我试图在网格中组织饼图,在左侧的另一列中,我在特定行的饼图上写了一些相关数据。现在我的代码是:
data = [[0.3,0.3,0.3,0.1],[0.2,0.2,0.2,0.4],[0.1,0.1,0.4,0.4]]
def main():
createPieCharts(data)
return 0
def createPieCharts(data,piecharts_fname="piecharts"):
""" """
import datetime
from matplotlib.backends.backend_pdf import PdfPages
import matplotlib.pyplot as plt
areas = ['Arava','Lotz','Paran','Ramon']
thresholds = [0.0,0.01,0.02]
num_columns = len(areas)
num_rows = len(thresholds)
with PdfPages(piecharts_fname+'.pdf') as pdf:
fig, ax = plt.subplots(num_rows,num_columns)
# fig.suptitle('Raining Hogs and Dogs', bbox={'facecolor':'0.8', 'pad':5})
labels = ['Frogs', 'Hogs', 'Dogs', 'Logs']
for i,threshold in enumerate(thresholds):
fracs = data[i]
for j,area in enumerate(areas):
ax[i,j].set_title(area)
ax[i,j].pie(fracs, labels=labels,
autopct='%1.1f%%', shadow=True, startangle=90)
ax[i,j].set_aspect('equal')
plt.tight_layout(pad=0.4, w_pad=0.5, h_pad=1.0)
pdf.savefig(fig)
plt.close()
# Adding metadata for PDF file
d = pdf.infodict()
d['Title'] = 'Pie charts'
d['CreationDate'] = datetime.datetime.today()
if __name__ == '__main__':
main()
聪明的做法是什么?
最佳答案
添加一个额外的列,并将您的文本放在那里。
然后您只需关闭左列 (ax.set_axis_off()
) 中轴的轴线和刻度,然后使用 ax.text
添加文本标签。
请注意,对于绘制饼图的其他轴,您还需要将 j 索引加 1。
这是您脚本中的函数,已修改:
def createPieCharts(data,piecharts_fname="piecharts"):
""" """
import datetime
from matplotlib.backends.backend_pdf import PdfPages
import matplotlib.pyplot as plt
areas = ['Arava','Lotz','Paran','Ramon']
thresholds = [0.0,0.01,0.02]
num_columns = len(areas) + 1 # Add extra column for text
num_rows = len(thresholds)
with PdfPages(piecharts_fname+'.pdf') as pdf:
fig, ax = plt.subplots(num_rows,num_columns)
# fig.suptitle('Raining Hogs and Dogs', bbox={'facecolor':'0.8', 'pad':5})
labels = ['Frogs', 'Hogs', 'Dogs', 'Logs']
for i,threshold in enumerate(thresholds):
fracs = data[i]
ax[i,0].set_axis_off() # Turn off axes & ticks
ax[i,0].text(0.5,0.5,threshold,ha='center',va='center') # Add text
for j,area in enumerate(areas):
ax[i,j+1].set_title(area) # Add 1 to j index
ax[i,j+1].pie(fracs, labels=labels, # Add 1 to j index
autopct='%1.1f%%', shadow=True, startangle=90)
ax[i,j+1].set_aspect('equal') # Add 1 to j index
plt.tight_layout(pad=0.4, w_pad=0.5, h_pad=1.0)
pdf.savefig(fig)
plt.close()
# Adding metadata for PDF file
d = pdf.infodict()
d['Title'] = 'Pie charts'
d['CreationDate'] = datetime.datetime.today()
关于python - Matplotlib - 在网格中放置饼图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37653943/