python画坐标轴_python画图纵坐标

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简单的可以这样，2113举个例子，数据就5261直接用图片中的一部分：from pylab import *

from datetime import datetime

data_str = """2016-06-15_16:25 99.7324

2016-06-15_17:25 99.7323

2016-06-15_18:25 99.7322

2016-06-15_19:25 99.7349

2016-06-15_20:25 99.7207"""

lines = data_str.split('\n')

X_labels = []

X = []

Y = []

for line in lines:

xy = line.split()

X_labels.append(xy[0])

X.append(datetime.strptime(xy[0], "%Y-%m-%d_%H:%M"))

Y.append(float(xy[1]))

figure(figsize=(8, 6))

plot(X, Y, 'b.-')

grid(True)

xticks(X, X_labels, rotation=90)

subplots_adjust(bottom=0.35)

savefig('graph.png')

show()

画出来效果如上所示。4102

数据多了1653的时候有些参数要自己调整一下。