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Walter Roberson


41,406 2011 年以降の合計貢献数

I do not do free private consulting. If you want to bring my attention to something, send a link to the MATLAB Answers location.

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Write a menu‐driven program to investigate the constant π
When you mix function and script in the same file then the script must be first .

約9時間 前 | 0

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Does MATLAB GUIDE GUI can work standalone when installed to Raspberry Pi using Simulink?
No, the interface to Raspberry Pi from Simulink only supports displaying image frames; there is no direct plotting support. All ...

約14時間 前 | 0

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En-dash problem
See http://www.mathworks.com/matlabcentral/answers/54-

約14時間 前 | 1

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How to suppress the output of an mfile?
The best approach is to rewrite the code to total the prizes instead of printing each individual success. But if for some reaso...

約15時間 前 | 0

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Optimizing nonlinear functions with size variant input arguments
That error would happen if your objective function returns a non-scalar.

約15時間 前 | 0

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Is it possible to create imdistance line on a mouse click and trace the line as seen with the distance tool in imtool?
imdistline() with three parameters creates a distance tool with endpoints at the given x y position.

約15時間 前 | 0

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Detect Serial Port disconnecttion
The only pin statuses that can be changed are DTR and RTS https://www.mathworks.com/help/matlab/matlab_external/pinstatus.html ...

約19時間 前 | 0

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First image under the following images in GUI
persistent h if ishghandle(h); delete(h); end h = imshow(AppropriateArrayVariableGoesHere, 'Parent', handles.AppropriateAxesTa...

約20時間 前 | 0

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Divide by Zero Warning
https://www.mathworks.com/matlabcentral/answers/12677-dividebyzero-warning-does-not-show-up-when-dividing-by-zero#answer_17313 ...

約20時間 前 | 0

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How to place text in a single excel cell?
label = repmat( {label}, 5, 1)

約21時間 前 | 0

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how to plot the graph using MATLAB guide?
Yes, for sure. Open the .fig in GUIDE and use GUIDE to add an axes and take note of the tag. Then create a "plot" pushbutton. In...

約21時間 前 | 1

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Poly11: "Warning: Equation is badly conditioned. Remove repeated data points or try centering and scaling."
The problem is not in the z: the problem is in the y values being very similar. Your fit can be rewritten as p = [ones(3,1), x...

約21時間 前 | 0

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While loop not terminating when condition is met?
The only time you should ever compare for floating point equality is a situation where one of the numbers has been extracted fro...

約22時間 前 | 0

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Using MATLAB on multiple devices with one account
Student licenses can only be used for fulfilling course requirements , never for employment or research that is not part of a co...

1日 前 | 0

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After running the code for (f ') w.r.t x , we need to draw( f ' ) w.r.t G (in X-axis) while varying n=0, 0.5, 1
your G is length 100. You pass it to bvpinit so matlab knows that your ode function works with 100 derivatives. but your ode onl...

1日 前 | 1

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Error Dot indexing is not supported for variables of this type
The values of global variables will not be copied to workers . They will be empty on the workers unless you assign inside the wo...

1日 前 | 0

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Signs in the output.
Not using disp. If you use fprintf then if you use a plus sign between the % and the numeric width specification then the sign ...

1日 前 | 0

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Solve for symbol not finding explicit solution
Asking for an analytical solution to an equation involving floating point numbers is always a mistake. Are you working to 1 sign...

1日 前 | 0

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Using imrotate creates empty array
This seems to be an issue with imrotate when passed an array in which either the first or second dimension is 1, and the angle i...

2日 前 | 0

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How to delete empty cells in a cell array?
What you show us for input is a 6 x 4 cell array, some entries of which happen to contain empty arrays. What you show us for de...

2日 前 | 0

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how to form matrix
reshape(mm,3,3).'

2日 前 | 0

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How to save matlab figures in .eps format
Use print with driver -depsc (color) or -deps (grayscale)

3日 前 | 0

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Live Editor with Matlab Functions in Simulink.
No, it is not possible at this time. Live Editor does not use simple text files like the main MATLAB editor does: a .mlx file i...

3日 前 | 0

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Removing exponent numbers from output for matlab with symbols
You could expand() . Looking at those equations, you might also possibly be able to usefully simplify() after the expand()

3日 前 | 0

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How does fread bring in a signed integer?
fread() always does binary reads. Representation is internal representation. All modern computer general purpose systems use 2'...

3日 前 | 0

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How to read matfile from guide
The variable is being loaded in the workspace of the callback . You need to think more about which workspace you need the variab...

3日 前 | 0

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How to solve this error when using PSOGWO to optimize an objective function?
zx is a vector so s./zx must be a vector so Phim is a vector. You add Phim to the scalar norm giving f so your f is a vector . H...

3日 前 | 0

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I cant able to run power_PVarray_grid_det command in matlab R2018b command window
It is not part of MATLAB itself. It is at https://www.mathworks.com/matlabcentral/fileexchange/52434-power_pvarray_grid_det Yo...

4日 前 | 0

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Error : Objective function is returning undefined values at initial point. lsqcurvefit cannot continue
You have a couple of issues: The last entry of your second column of your file is empty, so you are getting NaN values. This is...

4日 前 | 0

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saving a .csv file with text values as a .mat file
T = readtable('fisheriris.csv'); Tlabcat = categorical(T{:,5}); Tcats = categories(Tlabcat); Tlabnum = double(Tlabcat); Tnum...

4日 前 | 1

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