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Joel Handy


28 total contributions since 2019

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Answered
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.

24 dagar ago | 0

Answered
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...

ungefär en månad ago | 0

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Answered
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...

ungefär en månad ago | 0

| accepted

Answered
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...

ungefär en månad ago | 0

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Answered
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...

ungefär en månad ago | 0

Answered
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...

ungefär en månad ago | 0

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Answered
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 =...

ungefär en månad ago | 1

Answered
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...

ungefär en månad ago | 1

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Answered
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...

ungefär 2 månader ago | 0

Answered
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 ...

ungefär 2 månader ago | 0

Answered
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...

ungefär 2 månader ago | 0

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Answered
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) ...

ungefär 2 månader ago | 0

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

ungefär 2 månader ago | 0

Answered
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) ...

ungefär 2 månader ago | 0

Answered
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...

ungefär 2 månader ago | 0

Answered
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 ...

ungefär 2 månader ago | 0

Answered
Issue with loading datetime from table
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...

ungefär 2 månader ago | 0

Answered
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 ...

2 månader ago | 0

Answered
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(...

2 månader ago | 0

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Answered
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...

2 månader ago | 1

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Answered
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...

2 månader ago | 1

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

3 månader ago | 0

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Answered
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(...

3 månader ago | 0

Answered
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...

4 månader ago | 1

Answered
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...

4 månader 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...

4 månader ago | 0 answers | 0

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answers

Answered
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...

7 månader 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...

7 månader ago | 1 answer | 0

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