plt.plot()
usually accepts x,y and format. But if I pass third argument as data another line is plotted. I can't understand the relationship.
x=np.linspace(0,10,5)
plt.plot(x,x,x,label='linear')
plt.grid()
Created plot:
This page of the docs outlines the call signatures for matplotlib.pyplot.plt()
. Specifically relevant here is the signature
plot([x], y, [fmt], [x2], y2, [fmt2], ..., **kwargs)
And the parameter description
x, y : array-like or scalar
The horizontal and vertical components of the data points.
x
values are optional and default torange(len(y))
.
When you do something like
plt.plot(x,x,x)
You are actually specifying a first set of x
values followed by the corresponding y
values and then a second set of y
values which are paired with the default x
values of range(len(y))
and plotted, resulting in two lines.
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