How to draw vectors physical 2D 3D vectors in MATLAB

Question

I want to know the simplest way to plot vectors in MATLAB   For example   a    2 3 5   b    1 1 0   c   a   b    I want to visualize this vector addition as head-to-tail parallelogram method  How do I plot these vectors with an arrow-head

User · Answer

I m not sure of a way to do this in 3D  but in 2D you can use the compass command

User · Answer

I agree with Aamir that the submission arrow m from Erik Johnson on the MathWorks File Exchange is a very nice option  You can use it to illustrate the different methods of vector addition like so    Tip-to-tail method   o    0 0 0       Origin a    2 3 5       Vector 1 b    1 1 0       Vector 2 c   a b          Resultant arrowStarts    o  a  o             Starting points for arrows arrowEnds    a  c  c               Ending points for arrows arrow arrowStarts arrowEnds        Plot arrows  Parallelogram method   o    0 0 0       Origin a    2 3 5       Vector 1 b    1 1 0       Vector 2 c   a b          Resultant arrowStarts    o  o  o             Starting points for arrows arrowEnds    a  b  c               Ending points for arrows arrow arrowStarts arrowEnds        Plot arrows hold on  lineX    a 1  b 1   c 1  c 1        X data for lines lineY    a 2  b 2   c 2  c 2        Y data for lines lineZ    a 3  b 3   c 3  c 3        Z data for lines line lineX lineY lineZ  Color   k   LineStyle            Plot lines

User · Answer

I did it this way   2D    vectors I want to plot as rows  XSTART  YSTART   XDIR  YDIR  rays       1 2   1 0     3 3   0 1     0 1   2 0     2 0   0 2          quiver plot quiver  rays    1    rays    2    rays    3    rays    4        3D    vectors I want to plot as rows  XSTART  YSTART  ZSTART   XDIR  YDIR  ZDIR  rays       1 2 0  1 0 0    3 3 2  0 1 -1     0 1 -1  2 0 8    2 0 0  0 2 1         quiver plot quiver3  rays    1    rays    2    rays    3    rays    4    rays    5    rays    6        Based on the quiver and quiver3 documentation

User · Answer

a    2 3 5   b    1 1 0   c   a b   starts   zeros 3 3   ends    a b c    quiver3 starts   1   starts   2   starts   3   ends   1   ends   2   ends   3   axis equal

User · Answer

I found this arrow start  end  function on MATLAB Central which is perfect for this purpose of drawing vectors with true magnitude and direction

User · Answer

draw simple vector from pt a to pt b               wtr   with respect to             scale 0  for drawin  vectors with true scale             a    10 20 30    wrt origine O 0 0 0              b    10 10 20    wrt origine O 0 0 0               starts a   a now is the origine of my vector to draw  from a to b  so we made a translation from point O to point  a   to vector a              c   b-a   c is the new coordinates of b wrt origine a              ends c               plot3 a 1  a 2  a 3    b               hold on             plot3 b 1  b 2  b 3    g                 quiver3 starts   1   starts   2   starts   3   ends   1   ends   2   ends   3  scale    Use scale   0 to plot the vectors without the automatic scaling                axis equal             hold off

[matlab] How to draw vectors (physical 2D/3D vectors) in MATLAB?

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