Isn’t that what quiver does? Or am I misunderstanding the question?

2010/5/3 aditya bhargava <bluemangroupie@…287…>

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Thanks Johan and Matthias,

I was just wondering if there was a built-in way to do this in matplotlib. It seems like it would be a useful method to have.Adit

2010/5/3 Johan Grönqvist <johan.gronqvist@…287…>

2010-05-02 20:19, aditya bhargava skrev:

Is there a straightforward way of plotting a vector in matplotlib?

Suppose I want to plot the vector [1 2]’. If I pass this vector in to

plot(), I get the line that passes through (0,1), (1,2). Instead I want

the line that passes through (0,0),(1,2).

I use pyplot.Arrow to visualize displacement fields.

This is a snippet copied from the code I use (it sits in a loop over all

vectors I want to plot):

`arr = plt.Arrow(x, y, dx, dy) plt.gca().add_patch(arr)`

In your case, you would have (x, y) = (0, 0) and (dx, dy) = (1, 2).

Regards

Johan

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