Multiple plots with matplotlib - looping

[j.crater]

Hello,
I am tryting to draw multiple plots with matplot lib. plot_general_list is a list of lists - something like
plot_list = [list1, list2, list3, list4...]. So if there are 10 lists in plot_list, I would like to get 10 plots (with data of those lists).
I would like the data in those lists to be plotted in separate plots. I tried this...

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for i in range(len(plot_list)):     plt.figure()     plt.plot(plot_list[i])     plt.show

... but I get no figure drawn. matplotlib works fine since I tried the basic sample (plot[1,2,3,4]) and it works fine.
What did I miss in my code? Thank you!
JC

[Crimson King]

Hey JC,

From what I can see you're missing your () on your plt.show() method call.

It should be plt.show() instead of plt.show

[j.crater]

Hey JC,

From what I can see you're missing your () on your plt.show() method call.

It should be plt.show() instead of plt.show

Hi Crimson King,

You are right, I really was missing parentheses. Although the effect I get now is that one plot shows at a time, until I close it and next one shows up.
Do you know of a way to get all plots to show up in one run? Thanks

[Crimson King]

JC,

To show the plots at the same time on different graphs you'd have to make the plt.show() call outside the for loop:

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for i in plot_list:     plt.figure()     plt.plot(i) plt.show

And if you want to show every plot from the list on the same graph you need to get rid of the plt.figure() call

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for i in plot_list:     plt.plot(i) plt.show

PS: I changed your code a bit, that way of looping thru a list is more pythonic than doing it with i in range(len(plot_list))

[j.crater]

Thanks Crimson King, I was looking for solution for showing all plots at same time on different graphs.

I still have issues when I want to show two graphs (with different functions on them). e.g.:

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for i in plot_list1:    plt.plot(i) plt.show   for j in plot_list2:    plt.plot() plt.show

I get the second graph shown only after closing first one. Do you know how to get both graphs shown at same time, without having to close one first?

---

Ok, I somehow found the answer, though I can't really say I know how it works...

before each plot, I should add the line:
plt.figure()
like this:

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plt.figure() for i in plot_list1:   plt.plot(i)   plt.figure() for j in plot_list2:   plt.plot()   plt.show

[ujjwalrathod007]

hey you can use subplots if it suits you..

[nilamo]

I still have issues when I want to show two graphs (with different functions on them).

You never actually call plt.show(). The parentheses are not optional.

[j.crater]

@ujjwalrathod007 - thanks, I know about subplots, they really are handy in many situations =)
@nilamo - I copied the code from above, which doesn't have parentheses, my mistake, I have them now in code of course =)