Difference between revisions of "Matplotlib"
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| Line 1: | Line 1: | ||
[[Category:Python]] | [[Category:Python]] | ||
| − | Using the pyplot functions only until now. | + | Using the [https://matplotlib.org/tutorials/introductory/pyplot.html#sphx-glr-tutorials-introductory-pyplot-py pyplot] functions only until now. |
;import matplotlib.pyplot as plt | ;import matplotlib.pyplot as plt | ||
:Get the pyplot library. We assume this is done in all examples on this page. | :Get the pyplot library. We assume this is done in all examples on this page. | ||
| + | ;plt.figure(2) | ||
| + | :Initialize a new figure. figure(1) is initialized by default. | ||
| + | ;plt.subplot(211) | ||
| + | :Create 1st subplot in figure(1) (212 is the 2nd subplot in figure(1) | ||
| + | :211 : Split the figure in 2, figure(1) subplot 1 | ||
;plt.plot(array) | ;plt.plot(array) | ||
:Create the graphical object from the values in the array. Show the graph if your environment (e.g. [https://jupyter.org/ jupyter]) supports it. | :Create the graphical object from the values in the array. Show the graph if your environment (e.g. [https://jupyter.org/ jupyter]) supports it. | ||
| + | :When you do more plots without changing figure or subplot the result will be added to the current figure. | ||
| + | ;plt.show() | ||
| + | :Show the current figure. | ||
| + | |||
Selfexplaning example code: | Selfexplaning example code: | ||
| Line 13: | Line 22: | ||
plt.ylabel('Set the y label') | plt.ylabel('Set the y label') | ||
plt.savefig('plot.png') | plt.savefig('plot.png') | ||
| + | plt.show() | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | Show | + | Show an image: |
<syntaxhighlight lang=bash> | <syntaxhighlight lang=bash> | ||
firefox plot.png | firefox plot.png | ||
Revision as of 23:52, 16 December 2018
Using the pyplot functions only until now.
- import matplotlib.pyplot as plt
- Get the pyplot library. We assume this is done in all examples on this page.
- plt.figure(2)
- Initialize a new figure. figure(1) is initialized by default.
- plt.subplot(211)
- Create 1st subplot in figure(1) (212 is the 2nd subplot in figure(1)
- 211 : Split the figure in 2, figure(1) subplot 1
- plt.plot(array)
- Create the graphical object from the values in the array. Show the graph if your environment (e.g. jupyter) supports it.
- When you do more plots without changing figure or subplot the result will be added to the current figure.
- plt.show()
- Show the current figure.
Selfexplaning example code:
plt.plot(array)
plt.suptitle('Set the graph tilte')
plt.xlabel('Set the x label')
plt.ylabel('Set the y label')
plt.savefig('plot.png')
plt.show()
Show an image:
firefox plot.png
eog plot.png
shotwell plot.png