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Clarify support for 2D coordinate inputs to streamplot. #20975

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Sep 2, 2021
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Clarify support for 2D coordinate inputs to streamplot. #20975

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4 changes: 3 additions & 1 deletion lib/matplotlib/streamplot.py
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Expand Up @@ -26,7 +26,9 @@ def streamplot(axes, x, y, u, v, density=1, linewidth=None, color=None,
Parameters
----------
x, y : 1D/2D arrays
Evenly spaced strictly increasing arrays to make a grid.
Evenly spaced strictly increasing arrays to make a grid. If 2D, all
rows of *x* must be equal and all columns of *y* must be equal; i.e.,
they must be as if generated by ``np.meshgrid(x_1d, y_1d)``.
u, v : 2D arrays
*x* and *y*-velocities. The number of rows and columns must match
the length of *y* and *x*, respectively.
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