split a vector into normal and tangential component
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i have E field vectors(x,y,z) of two ports.i want to find out the tangential magnitude of the E field vectors. to calculate th tangential magnitude i need to split the normal and tangential components of the total efield vector. i have tried some formulas. but that did not work out.
can somebody just me the way to split the tangential and normal components of a vector in MATLAB?
5 个评论
Torsten
2017-11-7
Normal and tangential to what ?
Best wishes
Torsten.
Guillaume
2017-11-7
A vector does not have intrisic tangential and normal components. The tangential and normal components are always relative to a surface and at a point on that surface.
So, to answer your question, you need to have an equation for the surface (or a list of point) and the location of the point on that surface at which you want to decompose that vector.
Sasi umaiyal
2017-11-7
编辑：Guillaume
2017-11-7
Torsten
2017-11-7
So the points that make up the surface and the points where you are given the vector field E do not necessarily coincide ?
Best wishes
Torsten.
David Sziroczak
2017-11-7
Here are the steps you need to do:
1) You need to generate a unit vector which is normal to your surface.
2) Then generate the scalar product of that vector and your E field vector.
3) Multiply the unit vector with the scalar value: this will give you the normal to surface component.
4) To get the tangential, substract the normal component from the E vector.
Hope this helps,
Best regards,
David
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