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# Yang Lu

### City, University of London

5 total contributions since 2018

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Answered
find the index of Curve intersections
Hi, I use InterX reference from https://uk.mathworks.com/matlabcentral/fileexchange/11837-fast-and-robust-curve-intersections t...

12 months ago | 0

Answered
how to rotate coordiante system about Z axis first then rotate about about the new Y axis.
Ry_new = Rz*Ry*Rz^(-1) so Ry_new*Rz = Rz*Ry*Rz^(-1)*Rz = Rz*Ry Hi David, Regarding to the Ry_new, I do not understand why d...

12 months ago | 0

Question

find the index of Curve intersections
Hi all, I am programing to find the indexes of the intersections of two lines. I use the code Curve intersection by NS to find ...

1 year ago | 2 answers | 0

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answers

Question

Projection between two coordinate systems
<</matlabcentral/answers/uploaded_files/133503/local%20coordinate.PNG>> I have two coordinate systems as the picture shown....

1 year ago | 1 answer | 0

### 1

answer

Question

how to rotate coordiante system about Z axis first then rotate about about the new Y axis.
Assume two coordinate systems, one is the global coordinate system(XYZ) and another is a local coordinate system which is obtain...

1 year ago | 2 answers | 0

answers