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Plot in a function

asked 2015-12-23 06:54:43 -0500

Neabfi gravatar image

updated 2015-12-23 08:46:32 -0500


Is it normal that i can't plot in a function ?

Without a function:

plot(point([1, 1]))

image description

With a function:

def toto():
    plot(point([1, 1]))

image description

Thanks in advance !

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Can you provide the code you used?

vdelecroix gravatar imagevdelecroix ( 2015-12-23 08:31:12 -0500 )edit

All the code is in the pictures. :(

Neabfi gravatar imageNeabfi ( 2015-12-23 08:37:31 -0500 )edit

It is better to write the code instead of providing picture. If I want to try the code it is simpler for me to do a copy paste... that is not possible with pictures.

vdelecroix gravatar imagevdelecroix ( 2015-12-23 08:41:03 -0500 )edit

Sorry, I have edited my post.

Neabfi gravatar imageNeabfi ( 2015-12-23 08:47:00 -0500 )edit

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answered 2015-12-23 08:44:51 -0500

First of all in your code you can replace plot(point([1,1])) by point([1,1]).

And the answer is yes. All plot functions return a graphic objects that can be further manipulated. In your function you are creating a graphic but not using it at all. The following code shows what is a graphic

sage: G = point([1,1])
sage: type(G)
<class ''>
sage: G    # will show the graphics

If you want that your function shows the graphic you can do

def my_graphic():
    G = point([1,1])

If you want that your function returns a graphic you can do

def my_graphic():
    G = point([1,1])
    return G
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Thanks ! If I call several times the function, how can I concatenate the graphics to show them in one graph ?

Neabfi gravatar imageNeabfi ( 2015-12-23 08:53:45 -0500 )edit

Just use addition

sage: point([1,1]) + point([3,2])
vdelecroix gravatar imagevdelecroix ( 2015-12-23 08:56:03 -0500 )edit

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Asked: 2015-12-23 06:54:43 -0500

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Last updated: Dec 23 '15