CODEWITHSUNDEEP
pythonpython-3.xmatplotlib
mralarcon
mralarcon

Reputation: 37

TypeError with quiver plots

I'm trying to make a quiver plot in Jupyter Notebook but I'm getting a TypeError the way I'm defining my u,v arrays. I have an array ug with the velocity norm (it only has x-component) so I'm doing:

ug = [0.0 0.072 0.128 0.16800000000000004 0.19200000000000006 0.20000000000000007 0.19200000000000006 0.16800000000000004 0.128 0.07200000000000001 1.734723475976807e-17]                    
xg = np.linspace(0,l,int(l/50))
yg = np.linspace(0,d,len(ug))

(Xg,Yg) = np.meshgrid(xg,yg)
(Vg,Ug) = np.meshgrid(0*xg,ug)

plt.quiver(Xg,Yg,Ug,Vg)

The last line, the call to quiver, raises the following error:

TypeError: ufunc 'isfinite' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''

Why does quiver reject these arrays?

Upvotes: 0

Views: 347

Answers (1)

mralarcon
mralarcon

Reputation: 37

It seems that ug must be a list, instead of a np.array. I've changed:

ug = list(ud[::4])

and it works!

Upvotes: 1

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