Matplotlib - Revision history

Hdridder: /* Installation problems */

2021-11-07T11:49:21Z

Installation problems

← Older revision		Revision as of 11:49, 7 November 2021
Line 89:		Line 89:
	\|}		\|}

	=~~Installation problems~~=		=Runtime errors=
	If you see errors like this in your uwsgi logfile (can be in deamon.log too)		If you see errors like this in your uwsgi logfile (can be in deamon.log too)
	uwsgi: Matplotlib created a temporary config/cache directory at /tmp/matplotlib-nmvqnrki because the default path (/var/www/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.		uwsgi: Matplotlib created a temporary config/cache directory at /tmp/matplotlib-nmvqnrki because the default path (/var/www/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.

Hdridder at 10:45, 7 November 2021

2021-11-07T10:45:08Z

← Older revision		Revision as of 10:45, 7 November 2021
Line 88:		Line 88:
	\| Yellow Balls		\| Yellow Balls
	\|}		\|}

			=Installation problems=
			If you see errors like this in your uwsgi logfile (can be in deamon.log too)
			uwsgi: Matplotlib created a temporary config/cache directory at /tmp/matplotlib-nmvqnrki because the default path (/var/www/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
			You can fix this by setting the MPLCONFIGDIR environment variable before you import matplotlib
			os.environ['MPLCONFIGDIR'] = '/var/tmp'
			import matplotlib

Hdridder: /* Formatting */

2021-07-21T07:39:12Z

Formatting

← Older revision		Revision as of 07:39, 21 July 2021
Line 58:		Line 58:
	'x' and 'y' are lists that specify respectively the X-axis and the Y-axis. When only a labeled list like numpy arrays or pandas Series is provided the index makes the X, the values the Y.		'x' and 'y' are lists that specify respectively the X-axis and the Y-axis. When only a labeled list like numpy arrays or pandas Series is provided the index makes the X, the values the Y.

	The next argument defines the format as <colorchar><format>		The next argument defines the format as <colorchar><format> [https://matplotlib.org/stable/gallery/lines_bars_and_markers/marker_reference.html].
	{\| class="wikitable"		{\| class="wikitable"
	\|+ Formatting strings		\|+ Formatting strings

Hdridder at 21:11, 20 February 2021

2021-02-20T21:11:01Z

← Older revision		Revision as of 21:11, 20 February 2021
Line 1:		Line 1:
	[[Category:Python]]		[[Category:Python]]
	Using the [https://matplotlib.org/tutorials/introductory/pyplot.html#sphx-glr-tutorials-introductory-pyplot-py 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.
Line 18:		Line 19:
	;plt.legend()		;plt.legend()
	:Add a legend to the plot. Default legend is the label, specify an alternative legend text as list.		:Add a legend to the plot. Default legend is the label, specify an alternative legend text as list.
			;plt.ylim(min,max)
			:Fix the y-axis (xlim for the x-axis)
	;plt.show()		;plt.show()
	:Show the current figure.		:Show the current figure.

Hdridder at 16:53, 30 October 2020

2020-10-30T16:53:09Z

← Older revision		Revision as of 16:53, 30 October 2020
Line 31:		Line 31:
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
	plt.plot(array)		plt.plot(array)
	plt.suptitle('Set the graph ~~tilte~~')		plt.title('Set the graph title')
			plt.suptitle('Set the graph super title')
	plt.xlabel('Set the x label')		plt.xlabel('Set the x label')
	plt.ylabel('Set the y label')		plt.ylabel('Set the y label')
Line 45:		Line 46:

	==Formatting==		==Formatting==
	;plt.plot		;plt.plot(x,y,format)
	:Draw lines		:Draw lines
	;plt.bar		;plt.bar(x,y,format)
	:Draw bars		:Draw bars
	;plt.scatter		;plt.scatter(x,y,format)
	:Draw points		:Draw points
	~~All above take 2~~ lists ~~at arguments, the first for~~ the X-axis~~, the second for~~ the Y-axis. When a labeled list like numpy arrays or pandas Series is provided the ~~labels make~~ the X, the values the Y.		The 'x' and 'format' arguments are optional.
			'x' and 'y' are lists that specify respectively the X-axis and the Y-axis. When only a labeled list like numpy arrays or pandas Series is provided the index makes the X, the values the Y.

	A next argument defines the format as <colorchar><format>		The next argument defines the format as <colorchar><format>
	{\| class="wikitable"		{\| class="wikitable"
	\|+ Formatting strings		\|+ Formatting strings

Hdridder at 21:32, 23 December 2018

2018-12-23T21:32:22Z

@@ Line 6: / Line 6: @@
 :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)
+:Create 1st subplot in figure(1) (212 is the 2nd subplot in figure(1). Return an 'AxesSubplot' object.
 :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. [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.
+;plt.savefig('plot.png')
+:Save the plot on file
 Selfexplaning example code:
 <syntaxhighlight lang=python>
@@ Line 21: / Line 34: @@
 plt.xlabel('Set the x label')
 plt.ylabel('Set the y label')
 plt.show()
 </syntaxhighlight>
-Show an image:
+A next argument defines the format as <colorchar><format>
-<syntaxhighlight lang=bash>
+{| class="wikitable"
-firefox plot.png
+|+ Formatting strings
-eog plot.png
+! Format
-shotwell plot.png
+! Meaning
-</syntaxhighlight>
+|-

Hdridder at 21:52, 16 December 2018

2018-12-16T21:52:22Z

← Older revision		Revision as of 21:52, 16 December 2018
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 ~~the~~ image:		Show an image:
	<syntaxhighlight lang=bash>		<syntaxhighlight lang=bash>
	firefox plot.png		firefox plot.png

Hdridder at 21:26, 15 December 2018

2018-12-15T21:26:42Z

← Older revision		Revision as of 21:26, 15 December 2018
Line 1:		Line 1:
	[[Category:Python]]		[[Category:Python]]
	~~[http://www.example.com link title]~~Using the pyplot functions only until now.		Using the 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.

Hdridder at 21:16, 15 December 2018

2018-12-15T21:16:48Z

← Older revision		Revision as of 21:16, 15 December 2018
Line 3:		Line 3:
	;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.plot(~~results~~)		;plt.plot(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.

	Selfexplaning example code:		Selfexplaning example code:
	<syntaxhighlight lang=python>		<syntaxhighlight lang=python>
			plt.plot(array)
	plt.suptitle('Set the graph tilte')		plt.suptitle('Set the graph tilte')
	plt.xlabel('Set the x label')		plt.xlabel('Set the x label')

Hdridder at 17:02, 15 December 2018

2018-12-15T17:02:26Z

← Older revision		Revision as of 17:02, 15 December 2018
Line 1:		Line 1:
	Using the pyplot functions only until now.		[[Category:Python]]
			[http://www.example.com link title]Using the 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.