Walter Roberson

Last seen: Today | Actif depuis 2011

Followers: 62 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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submit m files for execution via the command line
If you open MATLAB in no display mode, then you will get a MATLAB session that is effectively all command-line and command windo...

environ 22 heures il y a | 0

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submit m files for execution via the command line
The official way of doing this is to use MATLAB Production Server; https://www.mathworks.com/products/matlab-production-server.h...

environ 22 heures il y a | 0

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exporting files to matlab
Go ahead and save the file to MATLAB Drive. Then in MATLAB Online use the folder view on the appropriate directory. Right click ...

1 jour il y a | 0

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How to fix a code?
You created a vector named t . Then in constructing the anonymous function for ode45 purposes, you used @(t,x) equations(t, ...

2 jours il y a | 0

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writing a mex statement for outputting values of some variables to the console.
https://www.mathworks.com/help/matlab/apiref/mexprintf.html #include "fintrf.h" integer*4 mexPrintf(message) character*(*) m...

2 jours il y a | 0

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hi, any tips for mapping 3 nos. of 4x4 matrix (k1, k2, k3) and i need to map it into 8x8 matrix (Kg) and their intersection should add up...
Kg = zeros(8,8); Kg([3 4 1 2], [3 4 1 2]) = K1; Kg([1 2 5 6], [1 2 5 6]) = Kg([1 2 5 6], [1 2 5 6]) + K2; Kg([7 8 1 2], [7 8 ...

2 jours il y a | 0

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zero(s) of a nonlinear implicit function
In particular, I want to find a array of outputs for a given array of inputs. That is not possible using fsolve() -- not unless...

3 jours il y a | 1

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No Code to Analyze Add code with code formatting and then click Analyze.
You could get that error if you were using LiveScript and you accidentally inserted your code using "Insert Text" instead of "Co...

4 jours il y a | 0

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Parallel Worker sends "finished" after less then a second of "running" but has a infinite Loop. I dont want it to stop.
https://www.mathworks.com/help/parallel-computing/parallel.pool.dataqueue.html The side that you create the parallel queue on ...

4 jours il y a | 0

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Does Polyspace (BugFinder and Code prover) support Ada language?
https://www.mathworks.com/products/polyspace-ada.html Polyspace Products for Ada

4 jours il y a | 0

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What does rng(seed,''5normal") actually means and what they are controlling while generating the matrices?
According to https://www.mathworks.com/help/matlab/ref/randstream.html#mw_cc34b6ad-c7e6-4943-b21b-7d7310a4dd52 "v5normal" corres...

5 jours il y a | 0

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Hello. I need to transform a folder of PNG gray pictures to hex files
projectdir = './inputimages'; %directory to look for png files hexfiledir = './hexdir'; %directory to store hex files ...

5 jours il y a | 0

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Ezyfit: Single vs. Two-Step Fitting Problem
Is there a method or setting within Ezfit to obtain accurate 4-parameter results in a single fitting run (Method A)? No.

5 jours il y a | 1

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Cyclic dependency in OOP
You can use dependent properties, perhaps in conjunction with hidden properties. In the example given, you could have a hidden...

6 jours il y a | 0

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How to vectorize analytical derivative functions for bvp4c?
In order to calculate analytic derivatives, you need to be using the Symbolic Toolbox. If you use a scalar symbolic formula (an...

6 jours il y a | 0

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Is it possible to reduce this for loop into one line of code?
Headers(cellfun(@(X)any(ismissing(X),'all'), Headers)) = cellstr("Missing_header_" + find(cellfun(@(X)any(ismissing(X),'all'), H...

6 jours il y a | 1

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How to Graph with the endpoints excluded from values
r = 2:0.01:10; r(ismember(r, [2, 10])) = []; %cross-check format long g r(1) r(end)

6 jours il y a | 0

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Help with converting symbolic gradient/Hessian to anonymous function
matlabFunction(grad, 'Vars', {x}) When you pass a cell array as Vars, then each element of the cell array is a group of variabl...

7 jours il y a | 1

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How to implement FIFO in MATLAB with continuous input
Outline: Q = []; while true check whether data is present if data is present new_data = fetch data; ...

7 jours il y a | 0

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Can I create stackedplot with arrays of different row lengths?
First convert the tables into timetables, which might require converting the dates into datetime objects. Then form the union o...

8 jours il y a | 0

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how to set matlab command window fonts in -nodesktop -nosplash -nojvm mode？
When running MATLAB in -nodesktop -nosplash -nojvm mode, no graphics command input window or output window is created. Instead, ...

8 jours il y a | 0

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Directory access failure for some folders Mac Sequoia
System Settings -> Privacy & Security -> Files & Folders -> MATLAB_R2022b, and enable Desktop Folder Note: if some other versio...

8 jours il y a | 0

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Réponse apportée
Handle warning of "Array is wrong shape or size" when plotting a geopolyshape and setting the ColorData field in MATLAB
https://www.mathworks.com/help/map/ref/map.graphics.chart.primitive.line-properties.html#mw_f88b2538-674c-488f-bc33-da8b68310c74...

8 jours il y a | 0

Réponse apportée
Actualizacion de licencia Matlab
Yes. For approximately 4 years, you can pay for MATLAB licenses retroactively. For example if the license expired May 1, and yo...

8 jours il y a | 0

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Solve two non linear equations using Newton Raphson method x(1)^2 - 2x(1) - x(2) - 3 = 0 and x(1)^2 + x(2)^2 - 41 = 0
syms x [1 2] f(1,1) = x(1)^2 - 2*x(1) - x(2) - 3; f(2,1) = x(1)^2 + x(2)^2 - 41 sol = vpasolve(f, [x(1), x(2)], [2;3]) subs(...

8 jours il y a | 0

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How to make a plot with upper x-axis adapted to the scale of the lower x-axis
Sounds like a job for linkaxes

9 jours il y a | 0

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How to detect missing values in a string cell array
You are applying ismissing() to a cell array. That is the same thing as calling [ismissing(A(1)), ismissing(A(2)), ismissing(A(...

10 jours il y a | 0

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Réponse apportée
I am trying to graph a function over time, but im struggling to code this.
Two different approaches: g = @(t) 2.4*exp(-t)-2.4*cos(2*t)+4.4*sin(2*t)+10*t*cos(2*t)+72*t*sin(2*t); fplot(g,[0,10]); syms...

11 jours il y a | 1

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How do I fix a "Color data must be an m-by-n-by-3 or m-by-n matrix." error?
Documented: If the file is a TIFF file containing color images that use the CMYK color space, then A is an m-by-n-by-4 array. ...

12 jours il y a | 0

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Linux ssh: can I redirect only the MATLAB plot windows with X-forwarding?
Sorry, there is no way to forward only plot windows. You could run with the command window minimized, which should reduce the g...

12 jours il y a | 0

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