There is nothing unreliable about numpy’s behavior in the examples you show as compared to MATLAB, nor do any of the examples you show have anything to do with floating-point issues (with one exception). For the rounding behavior, MATLAB is the one doing it wrong here. Numpy is following the IEEE standard for rounding. The … Read more
You should preallocate a matrix before your loop, and in the loop you just insert the vectors directly in the columns (or rows). Like: A= zeros(10, 10); for k in 1: 10 A(:, k)= %# result of your processing end
The use of the return keyword is different in a Python function vs. a MATLAB function. In a MATLAB function, the Left Hand Side (LHS) arguments define what needs to be defined within the function body prior to returning. function y = foo(x) y = 1; end If you use a return statement to end … Read more
In your commented line, % n=[0:10:100]; you create a vector with values from 0 to 100, with spacing 10, ie [0 10 20 30 40 50 60 70 80 90 100]. With your uncommented line, n=[0 3 5 10 50 100]; you have the values you specify. Since they’re not the same input, you won’t … Read more
For this sort of thing, Psychtoolbox is your friend. I don’t have experience with it, but it is a MATLAB toolbox perfectly designed for full screen visual stimuli. The toolbox contains an existing example called ‘moving line demo‘: MovingLineDemo([xv=10][, twolines=0][, screenid=max]) Shows a pair of vertical lines, or a single line, which travel horizontally across … Read more