How to project given vectors in matlab

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Parmeet Bhogal
Parmeet Bhogal 2017-7-1
编辑： James Tursa 2017-7-1
v1 = [1.12;2.10;7.03;4.15;6.13] v2 = [1;-1.01;1.02;-1.03;1.04]
I need to calculate projection of v1 onto v2 how would I code this into matlab?
  1 个评论
John D'Errico
John D'Errico 2017-7-1
编辑：John D'Errico 2017-7-1
A dot product.
https://math.oregonstate.edu/home/programs/undergrad/CalculusQuestStudyGuides/vcalc/dotprod/dotprod.html
help dot
You will need the norm of the vector v1.
help norm

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回答（1 个）

James Tursa
James Tursa 2017-7-1
编辑：James Tursa 2017-7-1
E.g., see this link
https://en.wikipedia.org/wiki/Vector_projection
u = v2/norm(v2);
result = dot(v1,u)*u;

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