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Guillaume


University of Brighton

7 099 total contributions since 2012

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Answered
matrix mis-match
There doesn't appear to be any logic behind the choice of * vs .*, / vs ./, etc. If you don't understand the difference between ...

3 jours ago | 1

Answered
multiply two series of vector in loops
Assuming R2016b or later: result = MA .* permute(MB, [3, 2, 1]); will give you a 3D matrix, where result(i, :, j) is MA(i, :) ...

3 jours ago | 0

Answered
How can i move excel sheets in the same file
This should do the job: function reordersheets(excelfile) %excelfile: full path of excel file whose sheet are to be reorde...

4 jours ago | 0

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Answered
Calling function described in actxcontrol inside parfor loop
I'm not entirely sure what you mean by "It doesn't exist inside the script as it is, but this function is a component of actxcon...

5 jours ago | 0

Answered
mkdir and simulations problems
As far as I can see the problem has nothing to do with matlab expertise but is a failure in your logic. You create a folder nam...

5 jours ago | 0

Answered
How to extract elements from each dimension of a 3D matrix and put it in a vector.
Sure, you just have to type the same code 91 times... As you can guess, that's not a viable approach. If you start numbering va...

6 jours ago | 0

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Answered
Add a value to an element in a matrix
Cause is a specific problem where I need to add that values of S just in these columns of A Then, this should work: A(S(1, :) ...

6 jours ago | 0

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Answered
How to divide timeseries data into seasonal variation
Note that if you're indeed using timeseries, you may be better off using timetables instead. They're slightly easier to use and ...

6 jours ago | 0

Answered
FileCopy does't work
I don't remember the details of your previous question, but clearly the code I gave you is meant to work with data imported a pa...

6 jours ago | 0

Answered
"Reference to non-existent field" Error
Well, yes, you never use the input parser to parse your input, so the Results never get populated. p.parse(system); after you'...

7 jours ago | 0

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Answered
load C/C++ DLL on a computer without internet access
Most likely, the library is C not C++. They're two very different things and loadlibrary cannot load C++ dlls. You can generate...

8 jours ago | 0

Answered
Some number inputs do not work with code while others do.
You can see in your screenshot that both mass and acceleration are text not number. While you can indeed multiply two strings to...

8 jours ago | 0

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Answered
Problem with for loop within a loop of a loop
Probably, the biggest source of slow down is the lack of preallocation of u. As a result, it grows one column at a time, necessa...

8 jours ago | 1

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Answered
Using an array of indexes to index an array
Note that if you didnt' preallocate finalImage before the loop, your code will be slow indeed since finalImage would be realloca...

8 jours ago | 0

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Answered
Raising a matrix to a power
The problem is not the .^0.5, it's the ^2, which probably should be .^2. Note that x.^0.5 is the same as sqrt(x). However, If T...

8 jours ago | 0

Answered
Conversion to double from cell is not possibel
Whatever T is, it's very likely that: T(j, 2:10) = a_table is going to be an error. Now, I wouldn't expect that line to thro...

8 jours ago | 0

Answered
How to estimate the summation equation quickly in Matlab?
If I've understood your formula correctly: returns = readtable('PC Example.xlsx'); %read the data [year, month] = ymd(return...

8 jours ago | 0

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Answered
How to view Figure source code?
There is no source code for a figure that you can view (the figure creation code was probably originally written in C, C++, Java...

8 jours ago | 0

Answered
Undefined function 'diff' for input arguments of type 'table'
As I've told you already, read the documentation, in particular Access data in tables. As explained on that page, () indexing ...

8 jours ago | 1

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Answered
How to resolve this error Error using fprintf Function is not defined for 'cell' inputs.
This is how I'd do it: hstr = cellfun(@(v) strjoin(compose("%d", v), " "), h); %convert each vector in h into a string [row, ...

8 jours ago | 0

Answered
Programatically creating an anonymous function that separates "Variables" and "Parameters"
Thinking a bit more about it, metaprogramming in matlab can often only be achieved by using the dreaded eval. This is a rare cas...

9 jours ago | 2

Answered
Programatically creating an anonymous function that separates "Variables" and "Parameters"
You won't be able to do this with just anonymous functions, they're too limited in matlab (no multiple statements, no branching)...

9 jours ago | 0

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Answered
What do the empty square brackets [] do in the expression executed by eval?
The same as they always do, concatenate whatever is inside the bracket. model must contain a char vector, so it just appends (0,...

10 jours ago | 0

Answered
MATLAB doesn't let me plot 3 graphs in the same plot
Matlab plots exactly what you ask it. plot(tm,ve(i+1),'green') will plot the scalar value ve(21) (since after the loop i is 20...

10 jours ago | 2

Answered
matrix dimension reshape error
i had expected to have dimension error in line 6 but it did not I would expect an error if the if condition is true when n <= 2...

10 jours ago | 0

Solved


Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

10 jours ago

Answered
Best way to create a matrix of points?
A=[-5 -4.5 1.5 2; -5 -4.5 2 2.5; -5 -4.5 2.5 3; -4.5 -4 1.5 2; -4.5 -4 2 2.5; -4.5 -4 2.5 3]; points = unique([A(:, [1, 3]); ...

10 jours ago | 0

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Answered
Regarding matlab cody solutions
Once you solve a problem, you can see other solutions of the same size or larger. You won't be able to see smaller solutions unt...

10 jours ago | 1

Answered
How to reshape the columns of a matrix into one row?
It's not clear what it is you want as an output. If it's a row vector, there's no concatenation involved, you just simply reshap...

10 jours ago | 1

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Answered
Hello. How much does support about license Matlab Version 9.5 (R2018b) cost for year?
Contact Mathworks sales for this. The cost is going to depend on the type of license you have, on which toolboxes you have and w...

10 jours ago | 1

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