subplot in matplotlib.pyplot from function

Question

I tried to create subplot by using some defined function, which returns directly plot. But I can't figure out why this is not working. for example:

my plot function is something like:

def plot_data(data):
    plt.plot(data)
    return plt.show()

suppose my data are:

data1 = np.random.rand(50)
data2 = np.random.rand(50)
data3 = np.random.rand(50)
data4 = np.random.rand(50)

and I am trying to create subplot with:

fig, ax = plt.subplots(nrows=2, ncols=2)

plt.subplot(2, 2, 1)
plot_data(data)

plt.subplot(2, 2, 2)
plot_data(data)

plt.subplot(2, 2, 3)
plot_data(data)

plt.subplot(2, 2, 4)
plot_data(data)

plt.tight_layout()
plt.show()

it returns :

It might be worth noting that it is not necessary to have calls to plt.subplot() and fig, ax = plt.subplots(nrows=2, ncols=2) — DavidG
– DavidG, Commented Feb 16, 2018 at 12:59

arnaud · Accepted Answer · 2018-02-16 12:51:33Z

1

Just remove the return plt.show() in your plot_data() function. That'll work.

In that case, it might be useless to even use that extra function plot_data() and you can directly use plt.plot(data) :-)

answered Feb 16, 2018 at 12:51

arnaud

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2 Comments

bikuser Over a year ago

haha it works for me...Actually, in my real function, I have many calculations so I have defined function to plot..anyways thanks a lot :)

arnaud Over a year ago

Heheh yes sure, if you have additional stuffs to do functions is a good habit.

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