from __future__ import print_function, division, absolute_import
from pylab import *
import time
import matplotlib.backends
import matplotlib.pyplot as p
import os.path
def is_backend_module(fname):
"""Identifies if a filename is a matplotlib backend module"""
return fname.startswith('backend_') and fname.endswith('.py')
def backend_fname_formatter(fname):
"""Removes the extension of the given filename, then takes away the leading 'backend_'."""
return os.path.splitext(fname)[0][8:]
# get the directory where the backends live
backends_dir = os.path.dirname(matplotlib.backends.__file__)
# filter all files in that directory to identify all files which provide a backend
backend_fnames = filter(is_backend_module, os.listdir(backends_dir))
backends = [backend_fname_formatter(fname) for fname in backend_fnames]
print("supported backends: \t" + str(backends))
# validate backends
backends_valid = []
for b in backends:
try:
p.switch_backend(b)
backends_valid += [b]
except:
continue
print("valid backends: \t" + str(backends_valid))
# try backends performance
for b in backends_valid:
ion()
try:
p.switch_backend(b)
clf()
tstart = time.time() # for profiling
x = arange(0,2*pi,0.01) # x-array
line, = plot(x,sin(x))
for i in arange(1,200):
line.set_ydata(sin(x+i/10.0)) # update the data
draw() # redraw the canvas
print(b + ' FPS: \t' , 200/(time.time()-tstart))
ioff()
except:
print(b + " error :(")
import matplotlib.backends
import os.path
def is_backend_module(fname):
"""Identifies if a filename is a matplotlib backend module"""
return fname.startswith('backend_') and fname.endswith('.py')
def backend_fname_formatter(fname):
"""Removes the extension of the given filename, then takes away the leading 'backend_'."""
return os.path.splitext(fname)[0][8:]
# get the directory where the backends live
backends_dir = os.path.dirname(matplotlib.backends.__file__)
# filter all files in that directory to identify all files which provide a backend
backend_fnames = filter(is_backend_module, os.listdir(backends_dir))
backends = [backend_fname_formatter(fname) for fname in backend_fnames]
print backends
下面是对之前发布的脚本的修改。它查找所有支持的后端,验证它们并测量它们的fps。在OSX上,当谈到tkAgg时,它会使python崩溃,因此使用它的风险由您自己承担;)
您可以访问列表
第三个是前两个的连接。如果我正确地阅读了源代码,那么这些列表是硬编码的,并且不会告诉您哪些后端实际上是可用的。还有
但这也只是对照硬编码列表。
有Sven提到的硬编码列表,但是要查找Matplotlib可以使用的每个后端(基于当前设置后端的实现),可以检查Matplotlib/backends文件夹。
以下代码执行此操作:
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