Community Profile # Joel Handy

Last seen: 1 jour ago Active since 2019

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I'm trying to create a protected model from a Simulink model contained embedded matlab functions using coder.ceval() to pull in ...

6 mois ago | 0 answers | 0

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how to plot all the results of for loop in one figure on same axis?
Just move the figure(); command to before the for loop.

presque 3 ans ago | 0

How to flip my image
The are a few problems with your code. First, if you want the image, you dont want to transpose. That will flip and rotate, As...

presque 3 ans ago | 1

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How to split an array into smaller unequal-sized arrays dependend on array-column values
Histcounts can be used to pin the data the way you want. [~,~,BIN] = histcounts(mainArray(:,1), 0:10:500) subArray1 = mainArr...

presque 3 ans ago | 0

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if statement inside for loop location issues
This is exactly the situation where you want to use logical indexing. https://blogs.mathworks.com/loren/2013/02/20/logical-inde...

presque 3 ans ago | 0

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Plotting orientation in 3-D plot using quaternion
Check out this link which explains the quaternion mah required. https://gamedev.stackexchange.com/questions/28395/rotating-vect...

environ 3 ans ago | 0

How can i read multiple values in a string?
I believe a regular expression along these lines is what you are looking for. data = regexp('1º:" H:2T:16799C:7| H:2T:16803C:15...

environ 3 ans ago | 0

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Surface fitting for 3D point cloud acquired by photogrammetry
Take a look at griddata and scatteredInterpolant griddata Interpolates scattered data - generally to produce gridded data Vq =...

environ 3 ans ago | 2

Can this be written in a much better way for fast computations?
The code below will do what you are asking without needing a loop. coast=magic(14400); di_max=100; mx=14400; my=14400; [i...

environ 3 ans ago | 1

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How to assign numbers
Something like this? table = randi([0 10],10,10); tableMax = max(max(table)); table(table==0) = tableMax+1; % Or Just table...

environ 3 ans ago | 0

How can i do object oriented programming in Simulink?
It sounds like a simple masked subsystem may suit your needs. Its not object oriented programming but you can use it to define ...

environ 3 ans ago | 0

How could I extract the first two columns, and leave the next two and then so on from a matrix
% Set up example data set A = eye(100); A(1,:) = 1:100; numCols = size(A,2); % Answer B = A(:,sort([1:4:numCols 2:4:numCo...

environ 3 ans ago | 0

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A simple matrix question
A = [1 2 3 4 5]; B = fliplr(A) % Flip matrix in left/right direction A = [1; 2; 3; 4; 5]; B = flipud(A) ...

environ 3 ans ago | 0

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how can i convert the ip address into decimal
ipFields = uint8(str2double(split('192.192.192.2', '.')))'; typecast(fliplr(ipFields), 'uint32') % Explanation dec2hex(192)...

environ 3 ans ago | 1

unique set from file
c = {'!' 'a:' 'l' 't' '@' [] [] '?' 'a:' 'l' 't' '@' 's' 't' '/' 'a' 'b' 'a' 'n' 'd' 'A~'}; for rowIdx = 1:size(c,1) ...

environ 3 ans ago | 0

How to divide a structure into sub-structures based on a condition
I think this is what you are looking for. You will end up with two struture arrays both smaller than the original structure arr...

environ 3 ans ago | 0

What are the toolboxes on my license
Just type "ver" to find out what toolboxes you have ver This question has a pretty thorough description of product activation ...

environ 3 ans ago | 0

There appears to be two issues with your code. The first is that datetime doesn't take a cell array of numbers so you need to c...

environ 3 ans ago | 0

How do I apply unique names to structs created in a for loop?
Does this help at all? I'm not completely sure I understand the nuances of your question, but If I had a folder structure like ...

environ 3 ans ago | 0

Finding a max in a column and making all other elements equal to zero
a= [ 1 3 3; 3 1 2; 2 1 1 ] numRows = size(a,1); maxvals = max(a) a(a~=repmat(max(a),numRows,1)) = 0 numNonZeroInCol = sum(...

environ 3 ans ago | 0

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Undefined function or variable 'gurobi_write'. in MATLAB R2019a?
I don't know anything about Gurobi, but I do know that in the past, some programs that tie into Matlab need to be installed afte...

environ 3 ans ago | 2

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How to select images from nested folder?
Something like this should work. You will possibly need to add code to appropriately sort your list of images. I've marked whe...

environ 3 ans ago | 2

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Change the certain element after comparison of two arrays
B = A == 0;

environ 3 ans ago | 0

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How do I add an additional column to a cell array based on existing values in another column?
Obviously replace myCellArray with whatever your array is called. isTwo = cellfun(@(x) x == 2, myCellArray(:,2)); myCellArray(...

environ 3 ans ago | 0

Remove rows based on length of column value
I think this code will do what you want. It will make a vector with the same number of rows as A, with each element being the nu...

environ 3 ans ago | 1

How to plot IMU data (XYZ_AER)?
A quiver plot might help you. it essentially lets you draw vectors in 3D space. https://www.mathworks.com/help/matlab/ref/quiv...

environ 3 ans ago | 0

Question

path(pathdef) does not reset the matlab path
I know the question, "How do I restore the Matlab path to it's state at program start up," has been asked a million times and fo...

environ 3 ans ago | 0 answers | 0

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Translating points and finding correct normal vector
Sounds like what you really want to do is "shrink" your perimiter. Is that accurate? If so, projecting points back along these...

plus de 3 ans ago | 0

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Question

How can I easily give all of my simulink random number generators different but controlable seeds?
Simulink random number blocks, as one would expect, output the exact same stream of numbers given the same seed. This becomes p...

plus de 3 ans ago | 1 answer | 0