MATLAB: Speed up code on GPU by removing nested for loops

for loopParallel Computing Toolboxparfor

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f1 = exp((1i*pi) * (ii(:) + jj(:).'));

or on older MATLAB version (without auto expansion).

f1 = exp(bsxfun(@plus, (1i*pi) * ii(:), jj(:).'))

Avoid using ARRAYFUN with you like clear and fast code.

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MATLAB: Function numden() seems to return false solution! Where is the mistake

isAlways(expr2 == numExpr2/denExpr2)

returns 1 (true).

Because the expression involves a number of terms, expressing it as numerator and denominator gives an expression that looks different enough from the original expression that MATLAB has a difficult time simplifying it to 0, especially working over the complex domain in combination with the abs()

MATLAB: Is the contour plot flipped i.e. the value that should be at the bottom right is plotted on the top left

YOu need not to use loops....it is very slow. Check the below code:

Nx = 100 ; Ny = 100 ; 
x = linspace(0,1,Nx) ; 
y = linspace(0,1,Ny) ; 
[X,Y] = meshgrid(x,y) ; 
phi = 500*exp(-50*((1-X).^2+Y.^2))+100*X.*(1-Y) ; 
contour(X,Y,phi)

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Related Solutions

MATLAB: Function numden() seems to return false solution! Where is the mistake

MATLAB: Is the contour plot flipped i.e. the value that should be at the bottom right is plotted on the top left

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