Guillaume
University of Brighton
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Contribute at least one answer each month for 36 consecutive months
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Solve all the problems in Introduction to MATLAB problem group
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Content Feed
Replace NaN values in a matrix with values of x positions after it
regionfill seems to be the function you're after. So: newimage = regionfill(yourimage, isnan(yourimage));
más de 1 año ago | 0
Invisible data? Where are they stored?
"from a tool" Is this tool public? Can we see its documentation or download it somewhere? If not, it's going to be difficult to ...
más de 1 año ago | 1
change size and format of images
Assuming all the image formats (list required!) are supported by matlab, the process for each image would be: originalimage = i...
más de 1 año ago | 1
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Is it possible to create this colormap and corresponding colorbar in Matlab?
Note that since R2019b, you can write literal hexadecimal (and binary) numbers directly into matlab. I don't have the mapping t...
más de 1 año ago | 1
| accepted
app.UITable.Data assignment problem
raw(row_nummber,2) is a cell array (made of just one cell), raw{row_number, 2} is the content of that cell. As long as that con...
más de 1 año ago | 0
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Implementation of array of queues
You may want to bite the bullet and implement your own queue class in matlab as I've suggested before. Otherwise, one possibili...
más de 1 año ago | 0
Export to excel from matlab
Indeed, you will end with just the data for the last file in the excel file since for each file, you overwrite what you wrote in...
más de 1 año ago | 0
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MATLAB Onramp: 8.1 Obtaining help
I've just discovered that there are several versions of the Onramp course (R2018b, R2019a, and R2019b). The last two have slight...
más de 1 año ago | 0
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Sorting an array of numbers in descending order by using while loop
"1) Find maximum number from a given array" "2) Then use find function to detect the maximum element idexing" Have a look at t...
más de 1 año ago | 0
lower triangular semidefinite matrix
[i, j, c] = find(tril(yourmatrix)) seems to be what you're after.
más de 1 año ago | 0
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Dot indexing is not supported for variables of this type.
What the error message is telling you is that in Get_VolumetricSource at the point you do: if strcmpi(load_type.case,'homogeneo...
más de 1 año ago | 1
| accepted
Error using textscan, when trying to read in the first two columns of a text file
"Invalid file identifier. Use fopen to generate a valid file identifier." You will typically get this error because the file id...
más de 1 año ago | 2
| accepted
Index in position 2 exceeds array bounds error
How can I fix this? By ensuring that time has at least 1 column before calling your function. At the moment, it is empty since ...
más de 1 año ago | 0
How to find the min, max and mean values of 34 timetables stored in a 1 x 34 cell and add them as extra columns to the respective timetables?
The simplest thing would be to add one column to each timetable to indicate the timetable of origin, then concatenate all these ...
más de 1 año ago | 0
Using cell fun to extract data from a cell containing objects
"I don't understant what a non-scalar structure implies at the moment but I'll look into it" A non-scalar structure is simply a...
más de 1 año ago | 0
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How to compare elements with above and below element in a column?
Rather than coming up with your own code, I'd recommend using the filloutliers method. It doesn't have a detection method for 'm...
más de 1 año ago | 0
Troubles with data types: integers, doubles, scientific notation, and type casting
left = 100*round(left,2); In theory, this should indeed give you integers. Unfortunately, with floating points (double), this i...
más de 1 año ago | 1
| accepted
HSV Averages and SD for Image Processing Toolbox
mean like many functions in matlab operates along the first non-scalar dimension of a matrix. Your h is a 2D matrix, so the firs...
más de 1 año ago | 1
| accepted
Help! Error using audioread (line 90) The filename specified was not found in the MATLAB path.
Since you don't specify the full path of the file, matlab looks for it in the current directory (whatever that may be) or any fo...
más de 1 año ago | 1
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Is there any data type equivalent for queue?
The short answer is that no, unfortunately, there's no queue implemented in base matlab (there may be something hidden in one of...
más de 1 año ago | 2
how to apply horzcat to output arrayfun
I like the functional programming aspect of arrayfun (it clearly says: apply this function to all the elements of these sequence...
más de 1 año ago | 0
| accepted
how to combine these in an array
You're trying to vertically concatenate arrays with different number of columns (2, 1, 1, and 20), which indeed is not possible ...
casi 2 años ago | 0
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How to conditionally delete columns in a cell array
If your cell array is indeed a cell array of single characters, then you'd be better off storing it as a char matrix: input = c...
casi 2 años ago | 0
How to import Excel data in MATLAB in Mac
"I have read that xlsread does not work on Mac and I would like to know if someone could explain why and if there are work aroun...
casi 2 años ago | 1
| accepted
Why do I get "Out of memory." when reading only 16 chars?
"However what I could think of is that Matlab tries to guess the encoding" I've had discussions with Mathworks support about th...
casi 2 años ago | 1
| accepted
alternative rounding method when using histcounts
"histcounts makes a rounding decison when a value is exactly on a a bin edge." No, you misunderstand how histcounts works. As I...
casi 2 años ago | 0
| accepted
How can I import and then plot 16 files with .out extension using one for loop?
"Would you please tell me a general code to import any type of extension" There isn't. How you import a file completely depends...
casi 2 años ago | 1
access component with variable
See Generate field names from variables which also applies to class properties. for i = 1:numel(components) %prefer numel to l...
casi 2 años ago | 0
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Binary to decimal converter
"The problem is that when I enter digits greater than 16" You mean when you enter more than 16 digits? Indeed your code cannot...
casi 2 años ago | 0
Mex file. error in passing data.
Your code behaves exactly as I would expect: fills elements l1 to l2 of CE with twice the first element of C. I suggest you find...
casi 2 años ago | 1
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