从文件读取的python gnuplot [英] python gnuplot read from file

问题描述

我有一个包含以下数据的文件，第一个字段是UNIXTimestamp，

i have a file with the following data the first field is UNIXTimestamp,

1351734672.095 25
1351734674.449 52
1351734676.638 612
1351734680.669 44
1351734681.121 16
1351734684.182 15
1351734684.386 17
1351734686.823 16
1351734689.807 22
1351734689.807 28

如何将x，y从此文件加载到python?

how do i load the x,y from this file to python?

#!/usr/bin/env python

from numpy import *
import Gnuplot

g = Gnuplot.Gnuplot()
g.title('My Systems Plot')
g.xlabel('Date')
g.ylabel('Value')
g('set term png')
g('set out "output.png"')
proc = open("response","r")
databuff = Gnuplot.Data(proc.read(), title="test")
g.plot(databuff)

目前这行不通...任何想法?

currently this is not working...any ideas??

更新:

#!/usr/bin/env python
from numpy import *
import Gnuplot

g = Gnuplot.Gnuplot()
g.title('My Systems Plot')
g.xlabel('Date')
g.ylabel('Response')
g('set auto x')
g('set term png')
g('set out "output.png"')
g('set timefmt "%s"')
g('set xdata time')
g('set xtic rotate by 45 scale 1 font ",2"')
g('set key noenhanced')
g('set format x "%H:%M:%S"')
g('set grid')


databuff = Gnuplot.File("repo", using='1:2',title="test")
g.plot(databuff)

xaxis上的时间值与图形重叠.任何想法?

The time values on xaxis are overlapping with the graph..any ideas??

推荐答案

使用Gnuplot.File代替Gnuplot.Data，可以得到以下曲线图:

Using Gnuplot.File instead of Gnuplot.Data, it is possible to get the following plot:

#!/usr/bin/env python

#from numpy import *
import Gnuplot

g = Gnuplot.Gnuplot()
g.title('My Systems Plot')
g.xlabel('Date')
g.ylabel('Value')
g('set term png')
g('set out "output.png"')
#proc = open("response","r")
#databuff = Gnuplot.Data(proc.read(), title="test")

databuff = Gnuplot.File("response", using='1:2',with_='line', title="test")
g.plot(databuff)

---

更新:

对于重叠，可以将45更改为-45:

For the overlap, you can change 45 to -45 :

#g('set xtic rotate by 45 scale 1 font ",2"')
g('set xtic rotate by -45 scale 1 font ",2"')

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