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Walter Roberson


42 905 total contributions since 2011

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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Answered
How to change the font size in all plots in the live editor (live scripts)?
set(findobj(groot, 'type', 'axes'), 'FontSize', 15)

environ une heure ago | 0

Answered
how to extract data from metadata in matlab?
https://www.mathworks.com/help/matlab/hdf5-files.html

environ 2 heures ago | 0

Answered
Trouble: integrating Gui button with data sorting script.
Have the beginning of your code call some functions to create the GUI and present the first GUI screen. Then have your code call...

environ 3 heures ago | 0

Answered
Solving system of non-linear trigonometric symbolic equations
There is a closed form solution to the equations. It involves arctan of ratios of polynomials of degree 43, involving the roots ...

environ 4 heures ago | 0

Answered
Can symbolic vectors (not vectors of symbols) be defined and manipulated in the Symbolic Math Toolbox?
No this is not possible. Any variable name is expanded to its contents and any symbolic variable names left are assumed to refer...

environ 8 heures ago | 0

Answered
How to convert .oct file into jpeg format
pwd will be a fully qualified path. When you fullfile with pwd as the first parameter and D: as the second you are concatenating...

environ 8 heures ago | 0

Answered
Output argument y issue
Your methods are not static. Input to shift is a sequence object, which you need to extract the data property of.

environ 8 heures ago | 0

Answered
How to convert 0xffff to -1?
typecast(uint16(hex2dec('ffff')), 'int16')

environ 9 heures ago | 0

Answered
Changing String Name in a For Loop
In that line replace .item_(i) with .(sprintf('item_%d', i)) The () are important for this purpose.

environ 9 heures ago | 1

Answered
Upgrade from student to standard or home license
Sorry, there is no upgrade path available (at least not as far as I can tell)

environ 20 heures ago | 1

Answered
How can I sort the filenames in order given by dir()? I cannot turn a structure into a character array which means I cannot use sort, any tiips?
https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

2 jours ago | 0

Answered
How can an equation be obtained using four series of data?
"That is, when we put the data of the other columns in the equation, we get the ET value." You are not likely going to be able ...

2 jours ago | 0

Answered
HOW I CAN REMOVE THE SPACE
yourstring(yourstring == ' ') = '' ;

3 jours ago | 0

Answered
Solving System of linear equations of the Matrix of Matrices Form
You will need to write the code yourself. Mupad has no built in mathematical functions for matrices of matrices.

3 jours ago | 0

Answered
Scatter3 appears to require categorical values
I predict that you are doing this on top of an existing axes that had categorical values on the x axes. You cannot mix categoric...

4 jours ago | 1

| accepted

Answered
How to transform an array into a bottom triangle
squareform() ?

4 jours ago | 0

Answered
Different polyfit / polyval
The two results do not need to be same. When you use the version that outputs mu then you would pass mu in to polyval. The ve...

4 jours ago | 0

Answered
Computer replacement - can I install Matlab on another computer without uninstalling the program from the broken computer?
There is a procedure for deactivating a computer that is no longer available. You have to click to certify the reason. If the ol...

4 jours ago | 0

Answered
Store all user inputs from a loop + how to make the loop non-repeated
english = importdata('testing.xlsx'); Ntry = 10; b = cell(Ntry, 1); word_order = randperm(numel(english), Ntry); for k...

4 jours ago | 0

| accepted

Answered
Convert Values From Cell Elements to String Elements for Complete Array
mask = cellfun(@ischar, raw); raw(mask) = num2cell(string(raw(mask)));

4 jours ago | 0

| accepted

Answered
Is the Network License Manager Server Allowed on Public IP Space?
Yes, it can be on public IP. However, you can only serve members of your own organization (or perhaps some collaborators, when t...

4 jours ago | 0

| accepted

Answered
extracting coordinates numbers from array of coordinates
textscan does not permit cell array inputs as the first parameter.

5 jours ago | 0

Answered
how to write in matlab?
flag(j) = 1;

5 jours ago | 0

Answered
Non-monotonic interpolation error
No, there is no way to solve that problem. The process of interpolating changes the data, so even if you did not have the non-mo...

5 jours ago | 1

Answered
Why do I get this error since there is only one function?
This happens when a script file with that name contains a function definition with the same name. Which can also happen in what ...

6 jours ago | 2

| accepted

Answered
Many functions in a large script file
"I am wondered how can I add nested functions in a parent function in a while loop. Is that possible?" No. functions cannot be ...

6 jours ago | 0

| accepted

Answered
cannot call m-file in another m-file
y = 2x + 3; 2x is not a valid variable name in MATLAB, and it is not a valid way to write a number in MATLAB. Like the error m...

6 jours ago | 1

| accepted

Answered
Clustering Calculating total value
C1 = C(1,1:2); C2 = C(1, 3:4); X = YourArray - C1;

6 jours ago | 0

Answered
Solver execution time is very slow.
tic syms a1 a2 a3 eqns = [a1 + 0.01 * (a2 + a3) - 5, a2 + 0.01 * (a1 + a3) - 6, a3 + 0.01 * (a2 + a1) - 7]; sol = solve(eqns,...

6 jours ago | 0

Answered
Inquiry MISRA C 2012 6.1
You have a problem. http://port70.net/~nsz/c/c89/c89-draft.html#3.5.2.1 A bit-field may have type int , unsigned int , or sig...

6 jours ago | 0

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