Python日期时间到Matlab datenum

Question

你如何将Python转换datetime为Matlab datetnum？

Answer 1

要将datetime序列化为字符串,可以在Python端使用strftime:

import datetime
d = datetime.datetime.now()
print (d.strftime("%d-%b-%Y %H:%M:%S"))

根据MatLab文档, datenum知道如何解析它.

Answer 2

基于bavaza的答案 - 现在包括微秒:

def datetime2matlabdn(dt):
   mdn = dt + timedelta(days = 366)
   frac_seconds = (dt-datetime.datetime(dt.year,dt.month,dt.day,0,0,0)).seconds / (24.0 * 60.0 * 60.0)
   frac_microseconds = dt.microsecond / (24.0 * 60.0 * 60.0 * 1000000.0)
   return mdn.toordinal() + frac_seconds + frac_microseconds

Answer 3

扭转了在这里所做的事情,我得到了:

def datetime2matlabdn(dt):
   ord = dt.toordinal()
   mdn = dt + timedelta(days = 366)
   frac = (dt-datetime(dt.year,dt.month,dt.day,0,0,0)).seconds / (24.0 * 60.0 * 60.0)
   return mdn.toordinal() + frac

也应该合作timedelta.microseconds.

在IDLE:

n = datetime.now()

datetime.datetime(2012,2,13,6,56,2,619000)

datetime2matlabdn(n)的

734912.28891203704

在Matlab中:

>> datestr(734912.28891203704)

ans = 13-Feb-2012 06:56:02