Search Results

You can even speed up your MATLAB code by rewriting the inner loop: for nx=1:xSize DataTemp(:,nx)=circshift(Data(:,nx,nT),nShift(nR,nx)); end RawDataKK(:,nT,nR)=sum(DataTemp,2); Here you are copying … Regarding the code style: Even though it is really common to see MATLAB code with very few spaces in it, adding spaces around operators and after commas really helps readability. …

MATLAB has a numeric gamma function. Simply leaving out the call to sym in your code should reduce the computational cost of your code by a few orders of magnitude. … A struct in MATLAB is very much like a cell array, but the indexing is done with a name instead of a number. …

To speed up code you have to start with two things: Pay attention to the warnings that the MATLAB Editor gives you: Four lines have red squiggles underneath, hovering over them says "Variable appears … In the MATLAB Editor, there is a button "Run", if you click the bottom part it expands into a menu. The top options here is "Run and Time". …

The function Triangle() is clearly a script that you turned into a function. I personally don't like putting clc, clear and close at the top of my scripts, but I see this a lot, and it's not a terribl …

Instead of A = Data{n,3}(18:length(Data{n,3}),1); do A = Data{n,3}(18:end,1); Repeatedly extending an array Yes, you can extend an array in MATLAB. … Not using vectorized operations Loops are rather fast nowadays in MATLAB, so much so that vectorizing an operation (removing the explicit loop in favour of vectorized operations) is not guaranteed to improve …

It was first posted on the MATLAB File Exchange by senior MATLAB developer Steve Eddins (here is his blog post at the time). … I would recommend against explicitly setting the renderer, and let MATLAB pick the best one for the graphics you're displaying. …

MATLAB Editor warnings On these two lines, the MATLAB Editor gives a warning "Use of brackets [] is unnecessary". … Note that if we name the input and output variable the same (here frame), and when calling the function we use the same variable as both input and output (videoFrame in your code), then MATLAB will optimize …

MATLAB first included a JIT (Just In Time) compiler in 2006 I think, and it has been steadily improving over the years. … In MATLAB R2015b, they introduced a completely new JIT, and since then the difference between trivial loops and vectorized code is no longer important, and a more complex loop is oftentimes faster than …

Though MATLAB allows to expand the size of a matrix by assigning to elements outside its bounds, it is always best to preallocate the array to its final size. … It is common in MATLAB code to not use spaces, but I think code is more readable with spaces in it. Especially around the = assignment operator. …

My only comment here is that AIED = AverageIntraEuclideanDistancesPar(Collection) VIED = VarIntraEuclideanDistancesPar(Collection) computes the average twice, since VarIntraEuclideanDistancesPar also …

Your test cases don’t test the error condition handling: if size(X1)~=size(X2) fprintf("Sizes of inputs are not equal!\n"); return; end In the case of two inputs with different dimensionality …

This syntax is equal to the old-fashioned [M,I] = max(A(:)), which will work even in 20-year-old versions of MATLAB. …

There's not a whole lot of things to comment on this code. My biggest gripe with it is the comparison of a boolean value with false. I see this a lot, it is a common "mistake". There always exist the …

First I'll discuss some MATLAB syntax and style improvements. OutputCollection{x, y, z} = {Output}; This puts Output into a 1x1 cell array, and assigns this cell array into the larger cell array. … Simpler would be: cubeColor = [1 1 1] * input_array(x, y, z); plotcube([1 1 1], [x - 1 y - 1 z - 1], alpha, cubeColor); The MATLAB Editor highlights this line: IDCT3DOutput(n1+1,n2+1,n3+1)=sm; and …

I created a matrix X as suggested in the math, and vectorized it using reshape, so I could compare the results with an explicit implementation in MATLAB. … If I would input the wrong matrices, the MEX-file (and usually all of MATLAB) would crash. …