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Guillaume


University of Brighton

6.604 total contributions since 2012

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Answered
How to export a struct to flat file?
fnames = fieldnames(MCI1); c = struct2cell(MCI1)'; heights = cellfun(@numel, c(:, 4)); t = [cell2table(repelem(c(:, [1 2]), h...

ongeveer 9 uur ago | 1

| accepted

Answered
i need to convert a folder of 200 .jpg images to .mat (to create 200 separate .mat files). i know there should be an easy matlab for loop to do this but I need help (newbie). thanks!
folder = 'C:\somewhere\somefolder'; filelist = dir(fullfile(folder, '*.jpg')); %get list of all jpg files in the folder matna...

ongeveer 14 uur ago | 1

Answered
function variable undefined. How to declare it ? Says Totalcost not defined
What you have written is a script (name unknown) with a local function called Budgetcompare. A function (local or normal) never ...

ongeveer 14 uur ago | 0

Answered
Extract column data based on date
Most likely (for lack of a sample file to test code with): wavedata = readtimetable('C:\somewhere\somefile.csv'); %requires R2...

ongeveer 17 uur ago | 0

Answered
Conversion of multidimensional cell into string
Taking a guess here, since you're still not using matlab syntax for your example: C = {2, [0,1,0]; 73, [0,1,1,1]; ...

ongeveer 17 uur ago | 0

Answered
How to order a matrix?
how can i do that? Use uniquetol instead of unique. Note that the 'rows' option of unique is 'ByRows', true with uniquetol [~,...

ongeveer 19 uur ago | 0

Answered
Correct error in logical indexing
You use length on a matrix. If your matrix happens to only have one row, your code will error since length will return the numbe...

ongeveer 21 uur ago | 3

Answered
Save data in excel sheet using pushbutton.
The problem is either with framecount or dia. We have no idea what size they are nor what their type is. It's also unclear why y...

10 dagen ago | 0

Answered
Error when trying to load .dll
You probably need to add an 'IncludePath' parameter to your loadlibrary call to specify which directory the include file rtw_con...

10 dagen ago | 0

Answered
Calculation with Certain Portion of the Matrices
The only way you're going to avoid that sawtooth effect is by starting with a meshgridded x and angle and calculating y from tha...

10 dagen ago | 0

| accepted

Answered
Checking the range of input arguments
Do you actually need to use varargin? It doesn't appear to server any purpose here, if you always assign the same variable.It lo...

10 dagen ago | 1

| accepted

Answered
make true statements return value that it is associated with
" I already have a for loop to set up for the intersect values " It's very likely that a loop is not needed at all. Show us tha...

12 dagen ago | 0

Answered
Mean value of array
Trivially solved with a convolution A=[1 2 3 4 5 6 7 8 ; 9 10 11 12 13 14 15 16; 17 18 19 20 21 22 23 24; 25 26 27 ...

12 dagen ago | 0

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Answered
Putting two seperate columns in to one variable and how to insert a Array into mysql
Assuming that by column, you mean column vector use the horizontal concatenation operation , instead of the vertical concatenati...

12 dagen ago | 0

Answered
Vectors seen as a combination of other vector's elements
This is the generic version of Madhan's answer. Works for any (reasonable!) number of inputs. in = {[1, 2, 3], [4, 5], 6}; %ce...

12 dagen ago | 0

Answered
Index in position 2 exceeds array bounds (must not exceed 1).
T = Robot.fkine([Th_1 Th_2 Th_3]); handles.Pos_X.String = num2str(floor(T(1,4))); Your second line assumes that T (a.k.a Robot...

12 dagen ago | 0

| accepted

Answered
make a Sequence number
Layout=[1,1,1;2,2,2;3,2,1;91,3,1;95,4,2;98,4,0.5]; A=[1,2;1,3;3,91;91,95;91,98] searchreplace = [91, 4; 95, 5; 98, 6]; %2 col...

12 dagen ago | 0

| accepted

Answered
How to find the unique values between two datasets?
Please use valid matlab syntax for your example so we don't have to wonder what your inputs actually are. A={(1,2,3),(1,2,4),(1,...

12 dagen ago | 0

| accepted

Answered
setting range for pixel intensity
You have to decide if your image is greyscale or colour. You obviously can't set a pixel to green in a greyscale image without f...

13 dagen ago | 0

Answered
Array indices must be positive integers or logical values.
They're not meant to be empty Well, then you go back through the code to find out why they're empty. Going up we see, ta = t...

13 dagen ago | 0

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Answered
how to write a script that outerjoins multiple data files
Something like (untested, expect typos): folder = 'C:\dropbox'; filelist = dir(fullfile(folder, 'File*.csv')); for fileidx = ...

14 dagen ago | 1

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Answered
Cell array / Concatenate non - NaN results
You mention a regex. You'd be better off fixing the regex that produces that output. But if that's not an option: A = { [NaN] ...

14 dagen ago | 0

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Answered
Sum of a row
sum(yourmatrix, 2) will give you the sum of each row as 3x1 vector. sum(yourmatrix(1, :)) will give you the sum of just the f...

14 dagen ago | 0

Answered
Continue a loop when entered an option
Just wrap your code in a while loop: option = 1; while option == 1 %... your code here option = input('Do you want t...

14 dagen ago | 0

Answered
Use of break statement causing issue
I'm not sure what you think break does. It completely stops the loop. So, when your code hits break, you stop the i loop and the...

14 dagen ago | 0

Answered
changing input variable loop
I won't belittle the point about numbered variables. Read Stephen and Jan links. Suffice to say, if you start numbering or namin...

14 dagen ago | 1

Answered
how to make polyfit on call arrays?
It sounds like by punch you mean horizontally concatenate. In which case, what you want is easy to do: %b a cell array of 3xN m...

14 dagen ago | 0

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Answered
process an image using a mask
No radon and iradon do not know about masking. You will have to pass the whole image. I'm not very familiar with these functions...

14 dagen ago | 0

Answered
Matlab iteration through excel rows
It sounds like your spreadsheet has a row header and you want to find the columns with a particular header. That can be triviall...

14 dagen ago | 0

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Answered
Subtraction of 2 matrices of the same dimensions and values, gives large floating point values instead of 0!
"gives large floating point values" " i get values like e-17" 1e-17 is 0.00000000000000001, that's not large!. That's 15 order...

14 dagen ago | 1

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