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FDTD 1D with scattered field /total field boundary
How to implement total/ scattered field boundary so that there is no reflection on the TF SF boundary due to numerical dispersio...

bijna 10 jaar ago | 0 answers | 0

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How to generate random purmutation of string matrix ?
I would like to have binary mask matrix of sub-block matrices of 1s and 0s that are random inside the big matrix . The way i am...

bijna 10 jaar ago | 2 answers | 0

2

answers

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How to add noise to rect fuction (rectangle) ?
How to add noise to the edges of 2D rect function? While all the rest is 1 and 0. So that the lines are not straight but still h...

ongeveer 10 jaar ago | 2 answers | 0

2

answers

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How to save jpeg image of data with custom colormap without using a .fig file?
I have large data (2Gb) that I have troubles plotting with pcolor or surf ? How can I save an jpeg image of contour map plot ...

ongeveer 10 jaar ago | 1 answer | 0

1

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How to visualize large data (2Gb) with pcolor or make jpeg ?
How can I plot with pcolor or surf large data ~ 2Gb ? An image like jpeg will be fine too. I can not tell if Matlab complains...

ongeveer 10 jaar ago | 0 answers | 0

0

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How to get diffraction pattern (fft2) from image of double slit(jpeg image)
I would like to obtain the diffraction pattern from double slit. How can I set all blacks to 0 and all white to 1 so that the ...

ongeveer 10 jaar ago | 1 answer | 0

1

answer

Question


Direct 2D FFT from sinogram. Polar to cartesian grid interpolation in Matlab
down vote favorite In the theory of tomography imaging a sinogram is recorderded, which is series of projections at diffe...

ongeveer 10 jaar ago | 1 answer | 0

1

answer

Question


FFT beam propagation time and space
I can propagate in space lets say gaussian beam with fft beam propagation method. How one adds time evolution of short pulse...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


How to plot projections of plot3(X,Y,Z) on same 3D graph
How can I plot on same 3D graph of plot3, the projections on XY and so on. X Y Z are vectors similar to the matlab example ht...

meer dan 10 jaar ago | 1 answer | 1

1

answer

Question


Numerical integration. Integral depends on its previous path.
I would like to solve numerically an integral than depends on its previous path. Integral 7.14 from the attached file. Are t...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


How to compute sqrt of complex number ?
sqrt(z) , (where z=x+iy a general complex number) will have two solutions. I would like to pick up a solution that lies in the f...

ongeveer 12 jaar ago | 1 answer | 0

1

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