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Pinpress


University of Pennsylvania

Actif depuis 2012

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R2014a slower than R2013a
On the same computer, when running imdilate, R2014a takes 4.1 sec while it was 3.7 sec on R2013a. this is consistent after multi...

environ 10 ans il y a | 1 réponse | 0

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réponse

Question


Is this called "conjugate rotational axis"?
Hi, I have a left-right symmetric object rotating about an axis. Now if I choose a different rotational axis, the object will...

plus de 10 ans il y a | 1 réponse | 0

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réponse

Question


mesh display with element values
Hi, If I use patch to display a mesh, I can color code the mesh surface by specifying the nodal values. However, from finite ...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


Eqivalent rigid body rotation from translation and rotation
Hi, In 2D, I can see that any combinations of translation plus rotation about the origin can be transformed into a pure rotat...

plus de 11 ans il y a | 4 réponses | 0

4

réponses

Question


Matlab inversion and optimization
I am hoping to get an inversion scheme to work in a high dimension. To make it simple, let me illustrate it in a 2D case. Supp...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Réponse apportée
"mesh" or "surf" display problem on Windows 7
Thanks. The graphics card driver is up-to-date. Tried both software and hardware opengl, same effect and no cure. Also tried all...

plus de 11 ans il y a | 0

Réponse apportée
"mesh" or "surf" display problem on Windows 7
OK -- some more discovery here. I think the problem is with the "opengl" renderer. If I change to "zbuffer", the problem is gone...

plus de 11 ans il y a | 0

Question


"mesh" or "surf" display problem on Windows 7
Hi, This is strange and I scratched my head but could't figure out why. Very simple matlab code: [x,y] = meshgrid(1:10,1...

plus de 11 ans il y a | 10 réponses | 0

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Question


problem with repeating index values
Hi, Suppose a = [0 0 0 0]; if I do: a([1 1 2 2 2])= a([1 1 2 2 2])+ 1; I get: [1 1 0 0]; However, what I reall...

presque 12 ans il y a | 5 réponses | 0

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Question


How to do this efficiently?
Hi, I have a number of (>30k) 3D curved lines stored in a cell. They are of different lengths. What would be the best way to ...

presque 12 ans il y a | 1 réponse | 0

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réponse

Question


how to find maximum shear/normal strain
Hi, This is a general mechanics question. Suppose the 3D strain state at a point is known, so is the coordinate system, XYZ. ...

presque 12 ans il y a | 1 réponse | 0

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Réponse apportée
inpolygon equivalent function in 3D?
Thanks for the tip. However, I don't think that's a good solution. I believe it tries to generate a convex hull using delaunayn....

environ 12 ans il y a | 2

Réponse apportée
loading 3D big array
im(:,:,100)?? or squeeze(im(:, 1000, :)) ??

environ 12 ans il y a | 0

Question


inpolygon equivalent function in 3D?
Hi, I need to find a way to determine if a large number of points are inside a closed polygon expressed by either a triangula...

environ 12 ans il y a | 3 réponses | 2

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