Ive got a lot of images of galaxies through different filters. each line of subplots represents a new object with a unique 'ID'. Im plotting all of these images using the subplot function but am having trouble adding the ID name. Ideally the ID would stretch in front of several subplots but at the moment it is placed behind (see picture). Does anyone know of a way to fix this?
plt.close('all')
ID=np.array([])
cata=csv.reader(open('final_final_list.csv',"rU"))
for x in cata:
ID=np.append(ID,x[0])
filterset=['ugr','i1','z','Y','J','H','Ks']
test2=np.array([])
for i in range(0,len(ID)):
for j in range(0,len(filterset)):
test2=np.append(test2,'filt_image/'+ID[i]+'/'+filterset[j]+'.png')
ID2=np.repeat(ID,7)
filterset2=filterset*64
array=np.arange(0,140,7)
plt.figure()
for i in range(0,140):
plt.subplot(20,7,i+1)
plots=img.imread(test2[i])
plt.imshow(plots)
plt.axis('off')
plt.text(0,100,filterset2[i],fontsize='10')
for i in array:
plt.subplot(20,7,i+1)
plt.annotate(ID2[i],xy=(0,300),xytext=(0,300),fontsize='10')
plt.show()
每次在图中创建子图时，关联的 Axes 对象都会附加到幕后的列表中。默认情况下，轴按照添加到该列表的顺序绘制，即创建子图的顺序。在您的示例中，第一列中的每个图都紧邻第二列中的相邻图添加，因此最终后者会绘制在前者之上。
幸运的是，Matplotlib 有一个zorder属性使您可以控制事物的绘制顺序。在这种情况下，您需要将第一列中所有轴的 zorder 设置为大于默认值的任何整数0（较高的值稍后绘制/高于较低的值）。以下是底行已调整但顶行未调整的示例：
#!/usr/bin/env python
import matplotlib.pyplot as plt
import numpy as np
Z = np.random.random((5,5))
txt = "abcdefghijlkmopqrstuvwxyz" * 2
F, A = plt.subplots(ncols=2,nrows=2)
for ax in A.flat:
ax.imshow(Z,interpolation="nearest")
ax.axis("off")
for ax in A[:,0].flat:
ax.text(0,0,txt)
# Uncomment the next line to adjust all plots in column one.
# ax.set_zorder(1)
# The next line just adjusts one plot, as an example.
A[1,0].set_zorder(1)
plt.show()
