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基于matplotlib输出心电图纸到pdf文件
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#*-- coding: utf-8 --* | |
import matplotlib | |
X_INCH = 7 | |
Y_INCH = 11 | |
X_MM = int(X_INCH*25.4) | |
Y_MM = int(Y_INCH*25.4) | |
while X_MM % 5 != 1: | |
X_MM -= 1 | |
while Y_MM % 5 != 1: | |
Y_MM -= 1 | |
M_X_INCH = float(X_MM) / 25.4 | |
M_Y_INCH = float(Y_MM) / 25.4 | |
THIN_WIDTH = 0.2 | |
FAT_WIDTH = 0.6 | |
matplotlib.use('pdf') | |
from matplotlib.backends.backend_pdf import PdfPages | |
import matplotlib.pyplot as plt | |
with PdfPages('ecg.pdf') as pdf: | |
f = plt.figure(figsize=(M_X_INCH,M_Y_INCH), dpi=600) # 英寸 | |
plt.rc('lines', linewidth=THIN_WIDTH, color='hotpink') | |
# 坐标系 | |
# axes = f.add_subplot(1,1,1) | |
axes = f.add_axes( (0, 0, 1, 1), frame_on=False ) | |
axes.set_xlim(-0.5, X_MM-0.5) # 毫米 | |
axes.set_ylim(-0.5, Y_MM-0.5) | |
def get_line_width(i): | |
if i % 5 == 0 : | |
return FAT_WIDTH | |
else: | |
return THIN_WIDTH | |
for i in range(0, X_MM): | |
axes.axvline(x=i,linewidth=get_line_width(i)) | |
for i in range(0, Y_MM): | |
axes.axhline(y=i,linewidth=get_line_width(i)) | |
pdf.savefig() | |
plt.close() |
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windows 上有报错的,注释这行解决了我的错误
#matplotlib.use('pdf')