居中标题

Question

我有下面的代码，从画廊

import numpy as np 
import matplotlib.pyplot as plt 
from matplotlib.ticker import NullFormatter 
from itertools import groupby 
import matplotlib.pyplot as plt 
import numpy 
#fig = plt.figure(figsize=(13, 12)) 

files = ("file1","file2") 
place = (1,2) 
print files 
print place 
plt.bone() 
for f in zip(files,place): 
    print "file", f 
    # would like the two below each other, don't know how, so i clear 
    plt.clf() 
    # data comes from the files normally 
    x = np.random.randn(1000) 
    y = np.random.randn(1000) 
    z = np.random.randn(100) 

    nullfmt = NullFormatter()   # no labels 

    # definitions for the axes 
    left, width = 0.1, 0.65 
    bottom, height = 0.1, 0.65 
    bottom_h = left_h = left+width+0.02 

    rect_scatter = [left, bottom, width, height] 
    rect_histx = [left, bottom_h, width, 0.2] 
    rect_histy = [left_h, bottom, 0.2, height] 

    # start with a rectangular Figure 
    plt.figure(1, figsize=(8,8)) 
    plt.xlabel('$^{13}$C (ppm)') 
    plt.ylabel('$^{15}$H (ppm)') 


    axScatter = plt.axes(rect_scatter) 
    axHistx = plt.axes(rect_histx) 
    axHisty = plt.axes(rect_histy) 

    # no labelsfor the histgrams 
    axHistx.xaxis.set_major_formatter(nullfmt) 
    axHisty.yaxis.set_major_formatter(nullfmt) 

    # the scatter plot: 
    #axScatter.scatter(x, y) 
    axScatter.scatter(numpy.float64(x),numpy.float64(y), c=numpy.float64(z),lw=0.1,s=5) 

    # now determine nice limits by hand: 
    binwidth = 0.25 
    xymax = np.max([np.max(np.fabs(x)), np.max(np.fabs(y))]) 
    lim = (int(xymax/binwidth) + 1) * binwidth 

    axScatter.set_xlim((min(x), max(x)+binwidth)) 
    axScatter.set_ylim((min(y), max(y)+binwidth)) 
    #axScatter.set_ylim((-lim, lim)) 
    binwidth = (max(x) - min(x))/20 
    bins = np.arange(min(x), max(x) + binwidth, binwidth) 
    axHistx.hist(x, bins=bins) 
    binwidth = (max(y) - min(y))/20 
    bins = np.arange(min(y), max(y) + binwidth, binwidth) 
    axHisty.hist(y, bins=bins, orientation='horizontal') 

    axHistx.set_xlim(axScatter.get_xlim()) 
    axHisty.set_ylim(axScatter.get_ylim()) 
    plt.savefig(f[0]+"out_hist.png", format='png',dpi=1200) 
    plt.savefig(f[0]+"out_hist.svg", format='svg') 

撕开此代码给我：

但是，我不知道这个框架的背景来自。而且我想让我的标题集中在情节上，而不是整个事情。最后，我不能在我的生活中以简单的JPG格式将这些情节置于彼此之下。我如何解决这些问题？

Answer 1

当您拨打plt.xlabel()时，pyplot将创建一个坐标轴，即背景坐标轴。删除两行调用plt.xlabel（）& plt.ylabel（）和后axScatter = plt.axes(rect_scatter)

axScatter.set_xlabel('$^{13}$C (ppm)') 
axScatter.set_ylabel('$^{15}$H (ppm)')  

添加以下行