Legend customization

References:

Location string	Location code
best	0
upper right	1
upper left	2
lower left	3
lower right	4
right	5
center left	6
center right	7
lower center	8
upper center	9
center	10

https://github.com/denglert/toolbox/tree/master/python/jupyter



In [1]:

    
import os
setup_script = os.path.join(os.environ['ENV_JUPYTER_SETUPS_DIR'], 'setup_sci_env_basic.py')
%run $setup_script









    



The autoreload extension is already loaded. To reload it, use:
  %reload_ext autoreload



In [2]:

    
import matplotlib.patches as mpatches
import matplotlib.lines as mlines
import matplotlib.pyplot as plt



In [3]:

    
ignore_warnings()

Custom legend markers



In [4]:

    
red_patch = mpatches.Patch(color='red', label='The red data')



In [5]:

    
blue_line = mlines.Line2D([], [], color='blue', marker='*',
                          markersize=15, label='Blue stars')



In [6]:

    
legend_handles = [red_patch, blue_line]



In [7]:

    
f,a = plt.subplots()
leg = a.legend(handles=legend_handles)
# - Note: you can also call plt.legend(..)

Legend position

Placing above



In [8]:

    
f,a = plt.subplots()
a.plot([1,2,3], label="test1")
# Place a legend above this subplot, expanding itself to
# fully use the given bounding box.
leg = a.legend(bbox_to_anchor=(0., 1.02, 1., .102), loc=3,
           ncol=2, mode="expand", borderaxespad=0.)

Placing to the right



In [9]:

    
f,a = plt.subplots()
a.plot([1,2,3], label="test1")
# Place a legend above this subplot, expanding itself to
# fully use the given bounding box.
a.legend(bbox_to_anchor=(1.05, 1), loc=2, borderaxespad=0.)









    Out[9]:





<matplotlib.legend.Legend at 0x7f8318324e48>