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I'd like to add quivers to an existing figure with plotly (python). But the only peace of documentation I could find either create only one quiver (here) or a brand new figure (there).

Here's the example on plotly doc :

import plotly.figure_factory as ff

import numpy as np

x,y = np.meshgrid(np.arange(0, 2, .2), np.arange(0, 2, .2))
u = np.cos(x)*y
v = np.sin(x)*y

fig = ff.create_quiver(x, y, u, v)
fig.show()

If anyone has a better understanding of plotly that I do, I'd appreciate a lot a few explanations!

Thanks a lot,

vestland
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hulyce
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  • Do you mind to provide the existing figure or a full [mcve](/help/mcve)? It seems to me you could just use `add_trace`. – rpanai Sep 26 '20 at 20:27

1 Answers1

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Assuming that you'd like to add quivers to an existing ff.create_quiver() figure, all you have to do is:

  1. Create fig1 = ff.create_quiver(x, y, u, v),
  2. create another figure with other attributes fig2 = ff.create_quiver(x, y, u*0.9, v*2),
  3. and add the resulting fig2.data to fig1 using fig1.add_traces(data = fig2.data)

Plot:

enter image description here

Complete code:

import plotly.figure_factory as ff
import numpy as np

x,y = np.meshgrid(np.arange(0, 2, .2), np.arange(0, 2, .2))
u = np.cos(x)*y
v = np.sin(x)*y

fig1 = ff.create_quiver(x, y, u, v)

fig2 = ff.create_quiver(x, y, u*0.9, v*2)
fig1.add_traces(data = fig2.data)
fig1.show()
vestland
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  • Great thanks, it solves the question I asked, not my problem. I'll ask a more precise one. Thanks again! – hulyce Sep 27 '20 at 14:36
  • @hulyce OK. Thanks for accepting my answer anyway. I'll keep an eye open for what you *really* wanted to achieve. – vestland Sep 27 '20 at 14:54