for Petrel at https://www.mathworks.com/campaigns/offerings/matlab_interface_for_petrel.html...

18 Tage vor | 0

Beantwortet
Asking for help with variables
% Interplaca T = table(); T.b_inter_PGA = regress(data_inter.res_PGA, X_inter); T.b_inter_PGV = regress(data_inter.res_PGV, X...

19 Tage vor | 1

Beantwortet
How to fix this Error? __ No constructor 'handle.listener' with matching signature found.
Try changing it to list = [... listener(axlisth,findprop(axlisth(1),'OuterPosition'), ... 'Proper...

19 Tage vor | 0

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